I bought an unlocked phone from ebay. It arrived unlocked. I upgraded it to 4.4 (kitkat), it relocked. I can't seem to revert the phone to anything earlier than 4.4. So now I have a sprint locked phone that I have to sell.
I've looked on line and even with a new code, there doesn't seem to be away to unlock the phone or revert the OS without rooting it.
Know anyone on Sprint looking to buy a Samsung s4 mini?