My first Lumia 920 and the replacement I got recently, both lag when I scroll on the home screen and certain applications. the issue is constant, regardless of it being plugged in or out. I don't know why this is, my sister's lumia 920 DOES NOT have this problem. neither does my friend's L920, but my both lumia 920 I had and have (my older and the current replacement of that old one) have the same problem. Is any one else experiencing this problem? Please let me know! I contacted nokia care here in the US, after I was having the same problem with my replacement but I haven't gotten a reply in more than a week...Please let me know if anyone else is facing this problem or know the solution to this problem..:unhappysweat: