How to Block Unknown Numbers on Your Android Smartphone

Unwanted calls from unknown numbers can be a real nuisance nowadays. Telemarketers, scammers, and spammers can interrupt your daily life. In this guide, we'll show you how to block unknown numbers on your Android smartphone, so you can avoid annoying calls and protect your peace of mind.

1. Using Android’s Built-In Call Blocking Feature

Most modern Android smartphones have a built-in feature to block calls. To use it, follow these steps:

  1. Open the Phone app on your device.
  2. Tap the three dots in the top right corner to open the menu.
  3. Select “Settings” or “Call Blocking”.
  4. Go to the “Block Unknown Numbers” section and turn on the toggle switch.

Now, any call from a number not saved in your contact list will be automatically blocked.

2. Using Third-Party Call Blocking Apps

If your smartphone doesn’t have a built-in option for blocking unknown numbers, you can use third-party apps from the Google Play Store. Here are some popular options:

  • Truecaller — A popular app for identifying unknown numbers and blocking spam calls.
  • Call Blocker — A simple and effective app for blocking unwanted calls.
  • Hiya — An app that automatically detects and blocks spam calls.

To use any of these apps, simply download and install it, then follow the on-screen instructions to set up call filtering.

3. Blocking Calls Through Your Mobile Carrier

Many mobile carriers offer their own call filtering and blocking services. For example, carriers like Verizon, AT&T, and T-Mobile provide anti-spam features. You can activate these services through your carrier’s mobile app or by contacting customer support.

4. Using “Do Not Disturb” Mode

Another way to limit calls from unknown numbers is by using the “Do Not Disturb” mode with customized call filtering:

  1. Open your phone’s Settings menu.
  2. Go to “Sound” or “Notifications”, then find the “Do Not Disturb” section.
  3. Enable the mode and set it to allow calls only from contacts in your phone book.

This way, any calls from unknown numbers will be blocked or sent to silent mode.