How do I block a phone number on an Android phone?

Here we go:

• Open the Phone app.
• Tap the three-dot icon (top-right corner).
• Select “Call Settings.”
• Select “Reject Calls.”
• Tap the “+” button and add the numbers you want to block.

What happens when you block a number on Android?

First off, when a blocked number tries to send you a text message, it won’t go through, and they will likely never see the “delivered” note. On your end, you’ll see nothing at all. As far as phone calls are concerned, a blocked call goes directly to voice mail.