iPhone Dictation Not Working in Signal? 9 Fixes That Actually Work

Short answer: Signal has no dictation of its own. The microphone in Signal's message bar records and sends a voice message, not text. Speech-to-text comes from your keyboard's mic key, so fix it in iOS Settings: toggle Enable Dictation, check the keyboard language, end any Signal call, and check Screen Time restrictions.

You open a Signal chat, tap the microphone, say a sentence, and either nothing appears in the message box or, worse, a little audio clip gets sent to the other person. Dictation worked in Messages ten minutes ago. So what is Signal doing differently?

Mostly, nothing. Signal is not interfering with your dictation. The confusion comes from the fact that Signal has a microphone button of its own that does something completely different from what you expect, and that the real speech-to-text feature belongs to the keyboard, not to Signal. Once you separate those two things, the fixes become straightforward and most of them take under a minute. This guide walks through them in the order that resolves the most cases fastest, then covers the Signal-specific quirks that look like bugs but are not, and ends with a plain explanation of what end-to-end encryption does and does not cover when you dictate.

First: Signal's mic button is not dictation

Open any Signal conversation and look at the message bar. To the right of the text field, when the field is empty, there is a microphone icon. Press and hold it and Signal starts recording a voice message. Let go and it sends the recording as an audio clip. You can slide to lock the recording so you do not have to keep holding, or slide the other way to cancel.

That button never turns speech into text. It is a voice memo, delivered as audio, that the recipient has to play back. If you held it, spoke, and then found an audio clip in the thread instead of typed words, nothing is broken. You used a feature that does exactly what it did, just not the one you wanted.

The button you want is on the keyboard, not in Signal. Tap into the text field so the keyboard slides up, then look at the bottom row of keys, near the space bar or the emoji key. The small microphone there is Apple's system dictation. It belongs to iOS. It turns speech into text inside whatever field has the cursor, and it works the same way in Signal as it does in Notes, Mail, or Messages.

This distinction decides where you go to fix things. Signal's own microphone permission controls voice messages and calls. It has no bearing on the keyboard mic key. The keyboard mic key is controlled entirely by iOS Settings. Everything from fix 1 onward is about that key.

The 30-second test that tells you where the problem lives

Before changing any setting, run this test. Close Signal. Open Apple Notes, start a new note, tap the keyboard mic key, and say a sentence.

• Notes works, Signal does not. The keyboard mic is fine and something about the Signal session is getting in the way. Usually that is an active Signal call, a dismissed keyboard, or stale app state. Start with fixes 4 and 7.
• Notes fails too. This has nothing to do with Signal. It is a system-level dictation problem. Start with fixes 1, 2, 3, 5 and 6. The general guide to iPhone dictation not working covers the same ground in more depth.
• The keyboard has no mic key at all. Skip to fix 3. The key is hidden or the active keyboard does not have one.

Signal gives you a second useful test bed: the Note to Self chat. It is a conversation with only you in it, so you can dictate test sentences there without sending gibberish to a friend. Search your chat list for Note to Self, or start a new message and pick your own name.

Fix 1: Toggle Enable Dictation off and on

This is the single most effective fix for the keyboard mic key. Go to Settings, then General, then Keyboard. Find Enable Dictation and turn it off. Wait a few seconds, then turn it back on. iOS may ask you to confirm and may re-download a language pack in the background.

Go back to Signal, tap into the message field, and try the mic key again. The toggle cycle clears a stale dictation state that survives app restarts and often survives phone restarts too. If the mic key was greyed out before, it should now be active.

If Enable Dictation is missing from the menu entirely, or the switch is greyed out and cannot be changed, a restriction is in place. Jump to fix 5.

Fix 2: Check the keyboard language and dictation languages

Dictation listens in the language of the keyboard you currently have active. If you have more than one keyboard installed and you are on the wrong one, dictation will either produce nonsense or refuse to start. Tap and hold the globe key on the keyboard to see which language is selected, and switch to the one you are actually speaking.

Then go to Settings, General, Keyboard, and look for Dictation Languages. Make sure the language you speak is ticked. If you recently added a keyboard for a second language, iOS may have changed which dictation languages are active, and a mismatch there causes silent failures. Signal users who message across languages hit this more than most, because they switch keyboards often and forget which one is up.

Fix 3: Confirm the active keyboard actually has a mic key

If there is no microphone on the keyboard at all, one of three things is true.

• A Bluetooth keyboard is connected. When a hardware keyboard is paired, iOS hides the on-screen keyboard and its mic key. Disconnect the keyboard or turn off Bluetooth, and the on-screen keyboard returns.
• You are on a third-party keyboard without its own mic. Apple's dictation key is only on Apple's keyboard. Many third-party keyboards have no microphone. Tap and hold the globe key and switch back to the built-in keyboard, or use a third-party keyboard that brings its own dictation.
• The third-party keyboard has a mic but no Full Access. A keyboard that does its own transcription needs a network connection, and iOS blocks third-party keyboards from the network until you grant Full Access. Go to Settings, General, Keyboard, Keyboards, tap the keyboard, and turn on Allow Full Access. The step-by-step guide to enabling Full Access for a keyboard on iPhone covers what that permission does and does not allow.

