With the new iPhone arriving soon there will be lots of iPhones being sold on eBay and other places. But your iPhone does not remove your personal data when you do a wipe and restore.
Before selling your iPhone on eBay, sending it to Apple, or otherwise sharing it, note the following: performing a â€œRestoreâ€ operation on the iPhone does not delete personal data from the device. In fact, mail, contacts, and various other data remain intact on the device after a restore, making the process unsuitable as a preparatory measure for iPhone resale or service. [ read more Warning iPhone ‘Restore’ does not delete personal data ]