You can go ahead and grab it from the Play Store. Google's Gemini app for Android is finally available in the UK and EU, many months after its original...
Was offered Gemini for the first time this morning after saying Hey Google. Turned it down, as not sure if I can try it but then still go back when Gemini turns out to be crap.
You can switch back to using Google Assistant as your primary assistant on your phone in your settings. To do this:
Open your Gemini mobile app.
At the top right, tap your Profile picture or initial and then Settings and then Digital assistants from Google.
Tap Google Assistant.
Bear in mind, if you’re switching back to Google Assistant as your primary assistant:
When you say, ‘Hey Google’, or activate your mobile assistant by touch (like when you press and hold the power button), Google Assistant will respond.
If your Web & App Activity is turned on, data from your interactions with Google Assistant will be saved to your Google Account. Learn more about how Google Assistant works with your data.
Data saved in your Gemini Apps activity will not automatically be deleted, but you can review and delete it at any time.
Was offered Gemini for the first time this morning after saying Hey Google. Turned it down, as not sure if I can try it but then still go back when Gemini turns out to be crap.
EDIT - answering my own question…
https://support.google.com/gemini/answer/14554984?sjid=8086039825660807195-EU
Switch back to Google Assistant
You can switch back to using Google Assistant as your primary assistant on your phone in your settings. To do this:
Open your Gemini mobile app.
At the top right, tap your Profile picture or initial and then Settings and then Digital assistants from Google.
Tap Google Assistant.
Bear in mind, if you’re switching back to Google Assistant as your primary assistant:
When you say, ‘Hey Google’, or activate your mobile assistant by touch (like when you press and hold the power button), Google Assistant will respond.
If your Web & App Activity is turned on, data from your interactions with Google Assistant will be saved to your Google Account. Learn more about how Google Assistant works with your data.
Data saved in your Gemini Apps activity will not automatically be deleted, but you can review and delete it at any time.