Service is terrible in Downtown Berkeley, California. You know, the one with the flagship public university!
Area code 94703
Visit Civic Center Park on Martin Luther King and Allston and you maybe get 1 or 2 bars. Go to the opposite corner, on Milvia and Center Street and it's worse yet.
Go half a block up Center to Berkeley City College - the community college - and good luck getting any signal at all.
I'm using an iPhone 13 Pro. My spouse is too and reports the same awful coverage. I called Verizon about this from that location and after the call was dropped (!!!) they said they would escalate to some team or other and of course nothing happened.
I repeat: this is in the heart of Berkeley, where much of the technology of modern telecommunications was developed. I imagine quite a few people in Verizon leadership were educated here too. But the service is terrible!