Scenario 3: Lock screen present, USB debugging activated The following tip does not work on all devices, but is worth a try. Your smartphone does not necessarily have to be rooted in this scenario.

Ever noticed the USB Debugging option on your phone? It's an incredibly powerful feature, but it also leaves your phone vulnerable. Here's how to turn it off.

USB debugging means that if you break your phone's touch screen, you can still retrieve any files you have not backed up.