Does my eSIM also work in the rural areas of Guam, such as the National Park?

Guam National Park, in the northern part of the island, falls within the areas covered by the 4G/LTE network, although in some wooded areas the signal may be weaker. In general, the 90% coverage guarantees connectivity along the main tourist and nature routes.

Guam is American territory: can I use my eSIM as if I were in the United States?

Guam is a US unincorporated territory, yet standard eSIMs do not include it in their US domestic plan. To have data at affordable prices on the island, you must buy a plan made for Guam or Oceania, like the ones on Datiovunque.

What is the time difference between Rome and Guam? How do I handle calls with Italy?

Guam is on UTC+10, which is 9 hours ahead of Rome during daylight saving time and 10 hours ahead in standard time. It is best to plan calls with people in Italy for the early hours of the morning in Guam, when it is still the evening of the previous day in Rome.

I have a smartphone with a European charging plug: can I charge the phone in Guam?

On Guam the sockets are Type A and B (the flat American kind, at 120V), unlike the Schuko sockets used in Italy. A universal adapter will be needed. The eSIM, though, is handled entirely digitally, which means that activating it calls for no physical connector of any kind.

How long does it take to reach Guam from Italy and are there direct flights?

There are no direct flights from Rome to Guam. The journey requires one or two stopovers — typically in Tokyo Narita, Seoul Incheon or Hong Kong — for a total travel time of about 20-24 hours. Activating the eSIM before leaving lets you be connected from the very first stopover.

How much does an eSIM for Guam cost?

eSIM plans for Guam start from €7.69. You pay once for the amount of data you choose — no subscription, no monthly fees and no hidden roaming charges. Plans with more data or longer validity cost more.

Is an eSIM or roaming better in Guam?

A local eSIM in Guam is almost always much cheaper than the roaming of your Italian operator. In the European Union roaming is often already included ("Roam Like at Home"), but outside the EU the costs can be very high — with an eSIM you know the price in advance and pay only for the data plan you need.

Which operator or network does the eSIM use in Guam?

The eSIM in Guam connects automatically to local networks such as GTA TeleGuam, Docomo Pacific, GTA Teleguam, IT&E — on 4G/LTE and, where available, 5G. Coverage reaches about 90% in inhabited areas. Your phone picks the best available network by itself.

Can I keep my Italian number with the eSIM in Guam?

Yes. Your Italian SIM and number stay active — the travel eSIM works alongside it as a data-only line. You stay reachable on WhatsApp, iMessage or Wi-Fi while you use the local network to browse. Traditional calls and SMS still go through your Italian number.

Should I activate the eSIM before or after I leave?

Install the eSIM at home, on Wi-Fi, before you leave. The data plan then activates automatically when you connect in Guam. That way you are online as soon as you arrive, without looking for airport Wi-Fi or buying a local SIM.

Can I top up or renew the plan for Guam?

Yes. When the data runs out or the validity expires, just buy a new plan — the eSIM profile already installed is kept and does not need to be installed again. You stay connected without interruption.

Can I share the connection (hotspot) in Guam?

Yes. You can share the connection in Guam through a personal hotspot with a computer, tablet or other devices. Shared data is deducted from your plan, so allow a few extra gigabytes if you expect to use the hotspot often.

eSIM plans for Guam

Instant delivery

Your eSIM for Guam is available from €7.69 and active straight away: in Guam it connects to the GTA TeleGuam, Docomo Pacific, GTA Teleguam, IT&E networks (4G/LTE, 5G where available), coverage 90%. Install it by QR code before you leave — no roaming and no SIM swap.

