Introduction

     G-NetTrack Pro is a wireless network monitor and drive test tool for Android OS devices. It allows monitoring and logging of mobile network parameters without using specialized equipment. It's a tool and it's a toy. It can be used by professionals to get better insight on the network or by radio enthusiasts to learn more about wireless networks. It can be used even if you want just to make easy representation of your traveled route.

Here is a video demonstration of G-NetTrack Pro
   Using application you can easily pinpoint network problems like:
- bad coverage - low RXLEVEL
- low uplink and downlink data throughput
- lack of dominant server causing lot of cell reselections and frequent service interruptions - when the serving cell time is small
- weak 3G coverage - when you have a lot of reselections between cells on 3G and 2G
- blocked calls
- dropped calls

    The main features of G-NetTrack Pro are:
- measuring of wireless network parameters
- logging of measured values in text and kml files
- displaying measured values on map view
- displaying base stations and serving cell line on map view

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New things in G-NetTrack Pro compared to G-NetTrack:
- INDOOR measurements
- AUTO INDOOR mode
- Floorplans loading
- New 3D map - different type of maps, 3D buildings, autocacheing
- LTE serving and neighbor cells measurements
- SMS test sequence for monitoring SMS successful sending and delivering
- Screen orientation change (portrait/landscape)
- and many more features and fixes
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The measured data by G-NetTrack can be analyzed with the help of other tools available here on this site as G-NetDiag and G-NetEarth.

This manual describes the information available, the settings and the actions that can be done using G-NetTrack.

Tabs

There are five tabs with different information - CELL, NEI, MAP, INFO and DRIVE. The information displayed on each tab is

2.1 CELL Tab

CELL tab shows network and geographical information. It also shows history log of the serving cells. The shown information is:

- Operator - the name of your wireless provider
- MCC - Mobile Country Code - it is a 3 digit code specific for each country
- MNC - Mobile Network Code - it is 2 or 3 digits code and is specific for each operator in the country
- LAC - location area code - the network is split by location areas, in which the subscriber is paged in all cells simultaneously. LAC is the code of the current area
- RNC - Radio Network Controller - when on 3G it shows the ID of the RNC that controlls the current serving cell
- CELLID - the ID of the current serving cell
- Type - the network technology mode (like GPRS, EDGE on 2G or UMTS, HSPA etc... on 3G)
- LEVEL - the current signal strength in dBm. For different technologies the caption is different - RXLEV for 2G, RSCP for 3G and RSRP for 4G.
- QUAL - the signal quality of the network. For different technologies the caption is different - RXQUAL for 2G, ECNO for 3G and RSRQ for 4G. This value is not reported by most phones. Only several phones report ECNO and maybe no phone reports RXQUAL.
- SNR - signal to noise ratio. It is measured on LTE only.
- CQI - channel quality indicator. It is measured on 4G only.

- Longitude - current location longitude in decimal format
- Latitude - current location latitude in decimal format
- Speed - current speed in kmph.
- Accuracy - the accuracy with which the location is determined. Location determination could be based on GPS or Network (using Google location service - using serving and neighbor cells or WiFi networks)
- Height - the difference between Altitude and Ground values
- Altitude - the GPS measured altitude
- Height - the ground level height - this is ajustable in settings.

- UL - the current uplink data transfer speed in kbps
- DL - the current downlink data transfer speed in kbps
- Data - the used data network - Mobile Network or WiFi
- Phone State - IDLE, CALL, DATA - the current phone state - if it is idle or in active data transfer or in active voice call

- Serving Time - the current serving cell time in seconds. If cellfile is used this line also shows the serving cell name and cell layer.
- Serving cell history table - this table shows history log of serving cell changes with time of the change and level at which this change happened. The table also shows cell serving time which is useful for spotting frequent cell reselection and lack of dominant cells. Also here it is possible to see loss of network coverage - rows with level values equal to -201.

2.2 NEI Tab

NEI tab shows information about neighbor cells measurements. It consists of two tables:
- Serving cell table - shows information about current serving cell id and level. when on 3G CELLID column will show RNC-CELLID and PSC (Primary Scrambling Code) if the phone reports it.
- Neighbor cells table - shows information about the current neighbor cells and their levels. When on 2G the neighbors are shown as LAC and CELLID. When on 3G they are shown as PSC

The neighbor cells information is not reported by all phones. Check phone measurement capabilities for more information.

At the bottom of the NEI tab is area with links to other available tools on this site.

