secret codes: samsung champ gt c 3303

Java test menu: *#52828378#
Gprs tool:*#4777*8665#
Model:*#92782#
Hard reset:*2767*3855#
Imei:*#06#
Unique number:*#03#
Message test:*#6748378#
Fm test:*#368378#
Other tests:*#0*#