Why does option 1 not work when making calls on iPhone?

When making a call I am often give a set of numbered options starting with the number 1, but if I choose option one it doesn’t work, but all the other numbers do. What is the problem and can it be fixed.



[Re-Titled by Moderator]

iPhone SE

Posted on Mar 26, 2025 3:29 AM

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Question marked as Top-ranking reply

Posted on Mar 30, 2025 8:56 AM

It sounds like your phone's DTMF (Dual-Tone Multi-Frequency) tones—which are used to communicate keypresses during calls—are not properly sending the "1" tone, or the system you're calling is not recognizing it.


Here are some possible reasons and fixes:

  1. Your Carrier or Network Issue
    1. Some carriers may have issues with transmitting certain DTMF tones.
    2. Fix: Try calling from a different phone or switching to a different network (e.g., using Wi-Fi Calling if available).
  2. iPhone DTMF Tone Settings (if using iPhone)
    1. Apple doesn't provide an option to change DTMF tone settings, but resetting network settings can help.
    2. Fix: Go to Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings.


1 reply
Question marked as Top-ranking reply

Mar 30, 2025 8:56 AM in response to priceiom

It sounds like your phone's DTMF (Dual-Tone Multi-Frequency) tones—which are used to communicate keypresses during calls—are not properly sending the "1" tone, or the system you're calling is not recognizing it.


Here are some possible reasons and fixes:

  1. Your Carrier or Network Issue
    1. Some carriers may have issues with transmitting certain DTMF tones.
    2. Fix: Try calling from a different phone or switching to a different network (e.g., using Wi-Fi Calling if available).
  2. iPhone DTMF Tone Settings (if using iPhone)
    1. Apple doesn't provide an option to change DTMF tone settings, but resetting network settings can help.
    2. Fix: Go to Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings.


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Why does option 1 not work when making calls on iPhone?

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