Hi Francisco Galvan,
Thank you for your message. No worries, you can connect your Google Nest Mini to your phone's data if you would like. When you set up your Google Nest Mini, just pick your phone's hotspot for the device to work.
Here are the steps to setting up your device:
- Plug in your speaker.
- On your phone or tablet, open the Google Home app

. - Tap the Add icon


Set up device 

New device 
follow the in-app steps.- If the Set up devices button is not on the screen:
- To set up your first device in the Home app, tap Get started

Set up new devices 
Create another home 
Next 
enter a home nickname and address.
Note: You’ll need to enter a nickname, but you can choose not to enter your address.- To set up all other devices, at the top left, tap the Add icon


Set up device 

New device. - Follow the remaining steps.
- You’ll be able to opt out of some settings, like Voice Match or personal results. You can change these settings at any time after you complete setup.
With the Google Home App on your phone and your device set up, they will be connected as long as they are both on the same internet network, in this case your mobile hotspot.
Please let me know if you have any other questions or concerns. Thanks.
- From Frances (Community Specialist)