Frequently Asked Questions

Settings by mobile phone

HTC P3300
Settings to use the built-in GPS receiver:

Go to the Settings menu and the GPS tab and choose Manually setup GPS and Port COM4.
HTC P3600
Settings to use the built-in GPS receiver:

Go to the Settings menu and the GPS tab and choose Manually setup GPS and Port COM9 and Baudrate 57600.
MDA vario / qtek 9100
Although many users report success, some report problems when using trackr! at the same time as TomTom. If TomTom doesn't work correctly anymore and 'lags behind', it's probably because the mobile phone is too slow.

It's possible to raise the clockspeed using the omapclock software, but this could cause damage and is completely at your own risk.
Mio A701
To use the built-in GPS receiver of the Mio A701, you can try to manually setup the GPS in the Settings menu and the GPS tab to:

  1. Port: COM4, Baudrate: 4800bps to use SiRFInstantFix (SIF)
  2. Alternatively try Port: COM2, Baudrate: 57600bps

Motorola Q9h
Settings to use the built-in GPS receiver:

Go to the Settings menu and the GPS tab and choose 'Windows (Intermediate Driver)'.

Use version 0.9.15 or later.
Nokia: why do the recurring confirmation messages popup after starting trackr! ?
This is a 'safety setting' on Nokia mobile phones. You can disable them by choosing 'always allowed':

Nokia N95:
Menu -> Applications -> App. Mgr. -> trackr! -> Options -> Open -> Select
  • Access point: choose your default access point
  • Network access: Always allowed
  • Positioning: Always allowed
Nokia other:
Menu -> Tools -> App. Mgr. -> trackr! -> Options -> Suite settings -> Select
  • Network access: always allowed
  • Positioning: always allowed

Important: use trackr! version 0.3 and up.
HTC Touch Diamond
Use the GPS setting 'Windows (Intermediate Driver)' to use the internal GPS receiver.

If trackr! crashes after starting a session and showing the status message 'device(s) found', please check if you have the latest ROM version for the HTC Diamond Touch device. Newer versions of the ROM fix problems with GPS access.
trackr! for Blackberry uses the Internet gateway of the carrier to be able to send location data to the website. Make sure you have configured the APN settings at 'Options' -> 'TCP'.

WARNING: data traffic could be charged extra. Get more information about this at your telco carrier.
Samsung Omnia
Use the GPS setting 'Windows (Intermediate Driver)' to use the internal GPS receiver.

Mobile application

The Settings menu-option is grayed out, how do I change my settings?
The settings can only be changed when there is no active GPS session running. Choose the Stop GPS menu option. Now the Settings option will be available
The COM port I want to use in the GPS tab in Settings is not available in the list?
You need at least Microsoft .NET Compact Framework 2.0 SP1 to be able to detect the COM ports correctly. Download the latest version from the download page.
Can I use trackr! at the same time as TomTom (or any other GPS software)?
Yes, that's possible. The settings for this depend on the device that you're using.

Make sure that the so called GPS Intermediate Driver is used. That is standard functionality of Windows Mobile which allows multiple applications to receive GPS date simultaneously. Have a look at this page for more information.

Be aware that TomTom does not always handle these settings as expected. That is, if you configure TomTom to use the shared COM port, TomTom can only open this port if you FIRST start another application that accesses the shared port. This means don't start TomTom until you have started trackr! first. Now trackr! and TomTom will work at the same time and both will be able to access the most recent GPS data. Apart from that you can also stop trackr! as soon as TomTom has started, TomTom will then continue without problems.
How much data will be sent from the mobile phone to the server? How much will it cost me?
There are two scenarios where position data is transmitted to the server:

  1. During live tracking. In this scenario position data will be sent to the server with an interval as configured in the settings. This data only contains the positions captured since the last time the mobile phone contacted the server successfully. The amount of data sent depends on the number of positions captured. If you drive on a straight road, not so many positions will be captured. However, if you walk on a meandering path, there will be more. Just to give an indication: on average less than 1 kb of data is sent and received. This often involves just a few positions in every request.

  2. During transmission of a complete track afterwards (manually activated using the Send data menu). These tracks show up on the Saved tracks list on the website. In this request the number of positions can be several hundreds. For about 275 positions in a track about 30 kb of data will be sent.

Besides these scenarios, data will also be transmitted during requests for the position of your friends (only if you have enabled this). Again this depends on the time interval you configured and the number of friends in your friendslist.

However, by far the most data will be spent when using the map feature! For every map visible this can run into 120 kb. If you use the map feature and leave it running while moving, data usage will increase rapidly because new map information has to be downloaded over and over again. That's the reason for the warning when starting the map feature for the first time.

If you want to exactly track your data usage, it will help to install software that measures data traffic. This will help keep control of the costs.

The data traffic costs depend on the GSM service provider that you are using. Contact your service provider for more information.
I configured live tracking with an interval of 60 seconds. However, data is not always transmitted every 60 seconds. The log shows: Not sending live data: already sending=Fals positions captured=0
This is a feature, not a bug :-)

The line in the logfile shows that the application will not send any data at that time because no new posions have been captured (see 'positions captured=0'). The application determines whether or not to capture a position depending on a number of rules, for example the distance to the last saved position should be greater than a certain value.

This way the number of positions in a track will be limited because there's no use transmitting and saving 100 positions covering a distance of only 10 meters.

In this particular case no positions have been captured, probably because you didn't move around (enough). To reduce data traffic, this will not be sent to the server.
I can't send saved tracks / the 'Send data' menu-option is grayed out.
To send saved tracks from your mobile phone, the GPS session has to be stopped first. After that, the Send data option will not be gray anymore if saved tracks (not sent to the server before) are available.
What version of the .NET Compact Framework is installed on my mobile phone?
There are two ways to find out:

  1. Start trackr! and use the View log menu-option. The first line (on the bottom) will show the detected version.
  2. Start the Explorer and start the cgacutil application in the Windows directory.

Compare this value to the following list:

1.0.2268.0 = CF 1.0 RTM
1.0.3111.0 = CF 1.0 SP1
1.0.3226.0 = CF 1.0 SP2 Recall
1.0.3227.0 = CF 1.0 SP2 Beta
1.0.3316.0 = CF 1.0 SP2 Final
1.0.4292.00 = CF 1.0 SP3

2.0.5238.0 = CF 2.0 RTM
2.0.6129.0 = CF 2.0 SP1
2.0.7045.0 = CF 2.0 SP2


Why doesn't a live track show up in the saved tracks list?
When using live tracking, only the last live session track is saved on the website. However, every track does get saved locally on the mobile phone (even if you don't enable live tracking).

To have your tracks show up as saved track on the website, choose Send data in the menu on your mobile phone.
Is it possible to show the export file from saved tracks as track in Google Earth?
Yes, just drag the downloaded GPX files from the Saved tracks section to Google Earth.