It's useful for resolving performance issues or preparing the phone for resale. Note that once data is wiped, it cannot be recovered unless you use advanced data recovery software. Gain Root Access ...
A bootable program on an Android flash memory partition that is used to perform a factory reset or restore the original OS version. In order to install a different OS version (a different ROM ...
You get quicker software updates. Android phones get fewer updates than iPhones, and when they do, they happen less frequently and are often delayed with the exception of Google's Pixels.