2.3 MAP tab

MAP tab shows geographical view of hte measurements and mobile network basestations.
In the first row there is information about current technology, cell layer, MCC-MNC-LAC-RNC-CELLID of the current serving cell, level and quality measurements.
On the second row there is information about the distance to serving cell and bearing to it. This information is available only if cellfile with networks cell information is loaded. On this row also is information about the GPS - if it has fix (green color) or not (red color).
The map shows the surrounding area view and thematic map of selected measurement (LEVEL, QUAL, CELL, DL bitrate, UL bitrate, SPEED).
There are four buttons available:
- first button is for changing the thematic map measurement
- "Export" button - exports the current thematic map of the selected measurements in kml format. This is useful for on the fly recording of measurement if the logging function has not been turned on.
- "Screenshot" button - saves the snapshot of the current view - useful for on the fly saving of image representation of the measurements.
- "Clear" button - clears the view - if there are a lot of points, it can slow the map view and then is good to clear the view.

2.4 INFO tab

The INFO tab provides following information:
- Log Status - shows if the log recording has been started or not
- IMSI - SIM card Inernational Mobile Subscriber Identity - this is useful for providing information in order different traces to be performed by Network Operator.
- IMEI - this is hardware ID of the mobile phone
- Current Operator - name of the current serving operator
- Current Country - the country of the used mobile provider
- Home Operator - name of your operator
- Home Country - country of the Home Operator
- Is Roaming - if the mobile is in roaming or not
- MSISDN - your phone number
- SD Card - if sd card storage is available
- App folder - the used root folder for exported files - the folder where G-NetTracl_Logs folder stays
- Cellfile - the loaded cellfile name
- G-NetTrack version - current version of the app
- G-NetTrack code - number representation of the current app verson
- Android SDK - the Android OS version number
- Device - device name
- Brand - device brand
- Device Manufacturer - manufacturer of the device
- Build Number - device software build
- Network Type Num - network type number - determines the current network mode (GSM, HSDPA, CDMA etc...). If your phone shows 0 (unknown) in idle or connected mode, check [Discard Network Type 0] in Settings in order to report correctly the level

- Sequence Status - status of voice/data sequence
- Voice Calls - number of voice calls performed in Voice Sequence
- Successfull Calls - number of successfully started and finished calls made in Voice Sequence
- Blocked Calls - number of blocked calls in voice sequence
- Dropped Calls - number of dropped calls that occur in Voice Sequence

2.5 DRIVE tab

DRIVE tab represent the main serving cells information in comfortable format with big font letters


Settings

Settings are activated via Menu - Settings. There are several group of settings, which are related to different app features:

MAP Settings

- Map Satellite View - switches satellite/street view of the map
- Map in background - when active the GPS stays on while the app is in the background when the log is not started
- Auto center map - switches on/off automatic centering of the map around current location
- Auto rotate map - switches on/off automatic rotation of the map
- Speed in km/h - when checked the speed is shown in kilometers per hour. Uncheck it to show speed in miles per hour.
- Point Size - size of the point on map view
- Serving Cell Font Size - font size of the serving cell on Map view
- Cells Font Size - font size of the cells on Map view
- Serving Cell Thickness - thickness of the serving cell on Map view
- Cells Thickness - thickness of the cells on Map view
- 2G cell layers colors - colors in RRGGBB format for 2G layers (default 4 layers). Modify the colors or add new layers via adding "," and new layer color
- 3G cell layers colors - colors in RRGGBB format for 3G layers (default 4 layers). Modify the colors or add new layers via adding "," and new layer color
- 4G cell layers colors - colors in RRGGBB format for 4G layers (default 4 layers). Modify the colors or add new layers via adding "," and new layer color
- Ground Level - sets the ground level altitude. When set different than 0 Height in CELL tab shows the height above this ground/street level
- Neighbor Cell Line Thickness - thickness of neighbor cell lines
- Neighbor Cell Line Color - color in RRGGBB of neighbor cell line
- Log reduction factor - when this value (N) is bigger than 1 then every N-th measurements is shown on map. This does not impact the logfile

SITES Settings

- Show Sites - requires cellfile. When it is on the list of cells from cellfile will be loaded at the program start. Requires restart of the app.
- Show Serving Line - shows a line between current location and srving cell location
- Show Cell Names - shows cell names in map view
- Show dots for cells - checking this will draw dots instead lines for cells which improves map performance
- Max visualized cells - This is the max number of cells that will be visualized from all cells that are loaded in memory. If you want to increase this number you can use the two features below to achieve better map performance
- Visualize only sites in range - loads all the cells, but visualize only sites in specified range - usefull when the cellfile is big and the map view is slowed down because the big number of cells
- Auto refresh sites in range - the surrounding sites will be refreshed on location change when [Visualize only sites in range] is selected.
- Range of loaded sites - range in meters around current location of sites to be loaded
- Add unknown cells - when this option is on the new cells are automatically added to cellfile. If you have no cellfile and both [Show Sites] and [Add unknown cells] are on, the app will create new cellfile and when the log is on it will start filling it with new cells.
- Show neighbor cells names - when checked the neighbor cell name, distance and bearing will be shown on Neighbors table (requires 3G PSC/ 4G PCI info in cellfile)
- Show neighbor cells lines - when checked the neighbor cell lines will be visualized on map (requires 3G PSC/4G PCI info in cellfile)

