Android phones have a recovery mode that lets you access the bootloader and wipe data if you're unable to normally boot your phone.

Android Recovery Mode is a tool that can help you fix problems with your Android devices. You boot into recovery mode, and then you can troubleshoot your problems. Most people never need to use it ...

Recovery mode is often indispensable for solving phone problems. This guide explains what it is and precisely how to access it on most major Android phones.