>Direct to Cell works with existing LTE phones wherever you can see the sky.
No new antennas implies we're in the 1-6 GHz region. Should be fine?
Having had starlink before, yes. I needed a direct line of sight to the sky to receive service.
This service uses a different radio link using LTE. That’s why you don’t need the dish. They had to launch new satellites with the extra radio gear. So your past experience is not necessarily representative.