Forward all calls directly to the mailbox - how it works

On your Android smartphone, you can forward all incoming calls directly to the mailbox and thus enjoy a few quiet hours without having to switch the phone off immediately. Here's how it works:

Forward all calls directly to the mailbox

• If you do not want to receive any calls at all, enter the control code * 21 # in the keypad of your telephone application. Later deactivate this configuration again with control code # 21 #.

It was tested on a Nexus 5 with Android 4.4.2. In another practical tip, we will show you how to extend the ringing time of your smartphone so that the mailbox does not answer the fourth ring immediately.