Android has three built-in ways to block calls, plus options from your carrier

Your Android phone can block calls directly through the Phone app, through your contacts, or through a Do Not Disturb mode that silences specific callers. Which method you use depends on whether you want to block one person permanently, manage calls from a group, or silence calls during certain hours. You do not need to download anything — these tools are already on your phone.

The simplest route is blocking through the Phone app itself, which takes about 10 seconds and stops that number from calling or texting you. If you want more control — like blocking calls but allowing texts, or silencing calls only at night — Android offers other built-in options that work differently.

Key Takeaways

  • The Phone app's block feature is the fastest way to stop a specific number from calling or texting you, and you can unblock it anytime.
  • Do Not Disturb mode lets you silence calls from everyone except people in your contacts, or from specific contacts only, without blocking anyone permanently.
  • Your carrier (Verizon, AT&T, T-Mobile, etc.) offers its own call-blocking service, which works even if the caller spoofs their number.
  • Blocking through your contacts app lets you block a number when you save it, or block an existing contact later.
  • Blocked callers can still leave voicemail on most Android phones, and they will not know they are blocked unless they try calling and hear nothing.

Blocking a number through the Phone app

Open the Phone app and go to the Recent Calls tab (the clock icon at the bottom). Find the number you want to block, press and hold it, and tap "Block number" from the menu that appears. The number is now blocked — that caller cannot reach you by phone or text, and their calls go straight to voicemail.

To unblock the number later, go back to Recent Calls, find the number, press and hold it, and tap "Unblock number". You can block as many numbers as you want this way, and there is no limit.

If the number does not appear in your recent calls yet, you can also block it by opening the Phone app, tapping the three dots at the top right, selecting "Settings", then "Blocked numbers", and typing in the number manually. This is useful if someone has not called you yet but you want to block them preemptively.

Using Do Not Disturb to silence calls from unknown numbers

Do Not Disturb mode silences calls and notifications, but you can set it to allow calls from your contacts only. This is different from blocking — the calls still come through, but your phone does not ring or vibrate. Open Settings, go to "Sound and vibration" or "Notifications", and find "Do Not Disturb". Tap it and choose "Allow calls from contacts" or "Allow calls from favorites".

You can also set Do Not Disturb to turn on automatically at certain times. Go to the same menu, tap "Schedules", and set the hours you want it active — for example, 9 p.m. to 7 a.m. During those hours, only calls from your saved contacts will make your phone ring.

Do Not Disturb does not block anyone; it just silences your phone. The caller hears it ring normally on their end, and if they leave a voicemail, you will see it in your voicemail app. This is useful if you want to avoid calls during work or sleep without permanently blocking anyone.

Blocking a contact you have already saved

If the number is already in your contacts, you can block it from there. Open the Contacts app, find the person, tap the three dots at the top right, and select "Block number". You can also open the contact, scroll down, and look for a "Block" option — the exact location varies by phone model and Android version.

Blocking through Contacts works the same way as blocking through the Phone app: the person cannot call or text you, and their calls go to voicemail. The difference is just where you start the action.

Using your carrier's call-blocking service

Verizon, AT&T, T-Mobile, and other carriers offer their own call-blocking tools, separate from what is built into Android. These services can block calls even when the caller spoofs their number (makes it look like it is coming from a different number), which Android's built-in blocking cannot always catch.

Verizon offers Call Filter (free basic version, paid version with more features). AT&T offers Call Protect. T-Mobile offers Scam Shield. You can turn these on through your carrier's app or website, or by calling customer service. Each service works slightly differently, so check your carrier's website for instructions specific to your account.

Carrier-level blocking is useful if you are getting a lot of spam or robocalls, because it catches more of them than your phone alone can. However, it does not block individual numbers you know — for that, your phone's built-in blocking is faster and easier.

What happens when you block someone

When you block a number on Android, that person cannot call you or send you text messages. Their calls go straight to voicemail, and their texts do not appear in your Messages app. However, they will not receive a notification saying they are blocked — they will just hear the phone ring (or go to voicemail) as if you did not answer.

Blocked callers can still leave voicemail on most Android phones, and you will see those voicemails in your voicemail app if you want to listen to them. If you want to prevent them from leaving voicemail too, that option varies by carrier and is not available on all phones.

Blocking is not permanent. You can unblock a number anytime by going back to the Phone app, finding the number in your blocked list, and tapping "Unblock". There is no waiting period or confirmation step — it takes effect immediately.

Managing multiple blocked numbers

If you have blocked several numbers and want to see them all in one place, open the Phone app, tap the three dots, go to "Settings", and select "Blocked numbers". This shows every number you have blocked on your phone. From here you can tap any number to unblock it, or add new numbers to block manually.

Some Android phones also let you block by contact group. For example, you could block all calls from a certain group of contacts at once, though this is less common and depends on your phone model. Check your Phone app settings to see if this option is available on your device.

Frequently Asked Questions

Can someone tell if I blocked them?

No. They will hear the phone ring and then go to voicemail, just as if you did not answer. They will not receive a message saying they are blocked. However, if they call repeatedly and always get voicemail, they may suspect it.

Will blocked people still be able to text me?

No. When you block a number on Android, texts are blocked along with calls. Their messages will not appear in your Messages app, and they will not know whether their texts went through.

Can I block calls but still receive texts from someone?

Not with Android's built-in blocking — it blocks both calls and texts together. However, you can use Do Not Disturb mode to silence calls from unknown numbers while still receiving texts from anyone. For more granular control, some third-party apps offer this feature, though built-in options are usually sufficient.

What if I block someone by accident?

Open the Phone app, go to Settings, select "Blocked numbers", find the number, and tap it to unblock. It takes effect immediately, and they can call you again right away.

Does blocking work if someone calls from a different number?

Yes, but only if they call from a number you have already blocked. If they call from a new number each time, Android's built-in blocking cannot stop them. Your carrier's call-blocking service (like Verizon Call Filter or AT&T Call Protect) is better at catching these spoofed calls, because it analyzes the call pattern rather than just the number.