01 Oct 2025 Search

Firefox for Apple iOS has a new, experimental, “shake to summarize” feature. I just ran into it, by accident.

When I accidentally shake my phone, I want the content of the web page I’m reading to be replaced by AI slop. —no one ever

On some iPhones, the AI runs on the phone itself, while on others it is invoked securely on a cloud-based service. Whether you get the battery-sucking AI or the security-risk, bandwidth-sucking AI is based on what phone you have, and as far as I know you can’t choose.

To avoid accidentally using this feature, you can turn it off in Settings.

  1. Tap the three dot menu at the bottom of the screen, scroll down, and tap Settings.

  2. Scroll down and tap Page Summaries.

  3. Set the Summarize Pages and Shake to Summarize switches to off.

If there is no “Page Summaries” item in Settings, this feature is not enabled on your device.

More info: Firefox launches ‘shake to summarize’ on iPhones by Emma Roth, Firefox for iOS will summarize web pages when you shake your iPhone by Ashwin.