Hardware Testing Codes
How about trying to see who’s been trying to check out your phone’s hardware? Like the camera, the lights and the software? Here are the codes for that:
For Audio test: *#*#0289#*#*
For information about your camera: *#*#34971539#*#*
To test Back-light/vibration: *#*#0842#*#*
For software and hardware info: *#12580*369#
To test the touch-screen: *#*#2664#*#*
For LCD display test: *#*#0*#*#*
