IPhone 14 plus cellular issues.

My iPhone 14 plus is basically useless outside of my house. Only way I can use my phone when I leave now is if I am at a place that has free WiFi. The kicker is my wife has an iPhone 14 Pro and has no issues. We will be sitting next to each other at dinner or in the car and her phone has 4 or 5 bars and I am on SOS or E. I have been to T-Mobile 2 different times and they said it's a hardware issue and my phone is still under Apple Care warranty and to go to Apple. T-Mobile even opened a ticket to see if there were tower issues in the area. But it is anywhere I go. And I live in a suburb of Los Angeles.

When I go to the Apple Store they run a diagnostic on the phone and say they don't see any issues. I reset network settings. I even started the phone over from scratch just to see if maybe was one of my cloud backups causing the issue.

I can't even go for a walk in my neighborhood and listen to Spotify because the phone won't connect to the internet.

Anyone else have this problem? I want to think that if I went down to an iPhone 13 that it might even be better. I feel trapped.

I use the phone for maps, music, podcasts, etc. I commute 90 minutes each way to work and half the time the phone shuts off mid-song or in the middle of an audible book.