So my wife is experiencing a major issue with her iPhone 5. The thing wont hold a charge. As soon she leaves the house the battery will drain. in about 3-5 hours it will be around 50% with no usage at all. I have tried to do a a reinstall/restore but its still doing it. she has replaced the phone twice already

So here is my question. I have been restoring from a pervious backup. Do you think its worth just totally wiping everything and starting over?