Is iPhone dictation private? What Apple does with your voice
Tapping the microphone key is the quickest way to get words onto an iPhone. But if you dictate client notes, patient details or anything else confidential, it's worth knowing where that audio goes. Sometimes it never leaves your phone, and sometimes it's sent to Apple. Here's how to tell the difference, and which settings to check.
On your iPhone or on Apple's servers
Apple's privacy page for Siri and Dictation describes two cases. When your iPhone can recognize your speech itself, the audio and transcript stay on the device. When it can't, what you dictate is sent to Apple's servers to be transcribed. Which one happens depends on things like your language and your iPhone model.
Apple says your iPhone shows in Keyboard settings when dictation is processed on the device. To check, open Settings → General → Keyboard and read the information next to the Dictation switch.
There's also a simple test: turn on airplane mode, open Notes and dictate a sentence. If the text appears, your iPhone transcribed it without an internet connection, so the audio didn't leave the phone.
What happens when dictation goes to Apple
According to Apple's privacy page:
- It isn't stored by default. Dictation processed on Apple's servers isn't stored unless you've opted in to Improve Siri & Dictation.
- It isn't tied to your Apple Account. Siri and Dictation request history is linked to a random identifier generated by your device, which changes several times an hour.
- Stored data can be kept for up to two years. Apple says it may keep and use request history, including transcripts, for up to two years to improve Siri, Dictation and related features, and may keep a reviewed subset for longer.
That's a more careful approach than many cloud transcription services. But it means you're relying on a policy and a setting, rather than on the audio never leaving your phone.
The setting to check: Improve Siri & Dictation
Improve Siri & Dictation is optional. When it's on, Apple can store and review a sample of your audio recordings and transcripts to improve its services. On iPhone, go to Settings → Privacy & Security → Analytics & Improvements and check that Improve Siri & Dictation is off. On some newer iPhones it's called Improve Siri & Apple Intelligence.
Until 2019, this wasn't something you opted in to. In August 2019, Apple announced that it would no longer keep audio recordings of Siri interactions by default, that reviewing audio would become opt-in, and that only Apple employees would listen to the samples.
Accidental Siri recordings
Dictation and Siri are separate features, but they share the same settings and privacy policy. In a US class action, Lopez v. Apple, users alleged that Siri recorded private conversations after being activated by accident. Apple denied wrongdoing but agreed to pay $95 million to settle the case, as reported in January 2025. If you don't use voice activation, you can turn off listening for "Siri" or "Hey Siri" in Siri settings, so Siri only starts when you press the side button.
Where your dictated text ends up
Even when the transcription happens on your iPhone, the text goes into whatever app you were typing in. Dictate a client note into Notes and it syncs to iCloud like any other note. Apple's iCloud security overview lists Notes as encrypted on its servers with Apple holding the keys, unless you turn on Advanced Data Protection. Keeping a note in the On My iPhone account keeps it off iCloud entirely. For confidential work, where the text is stored matters as much as where it was transcribed.
What it means for confidential work
- Built-in dictation is fine for everyday messages, especially with Improve Siri & Dictation turned off.
- For client or patient material, prefer on-device processing you can verify. The airplane-mode test is the easiest check.
- Think about where the text lands. A locked note in On My iPhone, or an app that encrypts on the device, keeps it out of the cloud.
- Your professional rules still apply. Confidentiality duties cover the tools you use, not just what you say.
Quick checklist
- Read what Settings → General → Keyboard says about where dictation is processed.
- Try dictating in airplane mode.
- Turn off Improve Siri & Dictation.
- Delete your history: in Siri settings (Apple Intelligence & Siri on newer iPhones), tap Siri & Dictation History.
- Keep confidential notes somewhere that isn't synced, or that's end-to-end encrypted.
For a complete private workflow, see how to transcribe voice notes on iPhone without the cloud.