I've been using HTC Desire for the last two years. After buying it I rooted and install new ROM for some reason like below - 1. Battery backup problem 2. Device was not updated with the newer OS version (2.3 was new at that time) 3. Also some AOSP ROM was said to be faster than HTC stock ROM with sense Now, my question is what are the problem with S3 which motivates to go for a custom ROM?