Got mine last Nov. 12. So far so good. We're in Pinas so I don't think I'll experience the screen freezing in cold temps. I have my phone set up on my car for waze and the aircon vent is directly behind it so sometimes it get's really cold, but haven't experienced any freezing. Screenburn, so far none too. Burn in, based on what I read, normally happens to AMOLED/OLED screens due to a static image and the phone being kept open in high brightness for long periods of time. From my experience with Samsung, it's normally the notif bars (battery icon, signal icon, etc) and the static app dock (the icons on the lower part of the screen) as well as the keyboard that are "burned-in". Trying to minimize possible burn in by keeping the brightness at low-medium settings. The phone is pretty bright, actually even at those lower settings. It's only when I'm outside and in direct sunlight that I crank the brightness. Battery life for me has actually been awesome. I get about 13-14 hours daily with 5-6 hours Screen on Time and I consider myself a heavy user with Data or Wifi always on. 5 email accounts set to push. Facebook, calls, camera and games. Greenline - crossing my fingers, it's not going to happen to my unit.