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Short answer: iPhone dictation does not work during a phone call because the call is using the microphone, and iOS gives a live call priority. The mic key is dimmed or does nothing until you hang up. Type or swipe during the call, then dictate as soon as it ends.

Free to start Dictate into any app on your Mac or iPhone — hold a key, speak, release. Download for MaciPhone

You are on a call, the phone is on speaker, and the person at the other end starts reading out an address, a reference number, or a list of things you have just agreed to do. You open Notes or Messages, tap the microphone key to dictate it, and the key is dimmed. Or it looks normal and tapping it does nothing. Five minutes earlier it worked perfectly.

Nothing is broken. An iPhone gives its microphone to one job at a time, and a live call comes first. While the call is connected, the call has the microphone and dictation has to wait. That is true on speaker, on earbuds, in the car, and when you are muted. It is true for Apple's dictation and for every third-party dictation keyboard, ours included.

So this guide comes in two halves. The first is about what you can do during the call, since dictation is off the table until you hang up. The second is for the more confusing case, where the call is over, or you thought it was, and dictation still will not start. If dictation is failing all the time, with no call involved, start with our full guide to iPhone dictation not working.

Why a call blocks dictation

Dictation works by listening to the microphone and turning what it hears into text. During a call, the phone's audio is set up for a different purpose: your voice goes to the other person, and theirs comes back to you. iOS treats that as the priority and does not let the keyboard listen in on top of it. It also means a keyboard never ends up transcribing someone else's side of a conversation into whatever text field happens to be open.

The rule covers more than the Phone app:

What you see varies with your iOS version and the keyboard you use. The microphone key may be dimmed, it may be missing, or it may appear to start listening and then return nothing. All three mean the same thing: the call has the microphone.

The 10-second check: is a call still live?

Before changing any settings, find out whether the phone thinks it is on a call.

If either one says a call or a recording is live, that is your cause, and fixes 1 to 4 are for you. If the screen is clear and dictation still fails, skip to fix 5.

The 8 fixes, in order

1. During the call, type or swipe

We will start with the honest answer. No setting in iOS, in the Phone app or in any keyboard changes which app holds the microphone during a call. If the mic key does not respond while you are connected, stop tapping it and use your thumbs.

2. Do not rely on mute or hold

Muting yourself stops the other person hearing you. It does not hand the microphone to the keyboard, because the call is still connected. Putting the call on hold is not something to rely on either. The only thing that reliably frees the microphone is ending the call.

If what you need to capture has to be exact, such as a postcode, an account number or an email address, there is a better option than any kind of typing: ask the other person to send it to you in a message. It takes them a few seconds and removes the chance of a mistake.

3. Keep the call on one device and write on another

A call only holds the microphone of the device it is running on. If there is a Mac or an iPad within reach, its microphone is free.

4. If you want the call itself in writing, that is a different feature

Dictation writes what you say into a text field. It was never going to produce a record of both sides of a call. If that is what you are after, look at two other things.

Rules about recording calls differ from place to place, so check what applies to you and tell the other person before you record.

5. The call has ended, but the mic key is still dimmed

Start by making sure the call really is over.

If everything has ended and the key is still grey, the keyboard is showing a stale state. Tap outside the text field to dismiss the keyboard, then tap back in. If that does not clear it, close the app from the app switcher and reopen it, and if that fails, restart the iPhone.

6. Dictation starts after the call, but hears nothing or gets it wrong

Calls are often taken on earbuds or through a car, and the audio does not always come back to the phone when the call ends. Dictation then listens through a headset microphone that is in your pocket or already back in its case, or through a car system you have just walked away from.

7. It was never the call: dictation is off or restricted

If dictation fails with no call and no orange dot, check the basics.

8. A third-party keyboard needs its permissions, and sometimes a nudge

A dictation keyboard depends on two permissions that Apple's keyboard does not need.

If both are in place and the keyboard's mic button does not respond straight after a call, switch to another keyboard and back with the globe key, or open the keyboard's own app once and return to what you were writing. A call interrupts anything else that was using audio, and this gets it going again.

