How to do a factory reset on iPhone

When you need to sell your iPhone, or fix persistent problems, resetting it to the state it was when it came from the factory, can help. Here's how to do it — and what you should do first.If you're having problems, or preparing to sell your iPhone, you can do a factory resetIf you're about to give your iPhone to someone, or if you're just having so many problems that you want to start over, reset the iPhone. It's quick and easy to do a complete factory reset, turning your iPhone back to the state it was when you first got it. Read more...