Even after 4.1 when u unlock the phone sometimes it flashes/blinks for a second. I remember others had this. It only happens sometimes and only when you unlock it.
I too, have this problem. It only blinks at the bottom of the screen when I exit a certain app. Doesn't really bother me though. If you're unhappy about it, I'd suggest you take it to apple and see what's the dealiO yO (=Even after 4.1 when u unlock the phone sometimes it flashes/blinks for a second. I remember others had this. It only happens sometimes and only when you unlock it.
No it's not that it continueously blinks. It's only very very few times and very rare. It's only when i unlock it and the whole screen blinks as if I took a screen shot. Almost like a screen shot but without the white after flash. Hope that makes sense. When u unlock the phone by sliding it