When cruising in the “lower 49” states have found Verizon offers excellent coverage and good value PAYG plans. However this does not extend to Alaska where those on a Verizon PAYG plan do not have access to shared masts and coverage is  strictly limited to the larger towns and cities.

AT&T offer more extensive coverage in Alaska and in 2018 had some excellent value PAYG schemes , including one offering unlimited calling and data on the phone, and a 20 Gb allowance for mobile hotspot tethering on other devices. The AT&T scheme is valid for both the US and Canada making it particularly useful for those cruising the BC and Alaskan coasts in a single season.