From September 4, Android phones in India start auto-switching from Google Assistant to Gemini. The change begins today and will roll out over several weeks. Students and professionals should confirm their default assistant and prepare for small behaviour shifts. Google positions Gemini as the primary voice experience on Android during this phase.
Expect familiar triggers to invoke Gemini, including the power key shortcut and “Hey Google,” where enabled. Grant microphone, notifications, and on‑screen context permissions for smooth handoff. If features look inconsistent, your device may be awaiting the staged flip. Early functionality mirrors Assistant essentials, with more capabilities promised as updates land.

Open Settings, tap Apps, then Default apps, and choose Digital assistant app. Select Gemini. You can also open the Google app, tap your profile picture, choose Settings, then Digital assistants from Google, and pick Gemini. Enable Voice Match to use “Hey Google.” Missing toggles usually signal pending rollout.
Core actions like calls, timers, and reminders work, and Home routines run when linked to Gemini Apps. Some third‑party controls and Android Auto calling remain inconsistent, so expect occasional gaps versus classic Assistant. Google says more features will arrive progressively as updates expand coverage.
Gemini officially supports English plus nine Indian languages, including Hindi, Bengali, Tamil, Telugu, and Marathi. Note that several Indic languages do not support the “Hey Google” hotword yet, though press‑to‑talk still works. Voice experiences will broaden as Gemini Live and language packs continue rolling out.
Google Assistant on Wear OS and phone‑projected Android Auto begins retiring from today. However, vehicles with Google built‑in continue using Assistant for now while Gemini integration matures. The transition is phased, so timelines differ by device, brand, and region across the coming weeks.
Review permissions inside Gemini: microphone, notifications, and on‑screen context for smarter replies. If Gemini fails to appear, update the Google and Gemini apps, then reboot. Many devices still show Assistant until the flip reaches them, which can take weeks. You can manage activation or preferences anytime in Gemini settings.