I've had an iPhone 4S since it came out- and I honestly cannot notice any difference in speed and performance. In fact in some cases it is slower than my iPhone 4- but it is DEFINITELY slower than my brothers iPhone 4S. Does anyone else notice this at all? Im thinking it could have something to do with the fact that I have been using the same iTunes sync since 2008 when I got my 1st iPhone, and have updated all my new phones to the backups of all the previous iPhones I've had. I recently deleted ALOT of unused apps, but still notice no difference. Any help?