How to run LCD test in android?

Have you ever heard of LCD test in SAMSUNG android devices..?

It provides you to check the functionalities of your Android device like camera , speakers , touch sensivity. This is used to check the status of your Android device. To check this, just go to your dial-pad and dial this number *#0*# then you will see a screen like this


 

In this screen, you can test various functions. By tapping on different tiles, you can check display functions, vibrate functions, touch sensitivity, sensor, speaker test, run camera test, sleep mode and sub-key functions.



NOTE: This code is applicable for Samsung Android devices. This may or may not work in other brand devices as it varies from one device to another.

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