Google is phasing out its Google Assistant on mobile devices and migrating users to its new voice assistant, Gemini, with the transition expected to be completed by 2026. Reports indicate that the migration is underway in the U.S. and Europe, and Google Assistant has been removed from all checked devices and accounts. The option to switch back to Google Assistant has been removed from the Gemini app, preventing users from accessing the older assistant on mobile devices, tablets, and paired devices. However, Google Assistant remains operational on smart speakers and displays like Google Nest and Google Home. Gemini is now the primary voice assistant on Android devices, activated through a long press of the power button or a swipe from the screen corners. Further developments in Gemini's capabilities are anticipated in the coming months.