Forum Thread: How to Test Your Samsung Phone by Using Secret Code *#0*#

Not sure about the sensor, color and other function in your new phone is working ? If you want to test your new Samsung phone to make sure every sensor, every color is working correctly, you just need a Samsung phone and a code to launch HwModuleTest which already in your Samsung phone.

Step 1:

Press your phone icon like you are about to make a call.

Step 2:

On keypad, press the code on the topic here and you will see a white screen with all of your phone sensor. Have fun!!
Note: My phone is Galaxy S4 so i not sure about other Samsung phone. ><

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