ChatGPT can now be set as the default assistant on Android phones, as revealed in the beta version v1.2025.070 of the app. Users can wake ChatGPT by long pressing the home button or using other gestures, but it cannot be invoked with a voice command or hot word. To set ChatGPT as the default assistant, users must go to device settings and select it under the "Default Digital Assistant App" option. Additionally, ChatGPT has introduced advanced AI tools for Pro users that can enhance productivity by reducing research time, while Gemini's Deep Research feature is limited to a few prompts.