I have a Pinephone Pro. It takes a Nano SIM. I put one in. It’s from Public Mobile, which is an offshoot of Telus. I followed the instructions here to set up the APN: PinePhone APN Settings - PINE64
It seems fine, but I cannot use the dialler. I’ll try to dial a number, but it does not go through. Texting, on the other hand, does work (via the Spacebar program).