Secret Codes guide
*#333# on iPhone: Check All Outgoing Barring
By Muhammad Shahid · · 3 min read
Quick answer
*#333#: Interrogate the three outgoing barring services in one query. A read only query against the grouped outgoing barring identifier. The reply covers barring of all outgoing calls, of outgoing international calls, and of outgoing international calls except to the home country. Faster than dialling the three interrogations separately, and it gives the same information when the network supports the grouped form.
Secret CodesDial codes, SIM & network test · Free on the App StoreDownload free →| Code | *#333# |
|---|---|
| What it does | Interrogate the three outgoing barring services in one query. |
| Published for | AT&T and T-Mobile |
| Type | Support varies |
Interrogate the three outgoing barring services in one query. This page explains what *#333# does, how to use it on an iPhone and which carriers it applies to.
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What does *#333# do?
A read only query against the grouped outgoing barring identifier. The reply covers barring of all outgoing calls, of outgoing international calls, and of outgoing international calls except to the home country.
Faster than dialling the three interrogations separately, and it gives the same information when the network supports the grouped form.
How do I use *#333#?
- Open the Phone app and tap Keypad.
- Type *#333# 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 | Harmless read only string. Some networks that answer the individual interrogations still reject the grouped one, so an error here is not conclusive. |
Related call barring and sim pin codes
- #333*0000#: Cancel All Outgoing Barring
- #353*0000#: Cancel All Incoming Barring
- *#330#: Check All Barring Services
- *#353#: Check All Incoming Barring
- #330*0000#: Cancel All Call Barring
- **03*330*0000*1234*1234#: Change the Call Barring Password
See all call barring and sim pin codes or every category of iPhone codes.
How Secret Codes helps
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Frequently asked questions
What does *#333# do on iPhone?
Interrogate the three outgoing barring services in one query. A read only query against the grouped outgoing barring identifier. The reply covers barring of all outgoing calls, of outgoing international calls, and of outgoing international calls except to the home country.
What else should I know about *#333#?
Faster than dialling the three interrogations separately, and it gives the same information when the network supports the grouped form.
What are the steps for *#333#?
1. Open the Phone app and tap Keypad. 2. Type *#333# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use *#333#?
On the keypad of the Phone app.
Do I need to press Call after typing *#333#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is *#333# 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 *#333# work on?
It is published for AT&T and T-Mobile. Harmless read only string. Some networks that answer the individual interrogations still reject the grouped one, so an error here is not conclusive.
Does *#333# 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 *#333# 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 *#333# 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 *#333#?
#333*0000#: Cancel All Outgoing Barring. Clear outgoing, international and except-home barring together.
What else is in this category?
#353*0000#: Cancel All Incoming Barring. Clear both incoming barring services in one command.
Sources
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