Hey guys... I have collected some very interesting codes from internet. those codes are called hidden secret codes of android mobile phone. all of these codes are working properly with Samsung, Google and all other android os s mobile phones. Note: I have collected those codes from www.topone2u.com . In that case all credit goes to TopOne. Codes --Uses *#1234# --Basic Information *#12580*369# --Basic Information *#0228# --Battery Information *#32489# or *#2263# --Service Menu(Code Command) *#*#197328640#*#* --Service Menu *#*#7780#*#* --Factory Reset *2767*3855# --Full Format/ Hard reset *#273283*255*663282*#*#* --Backup *#*#34971539#*#* --Update Camera Firmware *#272*IMEI# --Change the sales code & change the user data *#*#7594#*#* --End Call/Power System *#*#8255#*#* --G-Talk Service Monitor *#*#232337#*# --Show Bluetooth Address *#*#232338#*#* --Shows Wi-Fi MAC Address *#*#3264#*#* --RAM Version *#*#0*#*#* --Full Phone Test *#*#232331#*#* --Bluetooth Test *#*#0842#*#* --Vibration Test *#*#2664#*#* --Touch Screen Test *#*#0588#*#* --Proximity Sensor Test *#*#0673#*#* or *#*#0289#*#* --Melody Test *#*#1472365#*#* or *#*#1575#*#* --GPS Test *#*#2663#*#* --Touch Screen Version *#*#526#*#* --WLAN Test