I have upgraded to windows 10 mobile with windows insider slow ***** ring... But today the phone is not unlocking even after I have entered the PIN.... Please help me
Have you tried a hard reset? Hold the power and volume down until it restarts. If it doesn't help, use the recovery tool on the pc to go back to 8.1. The phone version is still buggy so stuff like this happens. It is a risk that you are taking as an insider.