Secret Codes guide
*#332# on iPhone: Check Except-Home Barring
By Muhammad Shahid · · 3 min read
Quick answer
*#332#: See whether third country dialling is blocked while roaming. Interrogates barring of outgoing international calls except those to the home country. No password is needed and nothing is changed. Only worth dialling while actually roaming, since the service has no effect on the home network. A response listing basic service groups with a status of not active is a healthy answer.
Secret CodesDial codes, SIM & network test · Free on the App StoreDownload free →| Code | *#332# |
|---|---|
| What it does | See whether third country dialling is blocked while roaming. |
| Published for | AT&T and T-Mobile |
| Type | Support varies |
See whether third country dialling is blocked while roaming. This page explains what *#332# 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.
What does *#332# do?
Interrogates barring of outgoing international calls except those to the home country. No password is needed and nothing is changed.
Only worth dialling while actually roaming, since the service has no effect on the home network. A response listing basic service groups with a status of not active is a healthy answer.
How do I use *#332#?
- Open the Phone app and tap Keypad.
- Type *#332# 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 query. Errors on most US lines because the service was never provisioned. |
Related call barring and sim pin codes
- #332*0000#: Cancel Except-Home Barring
- *35*0000#: Bar All Incoming Calls
- *332*0000#: Bar International Calls Except Home
- #35*0000#: Cancel Incoming Call Barring
- *#331#: Check International Call Barring
- *#35#: Check Incoming Call Barring
See all call barring and sim pin codes or every category of 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.
Frequently asked questions
What does *#332# do on iPhone?
See whether third country dialling is blocked while roaming. Interrogates barring of outgoing international calls except those to the home country. No password is needed and nothing is changed. Only worth dialling while actually roaming, since the service has no effect on the home network.
What else should I know about *#332#?
A response listing basic service groups with a status of not active is a healthy answer.
What are the steps for *#332#?
1. Open the Phone app and tap Keypad. 2. Type *#332# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use *#332#?
On the keypad of the Phone app.
Do I need to press Call after typing *#332#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is *#332# 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 *#332# work on?
It is published for AT&T and T-Mobile. Harmless read only query. Errors on most US lines because the service was never provisioned.
Does *#332# 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 *#332# 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 *#332# 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 *#332#?
#332*0000#: Cancel Except-Home Barring. Restore full international dialling while roaming.
What else is in this category?
*35*0000#: Bar All Incoming Calls. Have the network refuse every incoming call to your line.
Sources
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