As per subject line.
When trying to view some (not all) recorded events in the 'Home History' of the Google Home app on my iPhone, I get the error 'Make sure the camera is on and connected to Wi-Fi'
The thumbnails of affected videos play fine.
Thank you for bringing up the concern you're experiencing, I would love to look into this further for you. The first troubleshooting step that I'd recommend would be to restart your device. This process should keep all your settings, and reconnect it to the same Wi-Fi network. This is helpful if it ever freezes, has connection problems, or isn't working normally.
The Nest doorbell battery is basically useless if it's below 32 Fahrenheit/0 Celsius. Mine ran into tons of problems between not recording events despite seeing a thumbnail, battery dying within 3 days, and just general problems with the interface. I swapped off to the Nest Hello wired instead and it works like a dream. Sucks that Googles' hardware design team is hell bent on destroying good products but oh well. My recommendation is to find something that isn't the Nest Battery is you live anywhere that experiences temperatures below 40 in the winter. Also ignore the "community specialist Brad", 90% sure he's a bot that just responds with "thanks, can you try the most basic troubleshoot 10 times?"
I know that keeping your Nest devices charged is very important, and I would love to help you out. When it comes to keeping your Nest Doorbell (battery) or Nest Cam (battery) up and running, here are some articles and troubleshooting guides for the best charging practices:
I hope those articles help shed some light on charging and maintaining battery levels of your Nest doorbell or camera. Please let me know if you need further assistance.