When you are going to resell your old iPhone 4, don't leave your personal information vulnerable to identify by others. With SafeEraser, you can completely delete all data on your iPhone 4 and keep them safely before selling.

Watch Video:
Code:
youtube.com/watch?v=3olkPgV-1-M
iPhone "Restore" does not delete personal data! - Warning From CNET

Wondershare SafeEraser
iPhone Data Eraser, Wipe iPhone Remotely, Delete iPhone Data Before Selling
> Permanently erase content from your iPhone 5S/5C/5/4S/4
> Works with all iOS Devices - Jailbroken iPhone friendly and also compatible with carrier-locked iPhone

Supported iOS Devices:
iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, iPhone 4

iPad Air, iPad mini, iPad with Retina Display, The new iPad, iPad 2, iPad 1
iPod touch 5, iPod touch 4

More Info:
Code:
ios-data-eraser.com/