Hi all.

Former Fi user here... just recently re-activated. Some things have changed since, so wondering what to do:

1- Sprint & TMo are combined now correct? So there is no "switching" between them to get better service? Basically, whatever service (bars) I have, I have? No need for a Signal Spy app, etc to get better service in areas with less bars. Correct?

2- I have the new 4a 5G phone. It has an eSim and a regular SIM phone. Never had a dual sim phone before. Google Fi is the eSim portion and I have a new # tied to that account. I believe this means I can take my current # (with AT&T) and just pop the SIM card out of my old phone and pop it into the new 4a 5G phone and now I'll have 2 numbers on the one new phone, correct? Do I need to notify AT&T for any reason?

3- I further believe I can only use 1 number at a time on the Pixel 4a 5g, correct? How does one toggle between the 2 #s?

4- When toggling, I assume each # is tied to its own WhatsApp, Signal, etc., correct? So I need to sign up for those types of services with my new #, correct?

Fingers crossed Fi has decent service in my area... reason I cancelled years ago was inability to place calls in many areas. We shall see if the years were kind to Tmo/Sprints network.