How Do I Completely Reinstall My Android?

How do I fully reinstall my Android?

First you will need to boot into the recovery menu (how to do this, read here), then select the wipe data / factory reset section (it can be called Wipe & Reset). Then, navigating the menu using mechanical keys, select Wipe All Data and confirm the selection by clicking Yes – delete all user data.

Does a factory reset delete everything?

When you do a factory reset on your Android device, it erases all the data on your device. It is similar to the concept of formatting a computer hard drive, which deletes all the pointers to your data, so the computer no longer knows where the data is stored.