How to Erase Data With Find My iPhone
To remotely erase the data on your missing iPhone, you’ll need to do a little setup first to make it possible.
Enable Find My iPhone
Turn on the Find my iPhone feature on your phone and connect an active iCloud account on your device for Find My iPhone to work. An iCloud account is offered for free from Apple.
Remotely Erase Your Missing iPhone
When you’re sure you won’t get your phone back, use the remote erase feature.
Self-Destruct After Too Many Failed Passcode Attempts
You can set your iPhone to automatically erase its data if the wrong passcode is entered more than 10 times by following these steps.
Use Caution With Erase Data Settings
If you have kids or someone else that uses your phone, the Erase Data option could be a problem if you’re not careful. Your child might innocently try to guess the code too many times and accidentally erase your iPhone’s data. The remote erase feature might make more sense in situations where you have others who regularly use (or play with) your iPhone.