A few weeks ago I bought Vodafone Smart Prime 6 (Lollipop android). Since I run it for the first time it is randomly asking me for my PIN code without any reason. It's really annoying. I have the default settings, except the screen lock, I set a pattern lock. I also noticed the PIN is very often prompted when I'm charging the phone. I tried two SIM cards, each is a different operator, it did not help. Any ideas how to solve it? I'm about to take it back to shop.. Thanks.
