Also US Cellular. They have a smaller footprint, but I’ve been places where my Verizon phone had no signal and my Google Fi phone did pick up US Cellular.

Whatever % Sprint and T-Mobile cover, Fi uses both their networks

Google says some videos may be automatically set to 480p resolution even before the 22GB threshold is crossed to reduce data use.

I was looking at switching the Verizon, and then Fi announced this. For my family this is a much better deal for 1 reason, unlimited SIM cards. I can get a Sim card for my old phones and give them to my kiddos for Netflix and Minecraft, and not have to give them my phone.