Turkcell GSM Secret Codes

You can check your remaining credits by dialing *123#
*177*2# to request information of prize points.
Putting #31# / *31# in front of the number that you'll call, hides or shows your number.
Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.
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