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

Chances are if you use a smartphone with any regularity, you've had to block a number or two in the past. Robo-calls, junk texts, etcetera — there's practically no end to them and sometimes the only ...

It's a good idea to block numbers on your iPhone if you keep receiving spam calls. However, sometimes, you might accidentally ...