Open Settings > Phone > Show My Caller ID, switch it off; use *67 or #31# for one-off calls.
Hiding your number on iPhone is simple once you know where Apple hides the switch and which carrier codes still work. Below you’ll find fast steps, a quick table, and fixes when the toggle isn’t there. The goal is the same each time: place a call that shows “Private,” “Blocked,” or “Unknown” to the person you dial.
Block Caller ID On iPhone: Quick Methods And Rules
Quick check: If you want every outbound call to hide your number, use the built-in iOS setting. If you want only a single call hidden, use a prefix code before the number. Apple documents the system toggle, while carriers document the dialing codes and any limits.
| Method | How | Where It Works / Notes |
|---|---|---|
| Device-wide hide | Settings > Phone > Show My Caller ID > Off | Carrier must allow the toggle; some remove it or manage it on your account. |
| Per-call hide (US carriers) | Dial *67 + number | Supported by AT&T, Verizon, T-Mobile; not for toll-free or emergency numbers. |
| Per-call hide (GSM code) | Dial #31# + number | Common on many GSM networks (Canada, AU, others). Your carrier decides support. |
| Account-level block | Turn on Caller ID Blocking in your carrier account/app | Carrier tools can force “Private” on all calls; you can still unhide per call with *82 or *31#. |
How Can I Block Caller ID On My iPhone?
This section uses the built-in iOS switch. It’s the cleanest method when it’s available on your line.
- Open Settings — Tap the grey gear icon.
- Tap Phone — Scroll to the Phone app settings.
- Open Show My Caller ID — Wait for the page to load.
- Turn It Off — Calls you place now present as private on supported networks.
Apple notes that some carriers remove this option entirely; in that case, you’ll need the carrier to flip it for your line or use per-call codes.
Per-Call Blocking Codes That Work
One-off call: When you only need privacy once, add a short code before the number you dial. This keeps your default caller ID behavior unchanged for the next call.
- Use *67 in the US — Dial *67 then the 10-digit number. The recipient sees “Private,” “Blocked,” or similar. AT&T, Verizon, and T-Mobile document *67 support.
- Use #31# on many GSM networks — Dial #31# then the number. This is published by carriers like Bell and Telstra.
- Know the limits — Codes won’t hide you when calling toll-free numbers or emergency services; some businesses also reject anonymous calls. Carrier pages and guides note those carve-outs.
Fast tip: Save a contact with the prefix in front of the number when you ring a place routinely and want privacy each time. Many users keep two entries: one normal and one prefixed.
When The Toggle Is Missing Or Grayed Out
If Show My Caller ID never appears or won’t load, that setting may be locked by your carrier at the network level. Apple’s guide calls out this carrier control explicitly; Apple Support Communities and carrier pages echo the same point.
- Check your plan — Some prepaid or business lines hide the toggle; Caller ID control lives in the account portal instead. Verizon and AT&T outline account tools for Caller ID block on eligible lines.
- Ask the carrier to enable the feature — Support can add network-side Caller ID blocking or restore the device toggle when your plan allows it. Verizon and AT&T list Caller ID Block and related features in their help hubs.
- Use per-call codes meanwhile — *67 or #31# work even when the system toggle is missing, subject to each carrier’s rules.
Extra Privacy Moves While Calling
Hiding your number solves one angle. These iPhone settings help you manage inbound calls tied to your identity and cut interruptions during private work.
- Silence Unknown Callers — Settings > Phone > Silence Unknown Callers. Calls from numbers not in Contacts, Mail, or Messages go to voicemail with a silent ring. Apple documents the behavior and path.
- Screen Unknown Callers — On newer iOS builds, turn on Ask Reason for Calling in Phone settings to screen callers and read a short transcript before you pick up. News coverage highlights availability and early quirks.
- Use carrier spam filters — Verizon Call Filter, T-Mobile tools, and AT&T options cut spam while leaving your outbound privacy choices intact.
Troubleshooting And Safe Use Tips
Deeper fix: If calls show your number even after you switched the setting off, reboot the phone, toggle Airplane Mode, then try again. If nothing changes, contact the carrier and ask them to confirm Caller ID block on your line. Apple’s materials also point to carrier control over this feature.
- Test with a second phone — Place two short test calls: one normal, one with *67 or #31#. Check the display on the receiving phone.
- Avoid toll-free and emergency numbers for tests — Those numbers may ignore blocking. Carrier pages note exclusions for anonymous calls.
- Know that unmasking services exist — Some third-party services can reveal caller info from blocked calls by routing through special numbers. That means caller ID blocking offers privacy, not secrecy.
- Keep compliance in mind — Rules differ by country and carrier. Business accounts may have logging that still records your identity inside the company system.
Quick recap: If you came here asking, “How can I block caller ID on my iPhone?”, you have three reliable paths: the iOS Show My Caller ID switch, the *67 or #31# one-off codes, and carrier account toggles for line-wide blocking. Pick the level that matches your need and test once before any sensitive call.
FAQ-Free Cheatsheet You Can Save
- Hide every call fast — Settings > Phone > Show My Caller ID > Off.
- Hide just one call — Dial *67 + number (US) or #31# + number (many GSM carriers).
- Toggle missing — Ask the carrier to turn Caller ID Block on for your line, or use per-call codes.
- Quiet unknown callers — Turn on Silence Unknown Callers or try Apple’s call screening options.
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