If the built-in keyboard is active and the mic key is still missing, go back to fix 1 and make sure Enable Dictation is on. The key does not appear when dictation is off. The dedicated guide to a missing iPhone dictation mic button walks through the rarer causes.

Fix 4: End any Signal call before you dictate

Signal voice and video calls hold the microphone for the duration of the call. If you try to dictate a message while a call is running, even one you have minimised to the banner, the keyboard mic key may start and produce nothing, or may refuse to start. This is not a Signal defect. iOS gives the active call priority over the microphone.

Check the top of the screen for the green call indicator or the call banner. End the call, or wait until it ends, and then dictate. The same applies to any other app holding the microphone: a phone call, a FaceTime call, or a voice memo still recording in the background. If you use Signal for calls a lot, this one fix accounts for a large share of "worked yesterday, not today" reports.

Fix 5: Check Screen Time and device management restrictions

If Enable Dictation is greyed out, missing, or keeps switching itself off, something above your user settings is controlling it. There are two places to look.

First, Screen Time. Go to Settings, Screen Time, Content & Privacy Restrictions. Under Allowed Apps (or Allowed Apps & Features on newer versions), make sure Siri & Dictation is allowed. If Content & Privacy Restrictions is on and you did not set it up, someone else did, typically a parent or a previous owner of the phone. You will need the Screen Time passcode to change it.

Second, device management. Go to Settings, General, VPN & Device Management. If a management profile is installed, your employer or school can block dictation as a policy. This is common on work phones, and it matters for Signal specifically because plenty of people use Signal for work conversations on a managed device. If a profile is present and dictation is blocked, no setting on your side will override it. Ask your IT administrator whether dictation can be allowed for your device.

Also check the plain privacy toggle. Go to Settings, Privacy & Security, and confirm nothing has been turned off that would affect the microphone at a system level. Privacy-conscious users sometimes disable more than they meant to during a settings clean-up, and Signal users are, on average, more privacy-conscious than most.

Fix 6: Turn off Low Power Mode and check your connection

Low Power Mode throttles background activity and can make dictation start late, cut off early, or fail to start at all. Go to Settings, Battery, and turn Low Power Mode off, or charge the phone above the threshold where it disables itself. The full write-up on iPhone dictation in Low Power Mode explains why the two clash.

Then check your connection. Some dictation languages can run on the phone without a network, but many need one, and the result is inconsistent if your connection is weak. Signal users often run a VPN. A VPN that is connected but stalled will let Signal queue messages while blocking dictation from finishing. Toggle the VPN off, try dictating, and turn it back on. If dictation works only with the VPN off, the issue is the VPN configuration, not Signal and not the keyboard.

Fix 7: Force-quit Signal, reopen the chat, and check your AirPods

App state gets stale. Swipe up from the bottom of the screen (or double-press the Home button on older phones), find Signal, and swipe it away. Reopen it, open the conversation, tap into the message field so the keyboard is fresh, and try again.

While you are at it, check the audio route. If AirPods or another Bluetooth headset are connected but sitting in their case, in a bag, or on a desk across the room, iOS may be sending the microphone input to them rather than to the phone. Dictation then hears nothing. Put them in your ears, or disconnect them from Control Center, and try again. The guide to iPhone dictation not working with AirPods covers the audio-routing cases in detail.

Fix 8: Update iOS and Signal, then restart

Dictation regressions do appear in iOS releases and get fixed in the next point release, so go to Settings, General, Software Update, and install anything pending. Signal updates frequently as well; open the App Store and update it. Then restart the phone properly rather than just locking it. A cold restart clears the audio subsystem in a way that force-quitting a single app does not.

Fix 9: Reset the keyboard dictionary

This is the last resort before contacting Apple, and it is more effective than it sounds. Go to Settings, General, Transfer or Reset iPhone, Reset, and choose Reset Keyboard Dictionary. You will lose the custom words iOS has learned from your typing, but nothing else. A corrupted keyboard dictionary produces exactly the symptoms people describe as "dictation stopped working in one app": the mic starts, the waveform moves, and no text arrives. Reset, then test in Notes first, then in Signal.

The Signal-specific quirks that look like bugs

Once the mic key works, a few Signal behaviours can still make you think it does not.

You sent a voice message by accident

Covered above, but worth restating because it is the most common report. If it happened and you want to undo it, long-press the sent voice message and choose Delete for Everyone. Signal allows this within a limited time window after sending. After that, it can only be deleted from your own device.

Tapping the conversation ends the session

If you tap anywhere in the message thread while dictating, the keyboard dismisses and dictation stops. That is standard iOS behaviour: dictation lives inside the keyboard, and dismissing the keyboard ends it. Keep your eyes on the text field while you speak, and only scroll the thread after the words have landed.

