Originally Posted by travelovingnurse
We definitely found Verizon to have the best service on Kauai. My DH had Verizon and he had service anywhere on the island, but DD had Sprint and had no coverage and I had At&T and only had coverage in the Poipu area. Kauai was the only island that this was true for us. Everyone had good coverage on Maui and Oahu.
I found AT&T's digital service in the past was spotty. However, the new GSM system has very good coverage in Kauai.