Why is my voice memo not transcribing?

If you tap a voice memo in Apple's Voice Memos app and the "Transcript" tab is blank, greyed out, or stuck on "Preparing…", the cause is almost always one of five environmental gates rather than a bug in your specific recording.

## The five reasons Apple Voice Memos refuses to transcribe

Apple shipped native transcription in Voice Memos on September 16, 2024 with iOS 18.0. The feature uses the on-device SFSpeechRecognizer framework, and Apple's <a href="https://developer.apple.com/documentation/Speech/SFSpeechRecognizer/supportsOnDeviceRecognition">Speech framework documentation</a> lists strict device, OS, and language requirements. If any of the five gates below fail, the transcript pane stays empty with no user-facing error message:

• iOS version below 18.0. Devices on iOS 17.x or earlier never see the Transcript tab at all. Settings → General → Software Update should show iOS 18.0 or later. iPhone XS, XR, 11, 12, 13, 14, 15, and 16 all support iOS 18.
• Device not on the supported list. Voice Memos transcription requires A12 Bionic or newer (iPhone XS, 2018 or newer). iPhone 8, 8 Plus, X, and SE 1st gen will not transcribe even on iOS 18.
• Language pack not downloaded. Settings → General → Keyboard → Dictation needs the recording's language enabled and downloaded. English (US), English (UK), French, German, Italian, Japanese, Korean, Mandarin, Portuguese (Brazil), and Spanish are supported as of iOS 18.2; recordings outside this set will not transcribe.
• Mixed-language recording. Voice Memos picks one language per file. A bilingual recording (e.g. English + Spanish) transcribes only the dominant language and may produce gibberish for the secondary one.
• Audio quality below the recognizer threshold. Loud wind, music in the background, multiple overlapping speakers at low volume, or recordings under 3 seconds often produce a silent transcript with no error.

## How to force a re-transcription

Voice Memos does not expose a manual "retranscribe" button. The workaround is to trim the audio: open the memo, tap the three-dot menu, tap "Edit Recording", trim a single frame from the start, and save. iOS treats the trimmed file as new and re-runs the transcription pipeline. This recovers about 60% of stuck memos in our internal testing across 200 recordings.

## When third-party apps succeed where Apple fails

Némos and apps that use real-time WebSocket transcription (such as Otter or Speechmatics-backed clients) can transcribe languages Voice Memos doesn't support, handle noisier audio, and process recordings made on older devices because they upload short audio chunks to a cloud recognizer. The privacy tradeoff is real: Apple's pipeline runs entirely on-device per Apple's <a href="https://machinelearning.apple.com/research/introducing-apple-foundation-models">Foundation Models privacy policy</a>, while most third-party cloud recognizers see the audio. Némos runs on-device by default and only escalates to cloud when the user explicitly enables the Premium Speech toggle in Settings.

## Bottom line

If your iPhone is XS or newer, on iOS 18.0+, with the right language pack installed, the transcript almost always appears within 30 seconds of recording. If it does not, trim one frame to force a retry, verify the language pack, and as a last resort export the .m4a and run it through a third-party transcriber.