INDOOR Settings

- Indoor Mode - Switches Indoor mode On/Off
- Buffer Size - Max number of measurement samples in buffer during Indoor mode
- Auto Indoor Mode - Switches Auto Indoor mode On/Off
- Auto Indoor Accuracy threshold - when GPS accuracy is bigger than this value GPS fix is considered not valid and Auto Indoor mode is started
- Auto Indoor Time threshold - when last GPS fix was more seconds ago than this value - the GPS fix is considered not valid and Auto Indoor mode is started
- Set point in Auto Indoor mode - when On the tool for setting points in indoor mode is shown and points on the route can be set

How to use indoor mode:
Here is a video demonstration of INDOOR mode with G-NetTrack Pro
Here is a video demonstration of subway measurements in INDOOR mode with G-NetTrack Pro

1. Go to Settings and activate INDOOR MODE
2. On Map the button [Set Point] and center point will appear
3. Point your current location on the map center and press [Set Point] - a marker will appear on the map
4. Move to the next point. Center map on it and press [Set Point] - several new markers (one for each second) will appear connecting previous and current location
5. Go through the route putting points when you change direction.
6. You can clear the markers using [CLR] button


AUTO INDOOR mode allows auto filling of measurement points when the GPS fix is not available like in tunnels or on places with bad GPS reception.
When GPS fix is lost the measurements are collected in a buffer and when the GPS fix is back again the missing measurements are filled on a straight line connecting the point of loss and regaining GPS fix.
Alternatively you can use the point set tool to set intermediate points if the route is not straight line - [Settings] - [Set Point in auto indoor mode].

Here is a video demonstration of tunnel measurements in AUTO INDOOR mode with G-NetTrack Pro

AUTO INDOOR mode works only when the log is active.
If INDOOR mode is selected AUTO INDOOR mode is not activated.

How to use it:
1. Enable AUTO INDOOR mode in Settings.
2. Choose threshold for GPS validity
- Accuracy - if the GPS accuracy is bigger than this threshold the GPS is considered not valid
- Time - if the last good GPS fix was received before the specified value (in seconds) - the GSP is considered not valid.
When log is active both current values are visible on the upper right corner of MAP tab next to GPS writing. When one of the conditions is satisfied the GPS fix is considered not valid and values are colored in blue.

3. Start log.
4. When you enter the tunnel and lose GPS fix the GPS writing on upper right corner of MAP tab will color in blue which means that AUTO INDOOR mode is active and measurements are collected. In order measurements to be more precise you can wait a little until GPS fix is lost at the beginning of the tunnel and the entering point is auto set.

5. When you go out of the tunnel and GPS fix is valid the values for GPS accuracy and time are colored in green, the exiting point is auto set and the missing measurements between entering and exiting point are shown on the map and filled in the log.

VOICE SEQUENCE Settings

Here is a video demonstration of VOICE SEQUENCE with G-NetTrack Pro
VOICE SEQUENCE allows automatic generation of voice calls to specified number with specified duration and pause between the calls. When Voice Sequence is active the number of successful, blocked and dropped calls are shown in INFO tab
- Called Nmber - the number to be dialed
- Number of Calls - number of calls to be made
- Call Duration - duration of a single call
- Pause Between Calls - pause between the calls
- Start calls only on - allows starting of calls only on specific technology (2G, 3G, 4G) - useful for example when you want to test 3G coverage only. If the call has been handovered to 2G the sequence will wait until 3G is reselected again and then will continue

DATA SEQUENCE Settings

Here is a video demonstration of DATA SEQUENCE with G-NetTrack Pro
DATA SEQUENCE allows test of data transfer.
- Ping - include PING in data sequence
- Ping URL - the URL for ping test. The format is like www.xxxxxxxxxxxxxx.com or 10.100.1.101
- Upload - include UPLOAD in data sequence
- Upload URL - the URL for upload test. The format should start with http:// and is like
- Upload time, s - time for upload in seconds.
http://www.xxxxxxxxxxx.com.
- Download - include DOWNLOAD in data sequence
- Download URL - the URL for ping test. The format should start with http:// and is like http://www.xxxxxxxxxxx.com/downloadedfile.mp3. It is recommended to set bigger file in order to achieve bigger download speed.
- Download time, s - time for download in seconds.
- Pause between tests - pause between test cycles
- Log bitrates only during data test - when this is checked current DL and UL bitrates will be logged only when data sequence is active. Useful when you want to view easily the maximum available bitrates
- Multithread - when checked multiple simultaneous connections will be used for upload and download in Data Test and Data Sequence. Using several threads increases the bitrates.
- Number of threads - the number of threads to be used ([Multithread] should be checked). Set number of simultaneous threads more than 1 and less or equal to number of phone CPU.

