Theihnop huai Hidden Codes for Android

Use the dial pad to type in the below codes

*#*#4636#*#* - Shows Phone information, Battery information, Battery history, Usage statistics
*#*#8255#*#* - Show GTalk service monitor
*#*#1111#*#* - Service Mode
*#*#232331#*#* - Bluetooth test
*#*#3264#*#* - RAM version
*#*#0588#*#* - Proximity sensor test
*#*#2664#*#* - Touch screen test
*#*#0842#*#* - Vibration test