If you're so inclined, I'd try a fresh install
The trouble with this is you lose all your call and messaging history. It's all or nothing with iOS device backups. I recently upgraded from a four year old iPhone 4 to a 5s. I thought a great opportunity to start clean: I installed only the apps I wanted and configured all my accounts, and was even satisfied with my photos from the old phone being an their own album instead of the camera roll. Loss of the message history in particular irritated me so much so quickly that I restored from backup in a few days. There are some apps out there that claim they can do this, but after a few wasted hours faffing around with one, I ended up with a messed up phone.