Please IT gurus in the house kindly help me out of this. Yesterday evening my Samsung galaxy s6 battery died on my way home. I was hoping the 1% it was showing you last till I get home. Now, when I got I, I connected the phone to my power bank. After some minutes, I powered it on. From that time till now, it has refused to accept any Sim. It rejected the Airtel I have been using on it and every other Sim I have.
It is saying I should input Network Unlock Pin.
Wetin be that?
Guys please help out.