[header] How to reset a locked iphone [title] Connect the iphone to your computer using a usb cable. [step] You must use the same computer you initially used to sync your iphone with itunes. Itunes will launch automatically upon recognizing your device. 
[substeps] If itunes asks you to enter a passcode, or you've never synced the iphone with itunes on your computer, follow the steps outlined in method three to reset your iphone using recovery mode. [title] Wait for itunes to automatically sync your iphone with your computer and create a backup.