You don't need a local contract, an ID check or a shop visit. A JamboSim Guam eSIM connects to GTA's network the moment you land: buy it online, scan the QR once, from $4.50 and with no roaming bills.
GTA is a major Guam mobile operator, with strong coverage across cities and popular travel destinations.
When you activate a JamboSim Guam eSIM, your phone connects to GTA (or another supported local network) the moment you arrive, no app install, no manual APN setup. You keep your regular number on WhatsApp and iMessage while data runs on the local network.
GTA operates a modern 5G network across Guam's major cities, with 4G LTE everywhere else.
Buy now, scan once, your Guam eSIM activates automatically when you land.
Tested on the routes travellers actually use, airports, hotels, transit hubs and tourist districts.
Your eSIM picks GTA automatically where available, and falls back to other supported networks seamlessly.
Most UK and US plans treat Guam as a rest-of-world destination, so data outside your bundle is billed per megabyte. A JamboSim eSIM on GTA replaces that with one price you pay before you fly.
EE, Vodafone, O2 and Three, and in the US Verizon, AT&T and T-Mobile, all charge a daily or per-MB rate for Guam. Your GTA data runs on a local plan instead, with no bill shock when you get home.
Buying a GTA SIM in Guam usually means a passport copy, a registration form and a queue at the airport. The eSIM is installed before departure and connects on landing.
You pay in your own currency and our support team answers in English, seven days a week, including install help for GTA.
Yes, every iPhone XS and newer supports eSIM and GTA's network bands in Guam. Install the JamboSim eSIM before you fly and it activates automatically on arrival.
Yes. Our Guam eSIMs are configured to use GTA where its signal is available, and fall back to other supported local networks automatically if coverage is weaker.
Yes. All JamboSim Guam eSIMs support hotspot so you can share your connection with a laptop, tablet or travel companion without extra fees.