# #330*0000# on iPhone: Cancel All Call Barring URL: https://byshahid.com/blog/cancel-all-call-barring-hash-330-star-0000-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > #330*0000#: Clear every barring service on the line in one command. Service code 330 is the grouped identifier for all barring services in TS 22. 030 Annex B. Deactivating it clears outgoing, international, except home, incoming and roaming barring together, which makes it the reset button for the whole family. Replace 0000 with your call barring password. - **Code:** #330*0000# - **What it does:** Clear every barring service on the line in one command. - **Published for:** AT&T and T-Mobile - **Type:** Support varies Clear every barring service on the line in one command. This page explains what `#330*0000#` does, how to use it on an iPhone and which carriers it applies to. I build **Secret Codes: IMEI & Carrier**, a free iPhone app with 317 checked codes and guides, including this one. If you would rather tap than memorise, [get Secret Codes on the App Store](https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322). ## What does #330*0000# do? Service code 330 is the grouped identifier for all barring services in TS 22.030 Annex B. Deactivating it clears outgoing, international, except home, incoming and roaming barring together, which makes it the reset button for the whole family. Replace 0000 with your call barring password. The spec also permits an activation form, *330*password#, which would bar calls in both directions at once. There is essentially no good reason to send that from a phone you rely on, so it is deliberately not listed here as its own entry. Note that 330 is also the fixed identifier used when changing the barring password. ## How do I use #330*0000#? - Open the Phone app and tap Keypad. - Type #330*0000# exactly as written. - Press the green Call button and wait for the result. ## Which carriers does this apply to? | Published for | AT&T and T-Mobile | | Type | Support varies | | Good to know | The single most useful barring string if barring is provisioned at all, since it clears everything. Still returns an error on most US consumer lines. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related call barring and sim pin codes - [*#351#: Check Roaming Incoming Barring](/blog/check-roaming-incoming-barring-star-hash-351-iphone/) - [*#330#: Check All Barring Services](/blog/check-all-barring-services-star-hash-330-iphone/) - [#351*0000#: Cancel Roaming Incoming Barring](/blog/cancel-roaming-incoming-barring-hash-351-star-0000-iphone/) - [#333*0000#: Cancel All Outgoing Barring](/blog/cancel-all-outgoing-barring-hash-333-star-0000-iphone/) - [*351*0000#: Bar Incoming Calls While Roaming](/blog/bar-incoming-calls-while-roaming-star-351-star-0000-iphone/) - [*#333#: Check All Outgoing Barring](/blog/check-all-outgoing-barring-star-hash-333-iphone/) See all [call barring and sim pin codes](/blog/iphone-codes/call-barring-and-sim/) or [every category of iPhone codes](/blog/iphone-codes/). ## How Secret Codes helps Secret Codes keeps this and every other entry a search away. Pick your carrier once and each entry says whether it is published for your line. You can save favourites, add a private note, and record whether a code worked on your line. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What does #330*0000# do on iPhone? Clear every barring service on the line in one command. Service code 330 is the grouped identifier for all barring services in TS 22. 030 Annex B. ### What else should I know about #330*0000#? Deactivating it clears outgoing, international, except home, incoming and roaming barring together, which makes it the reset button for the whole family. Replace 0000 with your call barring password. The spec also permits an activation form, *330*password#, which would bar calls in both directions at once. ### What are the steps for #330*0000#? 1. Open the Phone app and tap Keypad. 2. Type #330*0000# exactly as written. 3. Press the green Call button and wait for the result. ### Where do I use #330*0000#? On the keypad of the Phone app. ### Do I need to press Call after typing #330*0000#? Yes. Type it on the Phone keypad, then press the green Call button. ### Is #330*0000# a hidden or secret code? No. It is a published service, not a hidden menu. iPhones do not have Android-style engineering menus. ### Which carriers does #330*0000# work on? It is published for AT&T and T-Mobile. The single most useful barring string if barring is provisioned at all, since it clears everything. Still returns an error on most US consumer lines. ### Does #330*0000# work on Android phones too? It is handled by the carrier or service rather than the iPhone, so it is not tied to one phone brand. Check with your carrier. ### Will #330*0000# work outside the US? It is published for US carriers and services, so do not count on it abroad. Ask your carrier before you travel. ### What if #330*0000# does not work on my iPhone? Check that it applies to your carrier first, because carriers decide which services they offer and can change them. If it should apply to your line, contact your carrier. ### What is related to #330*0000#? *#351#: Check Roaming Incoming Barring. See whether incoming calls are barred when you roam. ### What else is in this category? *#330#: Check All Barring Services. Interrogate every barring service at once. ## Sources - [3GPP TS 22.030: Man-Machine Interface of the phone](https://www.3gpp.org/dynareport/22030.htm)