IPhone 12 Pro Max Cellular and WiFi connectivity issue

Hello everyone I have been having issues with connectivity with my IPhone 12 Pro Max its software is up to date iOS 14.7.1. I lose cellular reception randomly I thought it was an isolated issue but it keeps happening and I keep doing the airplane mode trick but that’s kind of a drag doing it every day and it’s also happening with the WiFi connection it says it’s connected but it’s not loading anything I check other devices connected to the WiFi and they are working fine so I have to keep turning off the Wifi on the iPhone and re-connecting daily also at this point it’s getting kind of annoying it’s not hard work but I shouldn’t be doing all these extra steps just to use a device I bought less than a month ago. Any solutions to these problems out there?? Or did I get a defective device? Thanks for any help in advance.