@5beethoven
Are you installing your 2nd gen Google Nest Doorbell for the first time? I wonder if using an iPhone 6s could be an issue, since I think it can only run iOS 15.8.2, though it is supposed to work, with the Google Home app requiring iOS 15.0 or later. You could try contacting Support:
1. Go to https://support.google.com/googlenest/gethelp.
2. Select a category/product family, and type in a brief description of the issue, then click "Next".
3. Click "Other", then click "Next step".
4. Under "Resources", just click "Next step". (Clicking one of the listed links will bring up a Help page page.)
5. Under "Contact options", choose to get a phone call or chat with the team, depending on availability in your country.
If you are reinstalling, what issue prompted you to reinstall? Did you do a factory reset (not a restart)?
https://support.google.com/googlenest/answer/9252162
