Apple ID Verification keeps popping up
Hi. I am using iPhone 5S iOS 9.1. Whenever I sign in to the phone I will see this message. (screenshot below)
I reset my phone so many times. I even tried to reset it using DFU mode. I don't know why is this happening. The phone says Apple ID Verification, Enter the password. So I enter the password. But whenever I restart the phone it will pop up again and asks the same thing to enter the Apple ID password. Please fix this, it is really annoying. I tried Sign Out and Sign In in settings and the message still appears when ever I restarts the phone. Please help me. Any help would be appreciated.
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iPhone 5s, iOS 9.1, null