Well at work been using phone to check texts and emails fine. Put in pocket then next time took it out I got a blue flashing light at top of phone so I have an alert. jab home button, nothing. jab power button, nothing. hold power button nothing! uh oh, slightly worries now as expensive (contract) phone not working. plugged charger in nothing. so walked from work to EE store (hate them at best of times). anyway young girl pokes and prods buttons then bosh up comes the screen. She said: "your phone is in a non genuine samsung case I think it overheated" Ummm nope! my work place is a granite basement it is normally cold down here. My phone is fine in a black coat in my car in the sun and felt hot, still works fine. Unknown what caused it but it is working again. Told her I was not going to buy a samsung case from her. I have a rubber and plastic armored case to protect my phone. Had this case since early march when got the phone. Anyone else have similar problems?