I'm using iPhpne 11 Pro Max and I'm also having the same issue. tried restarting of my phone network reset done changed sim cards. changed automatic network selection to manually but no luck. everytime signal just disappear and then keep like that for so long. we need a fix for this as soon as possible.

I'm also facing the same problem. I am using Macbook Air 2020 with 3 battery cycles only. It's a brand new Macbook but still seeing this error for batter that Service recommended. If anybody knows how to fix it then let me know. Thanks!