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

Back Tap is one of those iPhone features you probably didn't know existed — or didn't think you'd use until you tried it. Introduced in iOS 14, it lets you assign quick actions to a double-tap (or ...

You can set up voicemail on your Android phone directly from the phone's keypad or its Voicemail app if it features one.