[djchen]

Comcast's Xfinity Mobile allows non-CDMA iPhones on its network (through Verizon). They will only connect to Verizon's LTE network and is unable to access its CDMA network.

I suspect Boost could do the same.

[scarface74]

Which is also not a great thing when you travel outside of major cities.

[djchen]

Verizon, T-Mobile, and Sprint each have more LTE coverage than 3G/CDMA. (AT&T is the exception with more 3G coverage)

Source: https://www.whistleout.com/CellPhones/Guides/sprint-coverage...