Hi, Lisa here and I'm going to tell you how you can restore your iPhone using iTunes. So, first, you'll plug in your iPhone. Then you'll see your phone on your left hand side. You can click on it. And then up in the top box, underneath where it tells you what operating system you're on, you're going to see two options, you'll see update and restore iPhone. When you restore your iPhone, it's going to erase everything off it and make it just like it was when it was brand new, resetting it back to factory settings.
So, when you're ready you'll just click on that button. It will restore it to factory settings and update your software and when you're done you'll have the option to either set it up as a new phone or restore it to some old backup that you have on your computer. And that's it. That's how you restore your iPhone on iTunes.