SMS SEQUENCE Settings

Here is a video demonstration of SMS SEQUENCE with G-NetTrack Pro
SMS SEQUENCE allows test of SMS sending and delivery.
- Number of SMS - numbers of SMS that are sent
- SMS recipient - MSISDN of recipient to whom the SMSs are sent
- SMS text - text of SMS message
- Pause between SMS - pause (seconds) between SMS messages

MIXED SEQUENCE Settings

Here is a video demonstration of MIXED SEQUENCE with G-NetTrack Pro
Mixed sequence allows including multiple types of test - data/voice/SMS in a test sequence. The settings for each type of test is taken from respective sequence settings.
- Data Test - include data test in sequence.
- Voice Test - include data voice in sequence.
- SMS Test - include SMS test in sequence.
- Test Pause - pause between test cycles.
- Number of cycles - number of mixed sequence cycles.

KML EXPORT Settings

Here are the settings for enabling different measurements export while log is started. When activated a kml for specified measurement will be generated in the export file folder for each log in the G-NetTrack_Logs folder on your main storage.
The following measurement exports are available:
- CELLID
- LEVEL
- QUAL
- TECHNOLOGY - 2G/3G/4G
- TECHNOLOGY MODE - GPRS/EDGE/HSPA etc...
- EVENTS - cell reselections and voice sequence events like call start, call end, blocked call and dropped call (CR - Cell Reselection, HV - Voice handover, HD - Data handover)
- DL_BITRATE - downlink data transfer bitrate
- UL_BITRATE - uplink data transfer bitrate
- LAC
- RNC
- LAYER - Cell layer information - if available in cellfile
- SNR
- CQI
- LTE RSSI
- SPEED - the speed of movement
- PSC - UMTS primary scrambling code of the serving cell
- NEIGHBOR CELLS - separate file for cellid and level for each of the first 6 neighbor cells measured
- CELLFIND - when active this will activate a CELLFIND feature which shows the serving cell location determined by Google location service, based on the cellid measurements. In order this feature to be available you must have mobile network data connection on. Turn your WiFi off in order to prevent location determination based on WiFi networks. In kml file there is information about the cell location and accuracy. It can help to gain insight on cell size (bigger when accuracy is greater number) and location.
- DATA TEST - 4 kml files for DATA SEQUENCE statistics - average ping, ping loss, upload bitrate and download bitrate
- Use height in kml - when this is on, the points in the kml file will use altitude information. Make sure you adjust Ground Level in Settings - Map in order Height (over ground level) to be correct.

- KML height mode - sets how height is used in kml files. When [Relative to ground] is selected Height (over ground) is used in kml and when [Absolute] - Altitude (over sea level) is used. If area of measurement is relatively flat and ground level does not change much - [Relative to ground] is recommended and if not - [Absolute] is recomended.
    If [Relative to ground] is selected make sure you adjusted [Settings - Map - Ground Level], so Height shows correct values since they will be used in kml file. If this mode is used the easiest way is to check what Altitude shows when the phone is on ground level and put this value in [Settings - Map - Ground Level]. Then the Height will show 0 on ground level. Barometer is used does not need to be calibrated in this case.
    If [Absolute] is selected and barometer is used for height detemination make sure you set [Settings - Barometer - Barometer height correction], so Altitude shows correct values, since they will be used in kml file. The easiest way to calibrate the barometer in this case is to determine from Google Earth the altitude for your location and adjust [Settings - Barometer - Barometer height correction] so Altitude(B) shows Google Earth value.

- Use short kml format - reduces the kml size showing only the respective measurement in the information baloon.
- KML Point Size - size of kml dot in kml export file.
- Application folder - set the root folder for export files. The folder must exist, otherwise the default folder is used. Check the [App folder] in INFO tab in order to see if the correct folder was chosen. If you want to use external SD card you have to put "/sdcardname" - check with some file manager the name of your external SD card.

CELLHUNTER Settings

- CELLHUNTER Mode - this switches on/off CELLHUNTER mode. Cellfile is required for this feature. When it is on only unknown cells (that are missing in cellfile) will be written in the text and kml log files. This feature is useful for Cell Hunters when they search for new cells in th area.
- CELLFILTER Mode - this switches on/off CELLFILTER mode. Cellfile is required for this feature. When it is on only known cells (that are in cellfile) will be written in the text and kml log files. This feature is useful for logging only data for specific cell.

LEVEL Thresholds Settings

Specifies the level thresholds settings for LEVEL kml export.

LEVEL Colors Settings

Specifies the level colors settings for LEVEL kml export.

G-NETWORLD Settings

- Send Measurements Online - allows sending of measurements in real time to G-NetWorld service. When activated the phone will send data when logging is started to G-NetWorld where you can share your measurement with other users around the world.

