"Private Number" and "Private Caller": What It Means on Android and Home Phones, and What to Do

"Private Number", "Private Caller" or just "Private" means the person calling blocked their number before dialing. It is the Android and landline wording for the call an iPhone shows as "No Caller ID". The number did reach your carrier; the caller's privacy flag stops it from reaching you. Here is who calls that way, how the rule works, how to block or screen private calls on each kind of phone, and how to make your own number private when you need to.

Updated 2026-11-07 · By Andrew Pickett, OmegaIT

What a private call is

Every call carries the caller's number through the network, and the caller can attach a request that it not be shown. Dialing *67 before the number does it for one call; a setting on the phone or a block on the line does it for every call. The FCC's rules give that request teeth. Carriers must honor *67, no carrier may override the privacy indicator, and your own carrier "may not reveal that caller's number or name" or use it to connect you to the caller (47 CFR 64.1601(b)). Your phone is handed a call with a number it is not permitted to see, and labels it accordingly: "Private number" in Google's Phone app, "Private Caller" or "Private" on many Android phones and carriers, "P" or "Private" on a home-phone display, "No Caller ID" on an iPhone, and "Anonymous" or "Blocked" on some systems. Verizon's description of its own *67 service says it directly: "The word 'Private' or 'P' will appear on the display unit of the called party" (Verizon).

Three neighbors of the label are easy to confuse with it. "Restricted" is usually the same thing in different words, the network's "presentation restricted" flag shown literally, though some business phone systems set it on every outbound call. "Unknown", "Unavailable" and "Out of Area" are the opposite case: no usable number arrived, nothing was blocked. And a plain number with no name is simply a number nobody has looked up; it can be checked with a reverse lookup, which a private call cannot.

Who calls from a private number

Anyone with a reason to keep a personal number out of circulation: doctors and nurses calling patients back, social workers, shelters, teachers calling parents from their own phones, journalists, people in disputes with the person they are calling. Organizations do it by policy so that returned calls go to a switchboard. Some phones are set to hide the number by default from an old account setting the owner has forgotten about. The FCC treats the choice as legitimate and even forbids carriers from charging for it; its spoofing guide notes that blocking your own number "is not spoofing" (FCC).

One group is excluded by law. Telemarketers must transmit caller identification and are "prohibited from blocking the transmission of caller identification information" (64.1601(e)); they must also show a number you can call during business hours to ask not to be called. A sales call from a private number is therefore unlawful on its face, and worth reporting to the FTC at DoNotCall.gov with the time and date. In practice most bulk robocallers do the opposite and display a spoofed number, usually one with your own area code, because people answer local numbers; the FTC Do Not Call complaint data this site imports is filed entirely against displayed numbers, and 74% of the 754,119 complaints filed between July 24 and November 6, 2026 that answered the question described a recorded message. Private-number calls are a small part of the spam problem and a larger part of the harassment problem, which has its own remedy: Call Trace.

How to block private calls

Android with Google's Phone app: open the Phone app, tap More > Settings > Blocked numbers and turn on Unknown. Google is specific about what that covers: it "will block calls from private or unidentified numbers", while you "will still receive calls from phone numbers that are not stored in your contacts" (Google). Blocked callers are declined automatically and, with visual voicemail on, cannot leave voicemail.
Samsung Galaxy: Phone app > More (three dots) > Settings > Block numbers > Block unknown/private numbers (Samsung).
iPhone: there is no per-label block, but Settings > Apps > Phone > Screen Unknown Callers set to Silence sends calls from any number not in your contacts to voicemail, and Ask Reason for Calling screens them first (Apple). See the No Caller ID page for the iPhone side in detail.
Home phone or home VoIP: dial *77 to turn on Anonymous Call Rejection and *87 to turn it off. Callers who have blocked their number hear an announcement telling them to unblock it and call again; it leaves "Unavailable" and "Out of Area" calls alone (Verizon). Cable and fiber phone services usually offer the same feature under Anonymous Call Rejection or Block Anonymous Calls in the account settings.
AT&T wireless: the ActiveArmor app lists "Private calls" among the nuisance-call categories you can allow, flag, send to voicemail or block (AT&T).

If the private calls are threatening or persistent rather than merely unwanted, dial *57 (Call Trace) on a landline immediately after the call. The carrier records the caller's number for law enforcement, never for you; charges and the number of traces needed to open a case vary by state (Verizon). The FCC rule that protects private callers explicitly stops protecting them once law enforcement reports a threatening call (64.1601(f)).

How to make your own number private

For one call, dial *67 and then the number; the recipient sees Private, No Caller ID or Blocked and your number is withheld for that call only. For every call from an Android phone, open the Phone app and look under Settings > Calling accounts (or Supplementary services, depending on the maker) > Caller ID, and choose Hide number. On an iPhone, Settings > Apps > Phone > Show My Caller ID, turned off; if the switch is missing or dimmed, the carrier controls it (Apple). To show your number for a single call from a blocked line, dial *82 first.

The limits are the same ones that protect you. Your number is always delivered to 911 and to toll-free numbers, because the called party pays for the call and receives the billing number regardless of the privacy flag. People who have Anonymous Call Rejection or Silence Unknown Callers on will not receive your call at all. And if you are calling on behalf of a business to sell something, the privacy option is not available to you by law.

Sources

Got a call from an unknown number?

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FAQs

What does Private Number mean when someone calls?

The caller blocked their number, with *67 or a setting on their phone or line. Your carrier received the number but FCC rules forbid it from showing it to you. It is the same call an iPhone labels No Caller ID.

Can I block private numbers on Android?

Yes. In Google's Phone app, More > Settings > Blocked numbers > Unknown blocks private and unidentified numbers while still allowing calls from numbers not in your contacts. On Samsung phones it is Phone > Settings > Block numbers > Block unknown/private numbers.

Is a private number call a scam?

Usually not. Blocking a number is legal and common among clinics, agencies and people protecting a personal number, and telemarketers are forbidden to do it. Bulk robocallers generally display a spoofed local number instead. Let a private call go to voicemail; a genuine caller leaves a message.

Can I find out who a private number was?

Not from your phone or your carrier, which may not reveal a blocked caller's number or name. For threatening or harassing calls, dial *57 on a landline right after the call; the trace record goes to law enforcement. Toll-free numbers are the one exception to blocking because the called party pays for the call.

How do I make my own calls private?

Dial *67 before a number for one call, or turn on Hide number in your Android Phone app's caller ID setting or turn off Show My Caller ID on an iPhone for every call. Your number is still sent to 911 and toll-free numbers, and people who reject anonymous calls will not receive yours.