In this tutorial, we will show you how to Factory Reset your Samsung Galaxy A21s, which brings it back to its out-of-box configuration, as well as fix any software and hardware problems. Read on to ...

How to reset your Roku TV (and why I do it even if my system is working properly) ...

When you tap delete on your Android phone, a file might disappear from your view. But it's not really gone. You've erased the index of that file, but the file itself is still in the phone's storage.