Google is phasing out Google Assistant in favor of its new AI model, Gemini, on mobile devices, starting September 4. Users are losing access to Assistant on Android devices, with the "Switch to Google Assistant" option disappearing from the Gemini app's account menu for many, particularly after updating to the latest beta version of the Google app (v17.62). This change has been reported across various devices, including the Samsung Galaxy S23 Ultra, POCO F9 Ultra, and vivo X300 Pro. While some users appreciate Gemini's capabilities, others believe the transition is premature and that Assistant remains superior, especially for tasks like smart home controls and offline commands. Critics of Gemini point out issues with inaccuracies and hallucinations. The transition affects Google Assistant on mobile devices and accessories but will continue to be supported on smart speakers and displays.