When you resell your iPhone 5S, you may need to erase all the data on it to prevent others from accessing. If so, have a try on SafeEraser.

Watch Video:
Code:
youtube.com/watch?v=YoijgZZ2V2I
Warning: iPhone "Restore" does not delete personal data! - 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 iPhones

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

File Types Supported to Erase:
Contacts, SMS Text Message, Call History, Calendar, Email, Note, Reminder, iTunes DB, App (and generated data), System setting, Apple ID, Photo, Video, Voice memo, Keyboard Cache, Safari Bookmark, Passbook, and more

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