Where iOS 18 Stores Phone Call Transcripts for Search

Apple’s iOS 18 introduces native call recording and real-time audio transcription directly within the Phone app. For end users, these transcriptions are automatically compiled and stored in the native Notes app under a dedicated folder, while the underlying text is indexed on-device using Apple’s Core Spotlight framework. This dual architecture ensures that users can easily manage their transcripts while the system maintains fast, secure, system-wide search capabilities.

User-Accessible Storage: The Notes App

When a call recording finishes, iOS 18 automatically generates the text transcription alongside an AI-generated summary. The user-accessible file is saved directly into the Notes app in an automatically generated folder named Call Recordings.

Within this folder, each entry contains:

  • The full audio playback file.
  • The time-stamped text transcription.
  • The Apple Intelligence summary of the conversation.

Because it resides in the Notes database, any search performed inside the Notes app immediately queries the transcript text.

System-Level Indexing: Core Spotlight

To enable system-wide search through Spotlight and the Phone app's search bar, iOS 18 feeds the generated transcription into Core Spotlight.

  • Index Location: The search tokens and metadata are written to the sandboxed system index located within the protected iOS file system (under internal system paths managed by searchd and Core Spotlight).
  • Database Records: The raw text resides locally within the Notes SQLite application container (group.com.apple.notes) and is exposed to the local Spotlight index via CSSearchableItem APIs.
  • Search Integration: When you swipe down on the Home screen to open Spotlight or use the search bar in the Phone app, iOS queries this local Spotlight index rather than scanning the audio file or re-parsing the text in real time.

Security and On-Device Processing

All call transcriptions and their search indexes remain strictly on-device. Apple Intelligence uses local models to transcribe the audio, and the resulting text is encrypted under iOS Data Protection standards using keys tied to the device's Secure Enclave. If iCloud sync is enabled for Notes, the transcriptions are encrypted in transit and at rest within iCloud, but the Core Spotlight index itself remains local to the specific device.