Mentions and usernames come out as words

In a group chat, saying "at Sam" does not create a mention. You will get the word "at" or an @ sign followed by the name, depending on how iOS interprets it, and it will not trigger Signal's mention picker. Type the @ and pick the person from the list, then dictate the rest of the message.

Dictation cuts off mid-sentence

System dictation ends after a pause or after a long stretch of speech. There is no setting to extend it. Speak in shorter chunks and tap the mic again, or use a keyboard whose mic runs for as long as you hold the button.

Punctuation has to be spoken

Apple's dictation adds some punctuation automatically and expects you to say the rest. If you are used to a keyboard that punctuates for you, the first few Signal messages will look flat. Say "period", "comma" and "question mark" until you find the rhythm, or switch to a keyboard that handles it.

Disappearing messages have no effect

People occasionally suspect that a disappearing-message timer is interfering with dictation. It is not. The timer acts on messages after they are sent. Dictation happens before the message exists. If the two seem linked, it is coincidence.

What encryption does and does not cover when you dictate

Signal users choose Signal because messages are end-to-end encrypted: only the sender and the recipient can read them, and Signal's servers cannot. That guarantee is real, and it covers the message once it exists. It does not cover the step where your speech becomes text, because that step happens in the keyboard, before Signal ever sees the words.

So the honest question is not "is Signal secure" but "who processes my voice." If you use Apple's keyboard mic key, Apple's dictation processes it. Some languages are processed on the phone and some involve Apple's servers, and Apple documents which. If you use a third-party keyboard with its own dictation, that keyboard's provider processes it. Whatever the route, once the text is in the message field and you tap send, Signal's encryption takes over as usual.

That is why the Full Access permission in fix 3 deserves a moment's thought. Granting it lets a keyboard reach the network, which is what makes dictation possible. It also means you are trusting the keyboard's maker with what you dictate. Read their privacy statement and decide for yourself. We will state ours plainly below rather than dress it up.

A keyboard that brings its own dictation to Signal

Everything above is about making Apple's dictation behave inside Signal. There is a simpler route: a keyboard with its own microphone that works identically in every app, Signal included, and that does not compete with Signal's voice-message button because it lives on the keyboard row where the mic key has always been.

Voice Keyboard Pro is a custom iPhone keyboard with a built-in mic button for dictation in any iOS app. You tap the mic, speak, and the words appear in Signal's message field. The recording runs for as long as you want rather than cutting off after a pause, and punctuation is handled for you. If you want a walkthrough of a good workflow, read how to dictate text messages in Signal.

Two features matter for messaging in particular. Voice Edit lets you speak a change to fix text, so when a name comes out wrong you say what to change instead of thumbing back through the message. And two-way translation while dictating covers 24 languages, which is useful in Signal groups where not everyone shares a first language. Swipe typing is there for the short replies.

Voice Keyboard Pro is free with daily limits, and Pro is $4.99 a month or $34.99 a year. On privacy, since it matters to Signal users more than most: Voice Keyboard Pro's transcription engine processes the audio to produce text, and the server stores only operational pings. No audio is kept and no transcript content is kept. Your messages are between you and the person you sent them to.

The same app works on the Mac as a menu bar tool, including in Signal Desktop. Hold a hotkey, speak, release, and text appears at the cursor system-wide. Smart Vocabulary keeps a personal dictionary with replacement rules so the names and terms you use often come out spelled the way you want them.

Frequently asked questions

Dictation works in Messages but not in Signal. Why?

Almost always because you tapped Signal's voice-message button rather than the keyboard mic key, or because a Signal call is holding the microphone. Tap into the text field so the keyboard is up, use the mic on the keyboard row, and make sure no call is active. If it still fails, force-quit Signal and try again.

Does the keyboard mic key need Signal's microphone permission?

No. Apple's system dictation runs outside the app and does not need Signal to have microphone access. Signal's microphone permission covers voice messages and calls only. If you have denied Signal the microphone, the keyboard mic key still works.

Why did Signal send an audio clip when I tried to dictate?

Because the microphone in Signal's message bar records voice messages. It has never been a dictation feature. Use the microphone on the keyboard instead. If you want the audio clip gone, long-press it and choose Delete for Everyone while the option is still available.

Can I dictate in Signal with a third-party keyboard?

Yes. Signal supports third-party keyboards like any other iOS app. If the keyboard does its own transcription it will need Full Access to reach the network. Switch to it with the globe key and use its mic button in the Signal text field.

Does dictation in Signal work offline?

Some dictation languages can run on the phone without a connection, so you may be able to compose a message offline. Signal cannot send it until you are back online, and it will queue in the meantime.

Is dictating in Signal a privacy risk?

Signal's encryption protects the message after it exists. The speech-to-text step is handled by whichever keyboard you use, so choose one whose privacy position you are comfortable with. Voice Keyboard Pro keeps no audio and no transcript content; the server stores only operational pings.

Dictation cuts off after a few seconds in Signal. Is that Signal's fault?

No. Apple's dictation ends after a pause or a long stretch of speech in every app. Speak in shorter chunks, or use a keyboard whose mic keeps running as long as you hold it.