Visiting Guam for a beach holiday, diving trip, or Pacific island getaway? A MobiSIM eSIM for Guam helps you stay connected without needing to buy a physical SIM card after arrival. Whether you are staying in Tumon, Hagåtña, Tamuning, Dededo, Mangilao, or exploring beaches, diving sites, historic war memorials, and local markets, MobiSIM gives you mobile data for maps, hotel bookings, restaurant searches, messaging, travel updates, and sharing your trip online. Choose a MobiSIM eSIM data plan for Guam and get 4G/5G coverage where available through supported local networks. Activation is quick and digital: after purchase, your QR code is sent by email, then you scan it and follow the setup steps on your device. Your existing SIM can stay active for calls while MobiSIM provides data during your stay.
eSIM for Guam — Instant 4G/5G Data Plans
7 plans available — from €49.99. Instant activation, no physical SIM required.
Useful travel information
A few details that help before and during your trip.
Mobile coverage in Guam
Guam's mobile network is served by two main operators: IT&E and GTA (Guam Telephone Authority), both providing 4G LTE coverage across Tumon, Hagåtña, Tamuning, and the main populated and tourist areas of the island. As a US territory, Guam's telecommunications infrastructure is regulated under US standards and coverage across the island's main settled areas is generally reliable. More remote southern areas including Cocos Island, Inarajan natural pools, and some southern coastal and jungle zones may have weaker signal depending on terrain and distance from transmitters. MobiSIM connects through supported local networks to deliver reliable mobile data throughout Guam's main tourist and residential areas.
