Why isn't my Nexus 4 Pin working?

[Android Central Question]

I've had the same pin for the past two years. It suddenly stopped working tonight - no idea why. I tried logging into my google account to reset it - didn't work. Any idea how to unlock it without doing a factory reset? I don't want to lose all my pics and writing. Also, any idea how this could happen??? Thanks!

Ps.
It's not a 4.4 or lower.

 

[B. Diddy]

Welcome to Android Central! Unfortunately, you can't use Google's Find My Device to change the PIN on your phone -- it only lets you set a PIN if the phone didn't have a screen lock set up to begin with. There is unfortunately no way to bypass the unlock PIN. On the off chance that your onscreen keyboard is glitching, you could consider connecting a basic USB keyboard to the phone via OTG adapter, and see if entering the PIN using the USB keyboard works.