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.
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:
- Ordinary mobile calls and Wi-Fi calls.
- FaceTime, audio or video.
- Calls and meetings in apps such as WhatsApp, Messenger, Zoom and Microsoft Teams.
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.
- Look at the top of the screen. A call in progress shows as a green indicator around the time, as a call timer in the Dynamic Island, or as a green bar across the top on older iPhones. Tap it and you are taken back to the call.
- Look for the orange dot. iOS shows an orange dot at the top of the screen whenever an app is using the microphone. Open Control Centre and the name of that app is shown at the top.
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.
- Swipe instead of tapping. Sliding one finger across the letters is the quickest way to write with one hand while the other holds the phone.
- Write keywords, not sentences. During the call you only need enough to jog your memory: the name, the number, the date. The full note can wait two minutes.
- Set up text replacements for the messages you send mid-call. In Settings > General > Keyboard > Text Replacement, you can make a short code expand into a full line such as "On a call, I will ring you back shortly."
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.
- Keep the call on your iPhone and take notes on the Mac. Dictation on the Mac works as normal while the phone is busy.
- Use earbuds for the call if you can. With the phone on speaker, the Mac's microphone hears the other person as well as you, and their words can end up in your notes.
- If you answer iPhone calls on the Mac itself, the call is then using the Mac's audio. Our guide to Mac dictation not working during video calls covers that situation.
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.
- Call recording with a transcript. On recent versions of iOS, in supported regions and languages, the Phone app can record a call and save the recording, with a transcript, to Notes. Everyone on the call hears an announcement that recording has started. Whether you have this depends on your iOS version, your region and your language.
- Live Captions. This is an accessibility feature, under Settings > Accessibility, that shows on-screen captions of speech in supported languages and regions, including during calls. It displays what is said. It does not type it anywhere.
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.
- A second call, or a call on hold. If you were on two calls or a conference, ending one can leave the other connected. Check the indicator at the top of the screen.
- A call that moved somewhere else. A call that transferred to your car, or one you picked up on another of your devices, may still be running through the iPhone even though the phone itself is silent.
- Another app with the microphone. A meeting app you closed without leaving the meeting, or an app that is recording in the background, will show the orange dot. Control Centre tells you which app it is.
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.
- Open Control Centre and check where audio is going. Disconnect the headset there, or put the earbuds in their case and close it.
- If you are still in the car, the phone may be using the car's microphone, which sits further from you than the phone does. Speak towards it, or disconnect and use the phone directly once you have parked.
- If it only goes wrong with earbuds in, see iPhone dictation not working with AirPods.
7. It was never the call: dictation is off or restricted
If dictation fails with no call and no orange dot, check the basics.
- Enable Dictation. Go to Settings > General > Keyboard and make sure Enable Dictation is on. With it off, Apple's keyboard has no microphone key at all. See our guide to the microphone button missing on the iPhone keyboard.
- Screen Time. Under Settings > Screen Time > Content & Privacy Restrictions, Siri & Dictation can be switched off, which greys the setting out. Our guide to dictation greyed out on iPhone walks through it.
- A managed phone. An iPhone managed by an employer or a school can have dictation or third-party keyboards restricted. Only the administrator can change that.
- The keypad is not a keyboard. The number pad you use during a call to "press 1 for sales" has no microphone key and never will. The same goes for number-only fields and password fields in apps.
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.
- Full Access. In Settings > General > Keyboard > Keyboards, tap the keyboard and turn on Allow Full Access. Without it, a keyboard cannot reach its transcription service. Our guide to enabling Full Access for a keyboard has the steps.
- Microphone. In Settings > Privacy & Security > Microphone, make sure the keyboard's app is allowed.
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
- Music or a podcast pauses when you dictate. That is normal. Starting dictation takes over the audio for a moment, and playback usually resumes afterwards.
- Dialling in to voicemail is a call. If you ring your voicemail to listen to messages, the phone is on a call for as long as you are connected.
- A silent phone can still be on a call. If the car or a headset has the audio, the phone makes no sound, but the green indicator is still there.
- Recording a voice message uses the microphone too. The record button in a chat app sends audio. It does not produce text, and while it is recording, dictation waits.
- Focus and Do Not Disturb do not affect dictation. They silence notifications and calls. They do not touch the microphone.
- Weak signal is a separate matter. Dictation that sends audio away for transcription needs a connection. In a place where calls barely hold, dictation after the call may be slow for the same reason.
Quick triage
- Green indicator or call timer at the top: a call is live. Fixes 1 to 3.
- Muted, and still no dictation: mute does not free the microphone. Fix 2.
- You want both sides of the call written down: that is recording, not dictation. Fix 4.
- Call over, key still grey: a second call, a call on another device, or a stale keyboard. Fix 5.
- Orange dot with no call: another app has the microphone. Fix 5.
- Dictation starts but hears nothing: the audio is still on a headset or the car. Fix 6.
- No mic key in any app, call or no call: dictation is off or restricted. Fix 7.
- A third-party keyboard's mic will not respond: permissions, or a nudge after the call. Fix 8.
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:
- Before the call, dictate your questions and the points you want to cover, so they are in front of you when the conversation starts.
- During the call, swipe or type keywords only.
- 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:
- Swipe typing is built in, so while the call has the microphone you can swipe a note or a quick reply on the same keyboard without switching.
- The mic button is on the keyboard itself, so the moment the call ends you can dictate the full note in whichever app it belongs in.
- Voice Edit lets you speak a change to fix text. If the summary has the wrong time in it, say the correction instead of fiddling with the cursor on a small screen.
- Two-way translation while dictating covers 24 languages, which helps when the follow-up needs to be in the other person's language.
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.
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