Apple is adding a new ’Side Button Access’ feature in the latest beta of iOS 26.2, giving users in Japan the ability to launch third-party voice-based conversational apps by pressing and holding the side button on their iPhone.
The option gives users in Japan another way to customize their device. Once configured, holding the side button can immediately open a preferred conversational app, creating a system-level shortcut similar to invoking Siri.
Källa: iOS 26.2 Beta 3 Lets You Replace Siri on the Side Button in Japan