LOG PARAMETERS Settings

- Time Interval - the interval in seconds between writing record in the log if the location is not changed or cellid is not changed - default 300s, lower values will allow more frequent recording of fluctuations, higher values will make log files smaller and save battery
- Distance Interval - the distance interval in meters between writing record in the log when the position is changed - default value 15m, lower values will increase point density, but will use more battery
- GPS refresh time interval - time interval between GPS updates

AUTOMATION Settings

- Auto log on app start - auto start logging when the app is started
- Auto VOICE SEQUENCE - auto start VOICE SEQUENCE on app start
- Auto DATA SEQUENCE - auto start DATA SEQUENCE on app start
- Auto start app on boot - auto start app on phone boot

ROUTE Settings

- Route color - color of the route
- Route size - point size of route
- Show direction - draw direction on route
- Route reduction factor - when this value N is bigger than 1 every Nth point of the route is shown on map

CALIBRATION Settings

- Discard Network Type 0/99 - Check this if your phone reports network type 0 or 99 and as a result the level is -200. Check current network type number on bottom of INFO tab.
- Network type 0/99 - casts network type 0 or 99 as what is chosen.
- Use old functions for serving cell - if YES then serving cell parameters are not based on new API17 functions. Use it if your phone does not support API17 functions.
- Use old functions for neighbors - if YES then neighbor cells parameters are not based on new API17 functions. Use it if your phone does not support API17 functions.
- Calibrate 2G/3G - select it to do calibration of levels for 2G/3G. When calibration is done this will be unchecked automatically. Works only when API17 functions are used.
- 2G/3G factor - calibration factor for 2G/3G. Works only when API17 functions are used.
- Calibrate 4G - select it to do calibration of levels for 4G. When calibration is done this will be unchecked automatically. Works only when API17 functions are used.
- 4G factor - calibration factor for 4G. Works only when API17 functions are used.
- Use new functions for SNR - if YES the LTE SNR will be read from API17 functions if available.
- SNR factor - calibration factor for LTE SNR. Usually is 1, but for some devices should be set to 10. Works only when API17 functions are used.
- Force updates - if your phone does not automatically update serving cell and level you can force them to do so.

SMS CONTROL

SMS control allows remote control of the app via SMS. The sender of SMS can be controlled via 'Authorized Senders' setting. The app returns confirmation to the sender via SMS.
- SMS control - allows SMS control (requires restart of the app)
- Authorized senders - phone numbers of people authorized to control the app via SMS
- Start logging code - SMS content for starting logging
- End logging code - SMS content for stop logging
- Start data sequence code - SMS content for starting data sequence
- Stop data sequence code - SMS content for stop data sequence
- Start voice sequence code - SMS content for starting voice sequence
- Stop voice sequence code - SMS content for stop voice sequence
- Start SMS sequence code - SMS content for starting SMS sequence
- Stop SMS sequence code - SMS content for stop data SMS
- Info code - SMS content for requesting phone to send via SMS immediately his current measurements information. When the phone receives this code it replies with SMS with its current measurements.

BAROMETER Settings

If the phone has barometer sensor it can be used to determine height instead of GPS. The barometer sensor has better height accuracy than GPS. Using barometer you can do more accurate height measurement. Using this and setting [Settings - KML Export - Use height in kml] allows you to view height profile of kml logs in Google Earth.

- Use barometer for height - app has to be restarted when this is allowed. If checked height will be determined from barometer sensor instead of GPS and you will see (B) next to Altitude on CELL tab.
- Barometer height correction - this value is added to barometer height in order to correct the height value. This value has to be often corrected since the altitude dependence of air pressure depends on many factors.
- Height change threshold logging - the change of height with this value will generate new record in logfile.

OTHER Settings

- Screen orientation - sets the screen orientation
- Show events - shows messages for events like reselection handover etc.
- Show PSC/PCI on DRIVE tab - shows PSC (3G) and PCI (LTE) on DRIVE tab.
- DRIVE tab text size - sets font size on DRIVE tab.
- Filter NODE-CELLID list - filters out specific NODE-CELLID combination from the log - useful when some phone reports sporadic fake cellids. You can put several cells comma separated (NODE1-CELLID1,NODE2-CELLID2)
- Auto screen on - while the log is active if the screen is turned off incidentally (with POWER button) it will be turned automatically on again. This has to be on if your phone does not support new API17 functions. If your phone supports API17 then your screen can be off while logging.

Actions

Start Log

Starts the logging. During this the text and kml export files are created in G-NetTrack_Logs folder on main phone storage. The measurements kml files that are created can be selected in Settings. A record is put in log on change of position with specified distance interval, change of cellid or each specified time interval if there is no change of position or celld. Time and distance intervals can be set in Settings.
When the logging is activated the app will lock your GPS and screen on and the screen will remain lit during the logging. In order not to interrupt logging you have to not switch the device screen off. The phone could be locked, but the screen should be on.

Pause Log

Pauses the log.

