There are a few ways to block all incoming calls on Android, but the best way to do it is by using a phone app. There are many different phone apps that can help you do this, so choose one that you feel comfortable using. If you’re not sure which app to use, here’s a list of some of the most popular ones:

  1. Google Now: This is an excellent phone app for blocking all incoming calls. It has a variety of features, including call history and caller ID information.
  2. Facebook Messenger: This is another great phone app for blocking all incoming calls. It has a variety of features, including group chat and messaging.
  3. WhatsApp: WhatsApp is another great phone app for blocking all incoming calls. It has a variety of features, including call history and messaging.