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English Troubleshooting GPRS problems

Friday, 1. May 2009 18:19:58, by Manolis Andreadakis

 

Contents

Choosing the right GPRS connection is critical to the operation of Live Tracking.

Only my username is shown on the website, and "No GPS points yet"...

... but i see on my phone that the GPS is getting good signal :

CAUSE: The Login packet (the one that sends your username, phone model etc to the server) is send via TCP, the data packets with the GPS positions are send with the UDP protocol.

In some cases TCP traffic can pass through a WAP internet connection where as UDP cannot.

SOLUTION:

Make sure you are NOT using a WAP connection but rather an internet GPRS connection.

Usually WAP connections require the configuration of a proxy.

See APN settings (and add your working settings there to help others) and also Phone Settings

I can see my GPS points being send to the server but my user name does not appear...

... instead 'guest' is displayed, and phone model/gps model are set to unknown

CAUSE: The Login packet (the one that sends your username, phone model etc to the server) is send via TCP, the data packets with the GPS positions are send with the UDP protocol.

In some cases TCP traffic is redirected via the proxy server that is defined in the phone settings where as UDP is not.

SOLUTION: See the settings for your phone and find the "Proxy" setting in the Internet settings. Delete any "Proxy" entry you find

See APN settings (and add your working settings there to help others) and also Phone Settings

After landing i see the program asking me for permission to connect to the internet...

... and no points have been send to the server or there were some send but then stopped

CAUSE 1: Incorrect security settings for java.

SOLUTION 1: See Enabling Access Permissions or specific instructions for some selected common phones

CAUSE 2: You had interruption in mobile singal which could happen due to several causes:

SOLUTION 2: Each time this happens, java asks you which of the available GPRS connections to use. The Solution is to only have ONE GPRS connection , by deleting all the other ones. In this specific case java auto-selects the only available GPRS connection and dont ask you.


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