Secret Codes guide
#43*11# on iPhone: Turn Off Call Waiting for Voice Only
By Muhammad Shahid · · 3 min read
Quick answer
#43*11#: Disable call waiting for voice calls specifically. The deactivation counterpart, scoped to the telephony basic service group. Incoming calls arriving while you are already talking will no longer interrupt you, and depending on your forwarding setup they will either go to voicemail on busy or hear a busy tone. Worth knowing that call waiting and busy call forwarding interact.
Secret CodesDial codes, SIM & network test · Free on the App StoreDownload free →| Code | #43*11# |
|---|---|
| What it does | Disable call waiting for voice calls specifically. |
| Published for | AT&T and T-Mobile |
| Type | GSM networks |
Disable call waiting for voice calls specifically. This page explains what #43*11# 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 #43*11# do?
The deactivation counterpart, scoped to the telephony basic service group. Incoming calls arriving while you are already talking will no longer interrupt you, and depending on your forwarding setup they will either go to voicemail on busy or hear a busy tone.
Worth knowing that call waiting and busy call forwarding interact. With waiting on, the network offers you the second call first and only forwards it when you decline. Turn waiting off and busy forwarding takes effect immediately instead.
The Settings toggle at Phone then Call Waiting does the same thing and is easier to find, but the code is useful when the toggle is greyed out or fails to save.
How do I use #43*11#?
- Open the Phone app and tap Keypad.
- Type #43*11# 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 | GSM networks |
| Good to know | Works on GSM based US networks including AT&T, T-Mobile and their MVNOs. The change is stored in the network, so it follows your line rather than the handset. |
Related call barring and sim pin codes
- *43*11#: Turn On Call Waiting for Voice Only
- **04*0000*1234*1234#: Change Your SIM PIN
- *#300#: Check Calling Name Presentation
- **042*0000*1234*1234#: Change Your SIM PIN2
- **03*330*0000*1234*1234#: Change the Call Barring Password
- **05*12345678*1234*1234#: Unblock a SIM With the PUK
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 #43*11# do on iPhone?
Disable call waiting for voice calls specifically. The deactivation counterpart, scoped to the telephony basic service group.
What else should I know about #43*11#?
Incoming calls arriving while you are already talking will no longer interrupt you, and depending on your forwarding setup they will either go to voicemail on busy or hear a busy tone. Worth knowing that call waiting and busy call forwarding interact.
What are the steps for #43*11#?
1. Open the Phone app and tap Keypad. 2. Type #43*11# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use #43*11#?
On the keypad of the Phone app.
Do I need to press Call after typing #43*11#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is #43*11# a hidden or secret code?
No. It is a standard GSM code, handled by the network rather than by a hidden menu on the iPhone.
Which carriers does #43*11# work on?
It is published for AT&T and T-Mobile. Works on GSM based US networks including AT&T, T-Mobile and their MVNOs. The change is stored in the network, so it follows your line rather than the handset.
Does #43*11# work on Android phones too?
GSM codes are a network standard, so they generally behave the same on any phone on a network that supports them.
Will #43*11# work outside the US?
It depends on the network you are on. GSM codes are a standard, but each network decides which it supports.
What if #43*11# 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 #43*11#?
*43*11#: Turn On Call Waiting for Voice Only. Enable call waiting for telephony while leaving other services alone.
What else is in this category?
**04*0000*1234*1234#: Change Your SIM PIN. Replace the PIN that unlocks your SIM at startup.
Sources
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