What restricted calls are and why you might want to block them

A restricted call is one where the caller has hidden their phone number from your display — you see "Restricted," "Unknown," "Private," or "Blocked" instead of a number. These calls come from people who deliberately withheld their caller ID, either through their phone settings or their carrier's service.

Restricted calls are not the same as spam or robocalls, which often show a number (real or spoofed). Someone calling restricted might be a telemarketer, a debt collector, a business using a private line, or someone you know who prefers anonymity. If you receive many restricted calls and do not want to answer them, you can block them at the phone level, through your carrier, or both.

Key Takeaways

  • Most phones let you block all restricted calls directly in settings, usually under "Call Blocking" or "Do Not Disturb" — no app or carrier involvement needed.
  • iPhone users can silence unknown callers, which sends restricted calls to voicemail without blocking them entirely.
  • Your carrier (Verizon, AT&T, T-Mobile, etc.) offers call-blocking tools that work at the network level and may cost extra or be included free.
  • Blocking restricted calls means you will miss any legitimate calls from people using restricted numbers, such as some hospitals or government offices.
  • Third-party apps can block restricted calls but require permission to access your call history and contacts.

Blocking restricted calls on iPhone

iPhone offers two ways to handle restricted calls. The first is Silence Unknown Callers, which sends calls from numbers not in your contacts to voicemail without ringing your phone. This does not block the calls — they still reach your voicemail — but you will not be interrupted.

To turn on Silence Unknown Callers: open Settings, tap Phone, scroll to Silence Unknown Callers, and toggle it on. This affects all unknown numbers, not just restricted ones, so you may miss calls from businesses or people calling from new numbers.

The second option is to block specific numbers after they call. When a restricted call comes in, let it go to voicemail, then open the Voicemail tab, find the call, tap the info icon (i), and select Block This Caller. This blocks that specific caller but does not block all restricted calls — you would need to repeat the step for each one.

Blocking restricted calls on Android

Android phones vary by manufacturer and carrier, but most let you block unknown or restricted numbers in the Phone app settings. Open the Phone app, tap the three-dot menu, go to Settings, then Call Blocking or Block Numbers. Look for an option to block unknown, private, or restricted numbers — the exact wording depends on your phone model.

Samsung phones specifically have a Reject Calls option in the Phone app settings. Open Phone, tap the three-dot menu, select Settings, then Reject Calls, and toggle on Reject Unknown. Google Pixel phones have a similar feature called Call Screen, which you can access in the Phone app settings under Spam and Call Screen.

If your phone does not have a built-in option, you can block individual restricted callers after they call. Open the Phone app, find the restricted call in your recent list, press and hold it, and select Block Number or Block This Caller.

Using your carrier's call-blocking service

Your phone carrier offers network-level call blocking that works before calls reach your phone. These services are often free or cost a few dollars per month, depending on the carrier and the features you choose.

Verizon offers Call Filter, which blocks spam and scam calls. The free version identifies suspected spam; the paid version ($3.99 per month) also blocks calls and texts. You can add restricted calls to a personal block list through the Call Filter app or online account.

AT&T offers Call Protect, which is free for basic spam blocking and $3.99 per month for advanced features including the ability to block restricted calls. You manage settings through the AT&T mobile app or online account.

T-Mobile includes Scam Shield for free, which blocks known spam and scam calls. You can upgrade to Scam Shield Premium ($3.99 per month) to block restricted calls and get more detailed call reports. Manage it through the T-Mobile app.

Other carriers like US Cellular, Boost Mobile, and regional carriers have their own blocking services — check your carrier's website or call customer service to learn what is available and whether there is a cost.

Using third-party call-blocking apps

Apps like RoboKiller, Nomorobo, and Whoscall can block restricted calls, but they require access to your call history, contacts, and sometimes your location. Before installing any app, read the permissions it requests and the privacy policy to understand what data it collects.

Most third-party apps work by filtering calls before they reach your phone, similar to carrier services. Some are free with ads; others charge a monthly fee. If you already use your phone's built-in blocking or your carrier's service, a third-party app may be unnecessary — test the free options first.

What happens when you block restricted calls

When you block all restricted calls, callers with hidden numbers will not reach you. Depending on how you block them, they may hear a message that the number is not in service, or the call may go straight to voicemail. You will not see a missed call notification.

The downside is that some legitimate callers use restricted numbers. Hospitals, government offices, and some businesses may call with restricted caller ID for privacy or security reasons. If you block all restricted calls, you may miss important calls from these sources. Consider whether the benefit of blocking unwanted calls outweighs the risk of missing legitimate ones.

Frequently Asked Questions

Can I block restricted calls but still receive calls from specific numbers?

Not directly — if you block all restricted calls at the phone or carrier level, you block all of them. Your best option is to ask callers you want to reach to unblock their number so it displays, or to use your phone's built-in blocking only for individual callers after they call you.

Will the caller know I blocked them?

No. The caller will hear a message that the number is not in service or the call will go to voicemail, but they will not receive a notification that you blocked them. Blocking is silent on your end.

Do I need to pay my carrier to block restricted calls?

No. Your phone's built-in blocking is free. Carrier services like Verizon Call Filter and AT&T Call Protect offer free basic versions, though advanced features that include restricted call blocking may cost $3 to $4 per month.

What is the difference between blocking restricted calls and silencing unknown callers?

Silencing unknown callers (iPhone) sends them to voicemail without ringing your phone — you can still listen to the message later. Blocking restricted calls prevents them from reaching you at all. Blocking is more complete but riskier if you might need to receive legitimate restricted calls.

Can I unblock restricted calls if I change my mind?

Yes. On your phone, go back to the blocking settings and turn off the restricted call block. If you blocked through your carrier, log into your account or call customer service to remove the block. Individual blocked numbers can be unblocked the same way you blocked them.