so i have done plenty of reading, and it would seem that regardless of pentile or not, OLED screens do burn in if a static image sits for too long. one of the newsest updates for the s4 changed the statusbar to a gradient just for this reason. this also can happen from the keyboard if you are a heavy texter/emailer/typer. just something to keep in mind if you are considering an s3 or s4. keeping brightness low, and not using many stationary image widgets could help it not happen as quickly, but it will still happen. another option would be to wait for the s4 active to come out, as it uses an LCD screen. i might go droid dna just to avoid the oled issue. i cant decide if it is something i am willing to deal with yet.