I don't have a password set to unlock my phone. My phone somehow locked I need a pin to unlock it.

[AC Question]

I need instructions on how to unlock my Note. It locked on its own. I don't have a pin set up for it but now I need one to unlock it.

 

[B. Diddy]

Welcome to Android Central! Were you using fingerprint unlock, and the scanner failed? Devices don't lock by themselves, unless they've experienced a pretty significant glitch (in which case you probably won't be able to recover it).