Apple confirms side-button support for third-party voice assistants other than Siri in Japan

A new document in Apple’s Developer blog confirms that users in Japan will be able to reassign the side button to launch third-party voice-based conversational apps, rather than Siri. Here are the details.

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Source: https://9to5mac.com/2025/11/17/iphone-replace-siri-side-button-japan-ios-26-2/