connection error invalid mmi code
So I've been trying to enter the hidden menu to unlock my verion s4 and it does not work and I keep getting the error connection error or invalid mmi code. Is there anyway around this? Any input would be greatly appreciated :)
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Re: connection error invalid mmi code
Your provider can give you an unlock code, as long as they agree to it, sometimes for a price, or free if you are no longer under contract.
Originally Posted by donniedoomsday3