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Gemini replaces Google Assistant on Android, Wear OS

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Gemini replaces Google Assistant on Android, Wear OS

Google has emailed existing Google Assistant users to say the app is being shut down on Android and Wear OS starting September 4, 2026, with Gemini taking over as the on-device assistant. The change reaches smartphones, tablets, Wear OS watches, headphones and vehicles running Android Auto. Google says the rollout could take a few weeks to reach everyone, and once a device switches over there is no way to go back to Assistant.

Cars using "Google built-in" are the exception: Google says Assistant will stick around there for now, unlike the Android Auto vehicles covered by the shutdown. Beyond phones and watches, Google is also bringing Gemini to Google TV, Google Home speakers and smart displays, extending the same handover to the rest of its device lineup.

The shutdown was originally planned for 2025 before Google pushed it back to 2026, according to 9to5Google; the source does not say why. The Decoder frames the switch as a real test of whether a general-purpose AI system like Gemini can match the old, deterministic Assistant's reliability on everyday commands, such as controlling smart home devices or basic phone tasks, since a probability-based LLM could behave less predictably than the tool it replaces. That reading is the outlet's own framing, not a claim made by Google.

Key facts

  • Google emailed existing Google Assistant users to say the app is shutting down on Android and Wear OS starting September 4, 2026, with Gemini taking over as the on-device assistant.
  • The shutdown covers smartphones, tablets, Wear OS watches, headphones and vehicles running Android Auto; cars using "Google built-in" keep Assistant for now.
  • The rollout could take a few weeks to reach all users, and once a device switches to Gemini there is no way to switch back to Assistant.
  • The shutdown was originally planned for 2025 but was pushed to 2026, according to 9to5Google, which does not explain why.
  • Google is separately bringing Gemini to Google TV, Google Home speakers and smart displays.

Why it matters

Assistant is being retired everywhere Google controls the software, not just on phones: smartphones, tablets, Wear OS watches, headphones and Android Auto vehicles all move to Gemini, and Google is separately rolling Gemini out to Google TV, Google Home speakers and smart displays at the same time. That makes this one of the broadest single swaps of a rule-based assistant for a general-purpose AI system across a company's consumer hardware line, and it puts Gemini in charge of basic, high-frequency tasks, like setting alarms or controlling smart home devices, that previously ran on Assistant's more predictable, deterministic logic.

Who it affects

Everyone currently using Google Assistant on Android phones, tablets, Wear OS watches, headphones or in a car through Android Auto will be switched to Gemini as their device gets the update, which Google says could take a few weeks to reach everyone; there is no setting to opt out or switch back once it happens. The one exception, according to Google, is cars that use "Google built-in," which keep Assistant for now. Owners of Google TV, Google Home speakers and smart displays are affected separately, as Gemini rolls out to those product lines.

How to use it

There is nothing to sign up for: Google is switching users over automatically starting September 4, 2026, with the change reaching different devices over the following weeks rather than all at once. Once a phone, tablet, watch, headphones or Android Auto car has switched to Gemini, Assistant is gone from it for good, with no option to revert. Anyone who wants to keep the older Assistant as long as possible has no lever to pull beyond watching for the update; a car that uses "Google built-in" rather than Android Auto keeps Assistant for now regardless.

How solid is it

The core facts, the September 4, 2026 start date, the list of affected device types, and the exception for "Google built-in" cars, come from Google, as relayed by The Decoder. The detail that the shutdown was originally set for 2025 and got pushed to 2026 is sourced to 9to5Google rather than to Google directly, and no reason for the delay is given anywhere. The article does not name a Google spokesperson or executive behind the announcement, and it gives no total count of affected users, devices or countries, nor an exact date for when the multi-week rollout finishes.

Risks and caveats

The most concrete open question is reliability: Assistant is deterministic software, while Gemini is a probability-based language model, and the article itself, not Google, raises the possibility that Gemini could get simple everyday commands wrong in ways the older Assistant did not. That concern is the outlet's framing rather than a reported failure, a user complaint, or an admission from Google. Several practical details are also missing from the source: no timeline for when Assistant will eventually leave "Google built-in" cars, no date for when the Gemini rollout to Google TV, Google Home speakers and smart displays completes, and no way for a user to delay or reverse the switch once it reaches their device.