For the past few weeks my TP has been randomly locking it's self and asking for a password to unlock the screen that I have never set up. If I soft reset it goes away for a few days then will come back, sometimes durring the day or over night.

I've tried setting up a password, locking the phone, unlocking, then removing the password and the problem still happens. I'm afraid my next step is a hard reset but wanted to pick the TP brains on the forum first!!!

Thanks in advance!