Don't trust your phone on the islands.

It’s spotty at best, and often nonexistent away from towns and resorts. GPS works if you have a clear view of the sky and downloaded offline maps, but it won’t help you make a call.

Most populated islands have decent 4G/5G near hotels and main roads. But drive ten minutes inland or hike a mile off the beaten path, and you’re likely looking at no bars. Terrain blocks signals fast – mountains, dense foliage, even distance from the tower. Roaming can help if you’re coming from a carrier with a local partner, but it’s not a guarantee.

For emergency calls, forget it unless you have signal. 911 won’t connect without a tower. If you’re going anywhere remote, bring