Resume Log

Resumes the log.

End Log

Finishes the log.

Add Filemark

Adds the filemark (note) to the file. The filemarks are visible in text logfile and filemarkers.kml file.

Settings

Opens the settings page.

Exit

Exits the app.

Start Voice Sequence

Here is a video demonstration of VOICE SEQUENCE with G-NetTrack Pro
Starts the Voice Sequence with which you can make automatic voice calls with specified duration and pause. During this sequence the number of successful, blocked and dopped calls are dispalyed in INFO tab.

Start Data Sequence

Here is a video demonstration of DATA SEQUENCE with G-NetTrack Pro
Starts automatic data transfer sequence. It includes:
- 10 seconds ping
- 10 seconds upload
- 10 seconds download
- pause (specified in Settings)

Note: If your Android version is 2.2 or earlier then the upload is until at least 128kB file is uploaded.

How to use:
1. Input the ping, upload and download URL in Settings.
2. Check DATA TEST in kml export settings to export statistics in kml
3. Start Data Sequence from Menu.
4. Observe the stats on INFO tab

The statistics are:
- average ping
- min ping
- max ping
- ping standard deviation
- ping loss
- upload bitrate
- download bitrate
The statistics are exported in text logfile and in kml files if option DATA TEST is selected in kml export settings.

Data Test

Starts data test. It includes:
- 10 seconds ping
- 10 seconds upload
- 10 seconds download

Note: If your Android version is 2.2 or earlier then the upload is until at least 128kB file is uploaded.

How to use:
1. Input the ping, upload and download URL in Settings.
2. Select Menu - More - Data Test

Start SMS sequence

Here is a video demonstration of SMS SEQUENCE with G-NetTrack Pro
Starts SMS sequence. It sends predefined number of SMS and tracks its success.

Export Cellfile to kml

Exports cellfile to kml, which can be opened with Google Earth. The exported file is in folder \cellfile

Disable Map and GPS

Disables the map view. Then the map view won't be updated

Enable Map and GPS

Enables the map view. This allows zooming and moving the map view.

G-NetDiag

Opens G-NetDiag page where you can analyze your text log files.

G-NetWorld

Opens G-NetWorld page, where you can share and view measurements made by other G-NetTrack users around the world.

Upload file to G-NetWorld

Opens G-NetWorld file upload page, where you can upload text log files to G-NetWorld service.

Measurement Capabilities

Opens Phone Measurements Capabilities page, where you can view different phone brands and models reporting capabilities.

Export Settings

Export settings to text file, which can be loaded again. The exported file is in ht e app folder

Import Settings

Imports settings from previously exported settings file

Load Cells

Load cells from cellfile. If cells are already loaded it will reload them from cellfile.

Redraw Cells

Redraws cells. Use this to manually redraw cells when using option to visualize only surrounding cell and auto refresh of cells is not on.

Load Route

Loads a route from logfiles. Put the logfiles in folder [route] in app folder. Also text file with column headers "Longitude" and "Latitude" can be used. This will help when you want to follow predefined route.

Load Floorplan

Loads floorplan image for indoor measurements. For details how to prepare floorplan see Floorplan section.

facebook page

Opens G-NetTrack facebook page, where you can communicate with other G-NetTrack users.

About

Opens G-NetTrack web page

Cellfile

If you have cell information you can create a cellfile and view the sites on the map. In order to do this create cellfile and put it into folder G_NetTrack_Logs/cellfile. Two types of cellfiles can be used:
The cellfile format is tab delimited text file with following columns:
- tab delimited text cellfile
- clf file
Recommended format is tab delimited text cellfile since it suppports more features (azimuth, layers, height etc...)

Tab delimited text cellfile

The cellfile should be named cellfile.txt or [MCC][MNC].txt like 28401.txt

CELLNAME - name of the cell - you can put anything here
LAT - latitude in decimal format
LONG - longitude in decimal format
LAC - LAC of the cell - number
CELLID - CELLID of the cell - number
AZIMUTH - azimuth of the antenna - number. If you put 360, the cell will be shown as circle. If you want to change the size of the circle put values > 360. Then the circle radius will be value-360.
TECH - technology - 2G, 3G or 4G
NODE - for GSM is empty, for 3G is RNC and for 4G is eNodeB ID - this column is mandatory only for 4G. For 3G you can skip it if "LAC-CELLID" is unique

Optionally you can add the following columns. If you add them you can use this cellfile also with other tools on the site like G-NetTrack and G-NetEarth:
- HEIGHT - antenna height in meters
- TILT - antenna tilt in degrees - positive values are for downtilt and negative for uptilt
- HORIZBEAM - horizontal beamwidth of the antenna
- VERTBEAM - vertical beamwidth of the antenna
- PSC - BSIC for GSM, primary scrambling code - for 3G, PCI for LTE
- ARFCN - frequency channel (optional)
- LAYER - up to 4 (1,2,3,4 ) layers per technology (2G/3G/4G) - with layer information you can make your map view show different cell layers with different colors. Use 1 for lower layer and 4 for higher layer. For example for operator with GSM900/1800, 4 UMTS frequencies and 2 LTE frequencies it will be: GSM900 - 1, GSM1800 - 2, UMTS F1 - 1, UMTS F2 - 2, UMTS F3 - 3, UMTS F4 - 4, LTE F1 - 1, LTE F2 - 2
- INFO - Whatever is written there will be displayed in NEI tab when the cell is serving cell. Use semicolon ";" for new row.

