Erase your phone (and lock screen) using Android Device Manager

Erase your phone (and lock screen) using Android Device Manager

 

If all the methods above didn’t work out, you need to move on to more drastic measures. In case Android Device Manager is enabled on your phone and unlocking it didn’t work, you can use it to erase all data by selecting the Erase button.

Be aware that this will delete all apps, settings and other data on your phone. The good thing is, once the erasing process is done, you can use your phone again (after setting everything up).