At this point I am just plain disappointed with Apple. This issue has been around since the release of iOS 14 and they still haven't gotten around to fix it. Today this issue caused me to miss out on very important group messages regarding work because the phone just lost signal on its own. I have given up trying to fix this issue. Hours and hours of calling support and in the end they can't do shit. I don't know why they haven't did anything. The scale of this issue presented in this forum really should be something they should fix. I love everything about my iPhone 11. But this is just one issue that is seriously having me considering to switch phones.