Tricks About Android Operating System

Here are some of the tricks on your Android Operating System/

android OS cellphone.

Kindly note that: There are mentioned codes can be dangerous

General :

*#*#4636#*#* - Phone / Battery / USage information

*#*#7780#*#* - factory data reset

*2767*3855# - factory format

*#*#273283*255*663282*#*#* - File copy / backup

*#*#197328640#*#* - Service mode.

WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN

test (Use "Menu" button to start various tests)

*#*#232338#*#* - Shows WiFi MAC address

*#*#1472365#*#* - GPS test

*#*#1575#*#* - Another GPS test

*#*#232331#*#* - Bluetooth test

CODES TO LAUNCH VARIOUS FACTORY TESTS:
*#*#0283#*#* - Packet Loopback

*#*#0*#*#* - LCD test

*#*#0673#*#* OR *#*#0289#*#* - Melody test

*#*#0842#*#* - Device test (Vibration test and BackLight test)

*#*#2663#*#* - Touch screen version

*#*#2664#*#* - Touch screen test

*#*#0588#*#* - Proximity sensor test

*#*#3264#*#* - RAM version