Call quirks that look like broken dictation

Quick triage

Where voice earns its place around a call

Most people speak at around 130 to 150 words per minute. The average adult types at about 40 on a full keyboard, and few people enjoy writing three paragraphs with their thumbs. A call produces more text than people expect: what was agreed, who is doing what, the date, the follow-up message, and the entry in whatever system keeps track of your work.

None of that has to be written while the call is live. The pattern that works is simple:

  1. Before the call, dictate your questions and the points you want to cover, so they are in front of you when the conversation starts.
  2. During the call, swipe or type keywords only.
  3. As soon as you hang up, dictate the full note while it is fresh: who you spoke to, what was decided, what happens next and by when. Then dictate the follow-up message.

The minutes straight after a call are when you remember it best, and speaking is the fastest way to use them. A note dictated then tends to be longer and more useful than anything typed one-handed while the other person was still talking.

A keyboard that covers both halves

Apple dictation is free and built in, but it depends on a system setting that is easy to switch off, it stops after a pause, and fixing a misheard word on a phone means placing a cursor with your thumb.

Voice Keyboard Pro is a custom iPhone keyboard with a built-in mic button for dictation in any iOS app. Tap into Notes, Messages, Mail or your CRM app, tap the mic, speak, and the text appears in the field, ready to review. It never sends anything for you.

We will be straightforward about its limits. During a live call the call has the microphone, and that applies to every dictation keyboard, ours included. What the keyboard gives you is a sensible fallback during the call and a faster tool for everything around it:

Setting it up takes a minute: add the keyboard in Settings, then allow Full Access so that it can reach the transcription service. On privacy, our servers store only operational pings. No audio and no transcript content is stored. There is a free tier with daily limits, and Pro is $4.99 a month or $34.99 a year.

On Mac, Voice Keyboard Pro is a menu bar app: hold a hotkey, speak, release, and the text appears at your cursor in any app. It also has Meeting Mode with speaker detection and AI notes, and calendar meeting detection, which suits the calls you take at a desk.

Frequently asked questions

Why is the microphone key greyed out during a phone call?

The call is using the microphone, and iOS gives a live call priority over dictation. The key comes back when the call ends. No setting changes this.

Can I dictate while the call is on speaker or on AirPods?

No. Speaker, earbuds and the car change where the sound goes. They do not change the fact that the call has the microphone.

Does muting the call let me dictate?

No. Mute stops the other person hearing you, but you are still connected to the call's audio, so dictation still cannot start.

Will a different keyboard app let me dictate during a call?

No. The rule is set by iOS and applies to every keyboard, including Voice Keyboard Pro. Type or swipe during the call and dictate afterwards.

Why is dictation still not working after I hung up?

Check for a second call, a call still running through the car or another device, or an app showing the orange dot. Then dismiss and reopen the keyboard, and check that audio is not still routed to a headset.

Can my iPhone write down what the other person says?

Not through dictation. On recent iOS versions, in supported regions and languages, the Phone app can record a call and save a transcript to Notes, with an announcement to everyone on the call.

Does this happen on FaceTime and WhatsApp calls too?

Yes. Any live call or meeting that is using the microphone has the same effect, whichever app it is in.

What to do next

Look at the top of the screen. If there is a green call indicator, the call has the microphone, and the answer is to type or swipe keywords now and dictate the full note the moment you hang up. If the call is over and the key is still grey, check for a second call or an orange dot, dismiss the keyboard and bring it back, and make sure the audio has returned from your earbuds or the car. If there is no mic key at all, with or without a call, dictation is switched off or restricted in Settings.

If you would like swipe typing for the call and a mic button for the minute after it on one keyboard, Voice Keyboard Pro has a free tier. Add the keyboard, allow Full Access, and dictate your next call note as soon as you hang up.

Voice Keyboard Pro
Hold your key · Speak · Release

The words land at your cursor in whatever app you are already in: Notes, Messages, Mail, a browser form. No dictation window, nothing to copy across.

Free tier with daily limits · Apple Silicon & Intel