Goodbye old smartphone: How to properly delete your personal data

Clearing out all your personal data means more than just deleting the files. — dpa

You want to sell or give away your old smartphone? Clearing out all your personal data means more than just deleting the files. Here's how to turn your phone into a blank slate.

At some point the time comes for every smartphone. The battery doesn't last anymore, you're envious of the quality of other people's photos, or else some newer model just looks better. In short, the old phone has to go.