Håfa Adai, Guam.Guam
eSIM.
Hello, traveler. — Plans from $6.23
Stay connected across Guam — the westernmost US territory in the Pacific — with 4G/LTE and 5G on T-Mobile and IT&E. Tumon Bay's resort strip, Two Lovers Point, Guam's World War II memorials, and the Chamorro villages are all on 4G/5G. Full US carrier compatibility with Pacific island charm.
Choose your plan
eSIM in 3 steps for Guam
Pick data amount and validity. Pay with card, Apple Pay, or Google Pay.
We email a QR code instantly. Scan it in Settings — installed in under 60 seconds. No app needed.
Your phone connects to local networks automatically when you arrive. No SIM swap, no kiosk. Hotspot included.
Coverage & connectivity.
T-Mobile and IT&E provide 4G/LTE and 5G across Guam's 544 km². Tumon Bay resort corridor — all major beachfront hotels — has 5G. The village of Hagåtña and the Plaza de España have 4G/5G. Two Lovers Point (Puntan Dos Amantes) has 4G. The War in the Pacific National Historical Park sites have 4G. Guam's southern jungle route (Cetti Bay Overlook, Umatac) has 4G on the main road. The Chamorro Village night market in Hagåtña has 4G. Antonio B. Won Pat International Airport has 5G. Being a US territory, Guam uses US carrier infrastructure and is fully compatible with US data plans.
Questions about Guam
Is Guam covered by US domestic phone plans?
Yes. Guam is a US territory and is covered by major US carrier domestic plans (T-Mobile, AT&T) without international roaming charges. A Flysimio Guam eSIM provides equivalent coverage for non-US travellers.
Is there 5G in Tumon Bay?
Yes. Tumon Bay resort corridor has 5G from T-Mobile. All major resort hotels are in 5G coverage.
Does this eSIM work at the WWII memorial sites?
Yes. The War in the Pacific National Historical Park sites — Asan Beach, Nimitz Hill, Piti Guns — all have 4G.
What currency does Guam use?
US dollar (USD). Guam is a US territory and uses all US currency, banks, and financial systems.
What time zone is Guam in?
Guam Standard Time (ChST) is UTC+10 — 15 hours ahead of the US East Coast (EST) and 18 hours ahead of the US West Coast (PST).
What is an eSIM?
An eSIM (embedded SIM) is a digital SIM built into your phone. Instead of a physical card, you scan a QR code and your plan installs instantly — no SIM tray needed.
Is my phone eSIM-compatible?
iPhone XS (2018) and newer, most Android flagships from 2020+, and all Samsung Galaxy S21+ devices support eSIM. Check our compatibility page for the full device list.
How do I install the eSIM?
After purchase, we email a QR code. On iPhone: Settings → Cellular → Add eSIM → Scan QR Code. On Android: Settings → Network & Internet → SIMs → Add eSIM. The whole process takes under 60 seconds.
Can I keep my regular SIM while using this eSIM?
Yes. Most phones support dual SIM (physical + eSIM). Keep your home number for calls and SMS — use Flysimio for data abroad. You control which SIM handles what in your phone Settings.
Does the eSIM include a hotspot (tethering)?
Yes, all Flysimio plans include mobile hotspot at no extra charge. Share your data connection with laptops, tablets, or other devices freely.
What happens when my data runs out?
You can top up data from your account dashboard at any time. Top-ups are applied instantly — no need to buy a new eSIM or wait.
Can I get a refund?
Yes. We offer a full refund within 14 days of purchase. Contact contact@flysimio.com with your order number.
How long is the eSIM valid for?
You have 6 months from your purchase date to activate the eSIM. Once activated, the plan validity period (e.g., 7 days, 30 days) begins counting down.
Will the eSIM work at the airport when I land?
Yes — as long as you installed the eSIM before your flight, it activates automatically when your phone connects to a local network on landing. No Wi-Fi required for activation.
What if the QR code doesn't scan?
If the QR code won't scan, you can enter the activation code manually — we include both in the email. You can also contact our 24/7 support team and we'll resend or manually provision your eSIM.