Your selection

Select a plan

Payment methods

Instant email delivery
30-day returns
Support in Italian
Visa · Mastercard · PayPal (including Pay in 3) · Apple Pay · Google Pay · Satispay

eSIM for Guam — at a glance

From: €7.69
Local networks: GTA TeleGuam, Docomo Pacific, GTA Teleguam, IT&E
Technology: 4G/LTE
Network coverage: 90%
Activation: QR code — install before you leave
Recommended data: 1–3 GB light use · 5 GB with social media · 10 GB+ streaming

All eSIM plans for Guam

Data	Validity	Price
Unlimited	1 day	€7.69
Unlimited	3 days	€7.99
Unlimited	5 days	€18.99
Unlimited	7 days	€17.99
Unlimited	10 days	€24.99
Unlimited	15 days	€36.99
Unlimited	30 days	€68.99
1 GB	7 days	€7.99
2 GB	15 days	€14.99
3 GB	30 days	€21.99
5 GB	30 days	€28.99
10 GB	30 days	€54.99
20 GB	30 days	€76.99
50 GB	30 days	€195.99

Surprises abound on Guam, an American territory in the heart of the Pacific Ocean, with white-sand beaches like Tumon Bay, tropical forests and a history that interweaves Chamorro, Spanish and American cultures. To get here from Rome you cover nearly 13,000 kilometres and cross eleven time zones, a journey that deserves every minute. Yet once you have landed at Antonio B. Won Pat International Airport, the last thing you want is to look for a desk selling local SIMs. With a Datiovunque eSIM already active on your smartphone, you are online before collecting your baggage, ready to surf on 4G/LTE on the Pacific island.

Flight time from Rome

~20-24 hours (with a stopover)

Time zone

UTC+10 (9/10 hours ahead of Rome)

Best season

December–June (dry season)

Power socket

Type A/B (120V) — adapter needed

Why use an eSIM in Guam

Guam is geographically remote and, despite being US territory, local physical SIMs are not easy to find everywhere: the main retailers of GTA TeleGuam, Docomo Pacific and IT&E are concentrated mostly in Tamuning and Hagåtña, far from many tourist facilities. With an eSIM activated before leaving Rome you avoid this logistical search completely. 4G/LTE coverage reaches 90% of the territory, guaranteeing a stable connection along the coasts, in nature reserves and even in the island's interior. Considering that Guam is eleven hours ahead of Rome, being able to share photos and messages in real time with relatives and friends — without waiting to find reliable Wi-Fi — is a concrete advantage. In addition, no socket adapter is needed: managing the connection digitally removes at least one problem from the list.

Network coverage in Guam

Operator

GTA TeleGuam

+ Docomo Pacific

Technology

4G/LTE

Coverage

90%

Installing an eSIM for Guam: how does it work?

1
Buy the plan
Choose the right data plan for Guam and complete your purchase.
2
Scan the QR code
Open the email that holds the QR code and point your smartphone's camera at it.
3
Activate the eSIM
Follow your device's instructions to add the eSIM as a data plan.
4
Start browsing
Turn the eSIM on once you land in Guam and get online straight away.

1
Buy the plan
Choose the right data plan for Guam and complete your purchase.
2
Scan the QR code
Open the email that holds the QR code and point your smartphone's camera at it.
3
Activate the eSIM
Follow your device's instructions to add the eSIM as a data plan.
4
Start browsing
Turn the eSIM on once you land in Guam and get online straight away.

Which eSIM plan fits you best?

Holidaymakers

Going away for 1-2 weeks? Pick a plan with 3-5 GB for maps, photos and messages.

Business travellers

For video conferencing and email while travelling, we suggest at least 5 GB or an unlimited plan.

Backpackers

A longer trip is better served by 10+ GB, or by a regional plan that spans multiple countries.

Families

For families with several devices we recommend a plan with tethering support and enough data.

Which suits Guam best: an eSIM, a local SIM or a Wi-Fi hotspot?

	eSIM	Local SIM	Wi-Fi hotspot
Activation	Instant (QR code)	Bought locally	Pick-up/delivery
Setup	2 minutes	SIM swap needed	Extra device
Price	From €7.69	€5–30	€5–15/day
Network	Local 4G/LTE	Local 4G/LTE	Local 4G/LTE
Devices	1 smartphone	1 smartphone	Up to 5 devices
Flexibility	Top up at any time	Fixed data allowance	Daily rental
Recommended	Ideal for travellers	For long stays	For groups/families

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