Move your camera, router, or other objects If feasible, move your camera a foot or two away from its original location. Move your Wi-Fi router and camera or doorbell closer to each other. If possible, move objects that might cause wireless interference away from your camera, doorbell, or router.

You could try restarting your Google Nest Hello Doorbell by disconnecting it from power for at least 10 seconds, either by disconnecting the doorbell from the doorbell wires or by turning off the circuit that the doorbell is on.

When Nest cameras appear offline, Google recommends users restart their cameras or video doorbells to refresh the connection and then check again for the live video. Users may also try restarting their router and modem to effectively reset the internet connection or also try disabling any network extenders.

Use the reset button It's between the power cord and the camera neck. Insert a paper clip, thumbtack or similar into the hole. Press and hold down. At 10 seconds, the status light will blink yellow four times, and you'll hear a countdown tone.