Evening guys. 

So a couple days ago I updated my phone, unlocked my phone to do so, the update went ahead without issues, on restart it asked me to put my password in, told me it was wrong, time and time again, same password I've used for 2 years. 

I'm in a discussion (argument) with Samsung, incredibly I'm apparently the only person to have this problem according to them. A quick Google search disproves this but just out of curiosity has anyone else had this happen?