You can block or unblock a number on an Android phone using the built-in Phone app's "Blocked numbers" menu.

So you bought a Samsung smartphone through your carrier, and now you’re trying to, as Freddie Mercury sang, “Break free.” There’s a way to do so without too much of a headache, though it’s all ...

There are two ways to find the serial number on a Samsung Galaxy S10 — through your Settings app, or with a short dial code.