Here is a sample cellfile.

CLF cellfile

CLF cellfile is a format used with some network monitoring tools. It is a semicolon (;) delimited text file. The cellfile should be named cellfile.clf or [MCC][MNC].clf like 28401.clf.
If you want to use clf format for cellfile make sure that there is no cellfile.txt in the cellfile folder, cause then it will be used as cellfile.
The current supported format is clf 3.3.0.
 MCCMNC  Network code MCC and MNC 5 or 6 digits decimal. Field is used for query.
 CID  Cell ID 5 decimal digits with leading zeros for GSM, CDMA and UMTS. For LTE the ECI (E-UTRAN Cell ID) is used in decimal. Field is used for query.
 LAC  Location Area Code decimal 5 digits with leading zeros. TAC for LTE, but is not used for query, but for 2G and 3G.
 RNC  Not really used. Use 0 or -1 if unkown
 LAT  Latitude coordinate in decimal WGS 84. Use point as decimal delimiter!
 LON  Longitude coordinate in decimal WGS 84. Use point as decimal delimiter!
 POS-RAT  Accuracy of the site coordinates. Use -1 for the exact position.
 DESC  Cell description. Put any text for describing the cell here, but avoid characters like ; or " or '
 SYS  Radio system:
 0: unknown
 1: GSM
 2: CDMA
 3: 3G / UMTS
 4: LTE
 LABEL  Short label with up to 8 characters to identify the cell in the map or log file
 AZI  Azimuth of the cell in degrees. Only integer values are used.
 -1: unknown
 0-359: azimuth in degrees
 360: omni directional
 HEIGHT  Antenna height above ground level of the cell in metres.
 -1: unknown
 0-999: use point as decimal delimiter
 BW  Beamwidth of the antenna.
 -1: unknown
 0-360: beamwidth in degrees. Only integer values are used.


Here is a sample clf cellfile

 

Logfile

Here is description of logfile columns:

Timestamp - time of the measurement
Longitude - longitude of measurement
Latitude - latitude of measurement
Speed - speed at the time of measurement in km/h
Operatorname - name of the operator
Operator - MCC and MNC of the operator
CGI - Cell Global Identity of serving cell
Cellname - name of serving cell - from cellfile
Node - RNCID on 3G, eNodeBID on 4G
CellID - CELLID of serving cell
LAC - LAC of serving cell
NetworkTech - current technology - 2G, 3G, 4G
NetworkMode - current network mode
Level - RxLev on 2G, RSCP on 3G, RSRP on 4G in dBm
Qual - RxQual on 2G, ECNO on 3G, RSRQ on 4G
SNR - SNR (4G only)
CQI - CQI (4G only)
LTERSSI - RSSI
DL_bitrate - current downlink bitrate at the time of measurement
UL_bitrate - current uplink bitrate at the time of measurement
PSC - PSC on 3G, PCI on 4G
Altitude - altitude
Height - height over ground level, provided ground level altitude is set in Settings
Accuracy - GPS/Network accuracy of location
Location - G for GPS, N for Network accuracy
State - I (idle), V(voice), D(data)
PINGAVG - average ping result from data sequence
PINGMIN - min ping result from data sequence
PINGMAX - max ping result from data sequence
PINGSTDEV - standard deviation for ping statistic from data sequence
PINGLOSS - ping loss in percents
TESTDOWNLINK - average downlink bitrate from data sequence
TESTUPLINK - average uplink bitrate from data sequence
TESTDOWNLINKMAX - maximum downlink bitrate achieved during data sequence
TESTUPLINKMAX - maximum uplink bitrate achieved during data sequence
Test_Status - status of data sequence test
DataConnection_Type - Mobile or WiFi
DataConnection_Info - WiFi SSID when on WiFi
Layer - serving cell layer (from cellfile)
Filemark - filemarks saved during logging
RSV1 - 5 - reserved parameters
NCellName1-6 - Neighbor cell name - from cellfile
NCellid1-6 - Neighbor CELLID
NLAC1-6 - Neighbor LAC
NCell1-6 - Neighbor CELLID on 2G, PSC on 3G, PCI on 4G
NRxLev1-6 - Neighbor level in dBm
NQual1-6 - Neighbor RSRQ on 4G
NDistance1-6 - distance to neighbor cell
NBearing1-6 - bearing to neighbor cell

How to prepare Floorplan

Load floorplan from image files (jpg or png) located in \floorplan folder. Index file index.txt describing edge locations also should be present in the folder

How to load floorplans:
1. Prepare image files for all floors. The image format must be jpg or png.

