Apple devices include a feature called "Improve Siri & Dictation," which allows the company to store and review audio recordings and transcripts of interactions with Siri, as well as requests for translation or dictation. This feature is automatically enabled during the initial setup of a device, but many users may not be fully aware of how Apple processes and retains this data. When enabled, Apple uses the collected data to analyze user requests and improve its language models, which are crucial for the company's artificial intelligence (AI) efforts, such as the AI-powered Siri in iOS 17 and advanced dictation tools. According to Apple's legal documentation, employees review transcripts to "fine-tune Siri, Search, Voice Control, Translate, and automatic speech recognition models." These manual reviews serve as a form of quality control, but only a small number of interactions are selected for review. Additional data that may be included are details such as when and where a request was made, device specifications, performance metrics, and the type of interaction. Apple may also consider contextual information like contact lists or apps downloaded on the device. Apple retains voice data for up to two years, though some data might be kept longer. This is separate from the data stored on the device itself, which is used to personalize the Siri experience. Apple does not sell this information to marketers. To protect user privacy, Apple associates audio recordings with a "random, device-generated identifier that rotates multiple times per hour," rather than directly linking them to an Apple account or email address. The data is reviewed only by Apple employees who are bound by strict confidentiality agreements, though some data may be reviewed by third-party contractors. Trusted third-party service providers may also process and store this information. Users can change the "Improve Siri & Dictation" setting on a variety of Apple devices, including iPhones, iPads, Macs, Apple Watches, HomePods, Apple TVs, and Apple Vision Pros. On an iPhone or iPad, this can be done in the Settings app under Privacy & Security > Analytics & Improvements. On a Mac, the setting is found in System Settings under Privacy & Security. For Apple Watch users, the option is available in General > Analytics & Improvements. HomePod users can adjust it in the HomePod app, while Apple TV users can navigate to Settings > General > Privacy > Analytics & Improvements. Apple Vision Pro users can adjust the setting in Settings > Privacy & Security > Analytics & Improvements. Additionally, users can delete local voice data directly from these settings.