Is there cell phone coverage on the Galapagos Islands?
Yes, there is some cell phone coverage in Galapagos, but it is scarse and usually rather poor quality. You can expect your phone to work in and around the main centers of commerce and population: Baltra Island, most of Santa Cruz Island (especially Puerto Ayora), San Cristobal (especially Puerto Baquerizo Moreno) and a few southern parts of Isabela (especially around Puerto Villamil). On a Galapagos cruise, however, you can expect to lose cell phone coverage as soon as you leave port - there is no network on the open ocean or near the uninhabited islands.
If you need mobile internet on your phone, we recommend buying a SIM card/chip on the mainland. The best idea is to get one from one of the shops at Quito airport.
In our experience, the network with the best coverage on the Galapagos Islands is CLARO.