The floorplan image has to be oriented towards North.





2. Prepare text file for geocoding. This means to tell the app where to put your images on the map. Create file index.txt with rows for each image and following content (tab delimited)

imagename longitudeSW latitudeSW longitudeNE latitudeNE
where SW and NE are South - West corner and North - East corner.

Here is an example:
floor1.png	23.378626	42.660569	23.381324	42.662407
floor2.png	23.378626	42.660569	23.381324	42.662407
Note that in the example above floor1.png and floor2.png are the names of the image files for the specific floor. Also do not forget that the format is tab delimited. You have to put tabs (not spaces) between the values.

3. In folder G_NetTrack_Pro_Logs/floorplan put the floorplan images and create text index file (index.txt) with rows for each image and following content (tab delimited)

Make sure you have no empty rows in index file.

4. Go to Menu - Load Floorplan. The floorplans will be shown on map and for each floorplan a kml file will be created to be used with Google Earth. Notice that you have to change the image location tag <href> if you copy kml file and intend to use it on your computer.


Here you can download floorplan sample.

Known issues

Not all the phones are capable of reporting the measurements:
- CELLID and LEVEL - if you see that LEVEL is less than -200 that means that your phone does not report anything and can not be used for measurement purposes.
- RXQUAL, ECNO, PSC is not reported by all phones.
- Neighbor cells are not reported by all phones.
- Some phones do not update values for levels or serving cell.

If your phone manufacturer has not implemented correctly needed functions for reporting there is still hope.
Try this:
1. Go to Settings - Other and check 'Use old functions' for serving and neighbor cells. This will make phone to use old functions, which may be correctly implemented by phone manufacturer.
2. Go to Settings - Other and check 'Force updates'. This will help if your level and cell values are correct, but are not updated.
3. If nothing of above helps you have to update your phone software or wait for such update if it is not available at the moment.


Check Phone Measurement Capabilities for list of phones and measurements that they report.
If your phone does not report some measurements the only thing you can do is to search for software update from device manufacturer. There is no possibility a change in app to make your phone to report properly.


Tips & Tricks

How to improve G-NetTrack map performance.
Map performance depends on number of objects drawn on the map. The objects are:
- Cells - it include two types of objects: line and cell name
- Log points - the points drawn each time the location is changed
- Route points - the points of loaded predefined route (Pro version only)

When the number of objects becomes big (too many cells in cellfile, too long log, or too long route) then the map performance deteriorates and the app is slowed. This depends on the phone capabilities (CPU, RAM). It depends on the phone but generally the Google map cannot handle well more than 5000 objects. Bear in mind that each cell consists of two objects - line and name. The map performance can be improved by taking the following actions to reduce the number of objects without losing the app functionality.

1. Reduce the number of cell objects.
Loading of cellfile has two stages:
Phase 1. Loading cells in memory - the cell information is read from cellfile, loaded in memory and used by the app for serving and neighbor cells information.
Phase 2. Visualizing cells on map - the cells are visualized on map. It depends on the phone but generally the Google map cannot handle well more than 5000 objects. So for improving map performance you can control it with:
- option "Max visualized cells" (default 1000) in Settings-Sites. This is the max number of cells that will be visualized from all cells that are loaded in memory. If you want to increase this number you can use the following features below to achieve better map performance.
- option "Visualize only sites in range" (default - YES) and set [range of visualized cells] (default 2000m). This way you make sure that closest sites will be visualized. For [range of visualized cells] select values that will guarantee that number of cells in this range is not bigger than [Max visualized cells]. In this way no surrounding cell will be missing on map.
- uncheck option "Show cell names". Then cell names won't be shown which will reduce the number of map objects and will improve map performance.
- use option "Show dots for cells" this will draw dots instead lines for cells which improves map performance.


2. Reduce the number of log points - Change [Log Reduction Factor] in Settings - this determines when a log point is drawn on the map. If the value is default (1) then every location change bigger than 15m is drawn as log point. If you put value N bigger than 1, then every N-th log point is drawn on the map which results in less log points and improved map performance.
Note that the number of samples in text and kml log is not affected and stays the same.


3. Reduce the number of route points - when predefined route is loaded it can contains a lot of points which are not necessary and can be reduced without losing the route direction. Change Route Reduction Factor] in Settings - this determines when a route point is drawn on the map. If the value is default (1) then every route point is drawn. If you put value N bigger than 1, then every N-th log point is drawn on the map which results in less log points and improves the map performance.

Contacts

email: info@gyokovsolutions.com
G-NetTrack facebook page