Well I will tell you how to restore you i Phone back to it's factory settings in a few simple steps.
Restoring your device will erase all data from your i Phone or i Pod Touch, including songs, videos, contacts, photos, calendar information, and any other data.
And while losing your i Phone’s data is never a pleasant experience, restoring i Phone data from a backup is a fairly simple task that can have you up and running again in no time.
If you need them, you can get the latest versions of i Phone firmware, i Pad firmware, and i Pod touch firmware directly from Apple.
While it is connected, simply hold down the home and power button together for about 10 seconds, then release the power button while continuing to hold the home button.
A few seconds later i Tunes should detect your i Phone, Select the "Summary" tab. You will now be prompted with a screen that asks if you wish to back up your i Phone before restoring.
If you’re syncing to more than one machine, you should have backups on both computers.
Just choose the computer with the backup you prefer).