IPhone does not generate DTMF tones

Quite often after I have dialed the number and dealing with voice menu where I need to push buttons for various options, the phone fails to generate the tones. I press any number, the screen flashes briefly, but no tone is generated. Usually I am able to "fix" the problem by actions like turning on and off the speaker, or hiding and restoring the keypad - then suddenly it starts working and pushing the buttons generates the tones.

This is iOS 16.0 on iPhone 11 Pro Max

iPhone 11 Pro Max

Posted on Sep 29, 2022 10:11 AM

Reply
4 replies

Oct 1, 2022 11:15 AM in response to MSDORES

Hello MSDORES,


We'd like to provide you with a few steps that may help resolve the issue that you're having with DTMF tones:


Manually update your carrier settings 

1. Make sure that your device is connected to Wi-Fi or a cellular network.
2. Tap Settings > General > About.
3. Follow the onscreen instructions to install your carrier update.

If you insert a new SIM card into your iPhone or iPad, you need to download the carrier settings for your new carrier.

To see the version of carrier settings on your device, tap Settings > General > About and look next to Carrier. To see additional carrier information, tap the version number. To verify that you have the latest carrier settings installed, contact your carrier.


Update iOS on iPhone - Be sure to secure your data with a backup before proceeding.


If the issue persists, we suggest reaching out to your carrier for further assistance.


Best wishes!


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IPhone does not generate DTMF tones

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