Yes. Frequently. In my case, I recently switched from Samsung S22 Ultra to the iPhone 14 Pro Max. My cellular provider is US Mobile. My plan communicates over Verizon networks. Never had a single problem in two years with my S22 or cell provider.
Example, if I'm driving for an hour so and using CarPlay, I noticed that when my connection changes from 5G to LTE a data connection loss occurs. Streaming Music from various streaming services, phone calls, text messages and navigation simply stops even though the iPhone's radio shows that data is connected with 5 bars. Siri responds with a type of connectivity issue response.
When the data connection changes from LTE back to 5G, data connection still fails. I've tried enabling and disabling airplane mode, enabling and disabling cell connection. I disconnect from CarPlay and try music, texts and calls but it still fails. Nothing helps other than rebooting the phone.
I've already tried resetting network settings, etc and all of the other canned responses from apple support and other sites. Its upsetting, 1200.00 for an unlocked iPhone. Plus cases and MagSafe chargers , cable extensions for home and vehicle. Almost 1500.00 worth of apple products in total.
My iPhone is running 16.2. I've read that this might be specific to Verizon but who knows. Personally, it feels like a firmware issue. Hopefully something that can be fixed in software. I only have one week to return everything so I hope a fix happens fast.