Factory reset works... I posted this on the SMS app lag thread... I did factory reset and now phone is working perfectly... I had severe lag on messaging app and now it's faster than ever.. Also, threes an app called mybackup that is free for one month... You can do a backup onto the app and get apps, call logs, SMS, mms, home settings restored in a matter of minutes... Perform backup to app, do factory reset, then redownload my backup and do a restore... Every single setting won't come back to the way you have it now but it will be close... And your phone performance will be better than ever, I guarantee it..