Hel understanding the hiden app. Field Test App
Ok there is a number you can enter and it will run this app.
(Why this is imp. to me. To see if your phone or your service provider is messing with you.
First Screen is GSM Cell Environment.
Im intrested in studying up about the GPRS Information and the Cell Information / Equvilent PLMNs and Service Cell/Mobile Country CODE. Which for me jumps between 404 and 65555
The 404 rings a bell because when my wifi fails it throws an error code 404
Some links that help in understanding the data in the feild test app would be nice.