Some important code android phone

*#*#7780#*#*
For factory data reset
*2767*3855#
For factory reset
*#*#34971539#*#*
For imform your camera buttom
*#*#7594#*#*
End call and power!
*#*#197328640#*#*
For service mode.
*#*#1472365#*#*
GPS test
*#*#232331#*#*
Bluetooth test