Erase All iPhone Data Permanently, Nothing Recoverable
No matter you decide to sell your old iPhone 5/4S/4 on eBay as a second-hand product, trade-in for some new device like iPhone 5s/5c or donate it to charity, you'd better wipe all the data in your iPhone so as to prevent your important private information from being stolen by identity thieves. Use iPhone Data Eraser, you can perform the erasure by yourself.
iPhone Data Eraser is an outstanding program that empowers you to erase the iPhone data including contacts, SMS, pictures, videos, call logs, and so on, permanently and become unrecoverable even if you use iPhone Data Recovery.
It is quite efficient and safe that you don't need to worry that these wiped data will be retrieved back later because the program uses US Military spec over-writing technology to make the data unrecoverable. Even if your iPhone was just jailbroken or the carrier of your iPhone was locked, you can use iPhone Data Eraser to erase all your private iPhone data permanently.