Google Home discovery can fail because the phone is on the wrong network, a setup unit is not ready or old and Pro generations are mixed.
Before you change anything
This is a diagnostic entry point. The source supports the general check, not a confirmed root cause for your device.
What to check first
Are the two units from different mesh generations?
Record the exact model, hardware revision, firmware and recent change before adjusting settings. If you cannot answer the question, keep the cause open.
Narrow the likely path
| Observation | Next check |
|---|---|
| Light or app says offline | Use the correct model and role chart; color alone is inconclusive. |
| Node will not join | Check the specific mesh family and parent/child setup sequence. |
| Feature menu differs | Compare the current firmware and hardware revision with the vendor guide. |
Decision after the first test
Check exact hardware generation, power and app setup state. Keep the phone on the intended local network during one clean attempt.
Use a documented next step
Verify before escalating
After each change, repeat the exact failed task. If the result is unchanged, restore the previous setting and use the official support link for your exact hardware revision. Don’t assume a menu or capability from a related model.
Official sources
- Nest Wifi setup and generation compatibility (full_text; checked 2026-11-01)
Check your exact US model, hardware revision, and firmware on the linked support page before changing settings.