How to block a number on your smartphone or landline to stop spam calls and texts

  • You can block a number to stop receiving all incoming calls or texts from that phone number.
  • To block a number on an iPhone or Android, you can use your device’s Phone app.
  • To block a number on a landline, contact your service provider or use a call-blocking device.

Tired of being asked about renewing your car’s warranty? Blocking phone numbers is one way to stop spam calls and spam texts and receive fewer robocalls or unknown callers.

To block a number, you’ll have to follow a slightly different process on an iPhone, an Android, or a landline. Here’s how to do each.

Note: If you want to block your own number and hide your caller ID when calling others, type *67 before the phone number you’re dialing. Table of Contents: Masthead Sticky

How to block a number on an iPhone

You can block a number on your iPhone via the call log in your Phone app, or through your Messages app.

Likely the most convenient method: In your Phone app, go into your recent calls and tap the icon that looks like an “i” inside a circle next to the call from the number you’re looking to block. On the next screen, select “Block this Caller.”

Select “Block this Caller.”Devon Delfino/Insider

Once you’ve blocked someone, you won’t receive further communication from that number via Apple’s communication apps; calls, texts, and FaceTime requests will be blocked. (They can still leave a voicemail, but it will be hidden from your view.)

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However, the blocked number could still contact you through third-party apps.

Also, any blocked person won’t be notified of the block. That said, there are ways to check if you’ve been blocked on an iPhone, though they aren’t definitive.
Quick tip: You can view your blocked iPhone contacts on several different app screens.

Alternatively, instead of directly blocking a private number (like a robocall), you can choose to set up “Do Not Disturb” mode so that you only get calls from people in your contacts list.

If you want to unblock a number on your iPhone, go into your recent call list on your Phone app, find the person or number you want, tap the “i” icon next to the name or number, and on the next screen tap “Unblock this Caller.”

How to block a number on Android

To block a number on an Android, go into the Phone app and tap the three dots in the top-right corner, select “Settings,” then tap “Blocked numbers” and add a number to the list.

How to block a number on your smartphone or landline to stop spam calls and texts
You can Add a Number or block all Unknown numbers.Abbey White/Insider

Or, you can block numbers via the messages app, though the exact process will depend on your device. Either way, they won’t be notified and they won’t know for sure that you’ve blocked them, even if they try to find out if they’ve been blocked.

Variance is pretty common among Android devices, and blocking private or unknown numbers is another instance where the process may vary depending on your device. For example, if you have a Samsung Galaxy S10, you can block all of those unknown calls via the settings in your Phone app.

Note: When you block a number on a Galaxy S10, you won’t get calls or texts from them anymore, but you retain the option to call or text them.
If that isn’t setting isn’t an option for your device, though, you can still block those calls on a case-by-case basis, using the three-dot method listed above.

If you want to unblock a number on Android, you can do so via the blocked numbers list in your Phone app.

How to block a number on a landline

To block someone via a landline phone, you have to contact your service provider or use a call-blocking device. It’s also a good idea to add your number to the National Do Not Call Registry.
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