Android phones have a series of hidden settings that can be accessed using secret codes.

Using the codes is very much at users risk but, if you dare, they can provide access to hidden options within the phone.

All of the codes are used by dialing them into the phone App and then pressing send Button and it will bring up a menu as soon as you do that though the extreme factory reset option will just start going straight away.

Note that many of these may be manufacturer specific, so they might not work with all devices, and, as always, proceed carefully

The codes and the features are provided below for Users:







Codes Features





*#*#4636#*#* About Phone

*#*#7780#*#* Restore Factory Settings

*2767*3855# Reinstalls Phones Firmware

*#*#34971539# About Camera

*#*#7594#*#* Changing the power button behavior Enables Direct Poweroff

*#*#273283*255*663282*#*#* Backup Media Files

*#*#197328649#*#* test mode for service Activity

*#*#232339#*#* Wireless Lan Test

*#*#526#*#*

*#*#528#*#*

*#*#232338#*#* Display Wi-fi Mac –address

*#*#1472365#*#* GPS Test

*#*#1575#*#* Different GPS Test

*#*#0283#*#* Packet Loopback Test

*#*#0*#*#* LCD Display Test

*#*#0673#*#* Audio Test

*#*#0289#*#*

*#*#0842#*#* Vibration and Backlight Test

*#*#2663#*#* Display Touch-Screen Version

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

*#*#0588#*#* Proximity sensor Test

*#*#3264#*#* RAM version

*#*#232331#*#* Bluetooth Test

*#*#7262626#*#* Field Test
ea

Read more here:http://www.yarnmeblog.com.ng/2017/12/hardware-codes-for-android-devices.html