How to Unlock Android Phone If You Forgot the Password or Pattern Lock

If you have forgotten your password or unlock pattern on your device, you can also use it to perform a factory reset. This will delete all of your phone’s data and restore it to the default settings.
Booting into recovery mode is simple. All you need to do is just turn off your device and then reboot it by holding down some keys combination during boot sequence and your device will enter into recovery mode.

The key combinations differ depending on the device model. Here are some examples:

• Samsung Galaxy Series: Volume Up + Home + Power
• Galaxy Nexus (Nexus 4, Nexus 7, and Nexus 10): Volume Up + Volume Down + Power
• Motorola Droid X2: Volume Down + Power
• Devices With Camera Buttons: Volume Up + Camera

If your device isn’t on the list and none of the above methods work, you can search on Google using the keywords “how to boot <your device model> into recovery mode”.