HelloRoam is the only provider in this comparison with a verified Guam price, at $7.99 for 1 GB over 7 days on GTA Wireless 4G. Airalo lists 200 destinations to HelloRoam's 185 and publishes no Guam rate here. The catch is the network: all 6 plans ride GTA Wireless, so DOCOMO Pacific is out of reach.
HelloRoam runs its Guam plans on GTA Wireless, the island's main operator, which is why the recommendation holds right across Tumon Bay: GTA is the carrier with 4G on every hotel tower, at Micronesia Mall, and on the beach itself. DOCOMO Pacific also covers the island and is popular with Japanese travelers, but it carries no visitor eSIM plans in this catalogue. GTA Wireless reaches further for international visitors than DOCOMO Pacific does, reaching Tumon Bay, Hagåtña, the southern villages, and the main highway corridors, and it is the single network listed on all 6 Guam plans.
커버리지 분석
GTA Wireless 4G LTE covers Tumon Bay's entire resort strip including the major hotel towers, shopping malls like Micronesia Mall and GPO, and the beach. Antonio B. Won Pat International Airport connects on arrival.
Hagåtña capital district has solid 4G. Route 1 along the west coast from Tumon to Merizo has consistent coverage. Two Lovers Point and Ritidian Point at the island's north tip both have 4G.
The Mariana diving sites on the west coast are accessible via 4G-covered shore areas.
개통 방법
Scan your eSIM QR code before arriving at Antonio B. Won Pat International Airport (GUM). GTA Wireless registers the profile on arrival, so there is no SIM counter to queue at in the terminal.
Guam uses US-standard time zones and the US dollar. iPhone XS or newer, Pixel 3a or newer, and Galaxy S20 or newer support eSIM. Your device must be carrier-unlocked.
데이터 절약 팁
Budget 450-550 MB per day at Tumon Bay resorts for shopping navigation, resort booking apps, social media, and Google Maps for the military history sites in the south. The Guam Shopping Festival and tax-free electronics stores on Tumon's main strip are easy to navigate on 4G. Diving bookings with local operators use minimal data.
A 7-day plan comfortably covers a standard Guam resort holiday. Download War in the Pacific National Historical Park guides offline for the southern tour route.
Guam eSIM 요금제 가격
Guam eSIM plans start at $7.99 for 1 GB over 7 days on GTA Wireless. The 3 GB plan costs $12.71 and the 5 GB plan $19.95, both over 30 days. The 10 GB plan at $39.87 suits a photo-heavy resort holiday, and the 20 GB plan at $74.77 gives $3.74/GB across the 6.
A 2 GB per day plan costs $14.19, with a fair-use speed reduction once the daily allowance is spent. Verdict: HelloRoam prices Guam from $7.99 for 1 GB on GTA Wireless 4G, the one network an eSIM buyer reaches on the island.
All 6 Guam eSIM plans from $7.99 for 1 GB
Guam 20GB 30Days
GTA Wireless (4G)30일충전 가능
₩103,183
20 GB · 30일
GB당₩5,159
테더링가능
네트워크GTA Wireless
Guam 10GB 30Days
GTA Wireless (4G)30일충전 가능
₩55,021
10 GB · 30일
GB당₩5,502
테더링가능
네트워크GTA Wireless
Guam 5GB 30Days
GTA Wireless (4G)30일충전 가능
₩27,531
5 GB · 30일
GB당₩5,506
테더링가능
네트워크GTA Wireless
Guam 3GB 30Days
GTA Wireless (4G)30일충전 가능
₩17,540
3 GB · 30일
GB당₩5,847
테더링가능
네트워크GTA Wireless
Guam 1GB 7Days
GTA Wireless (4G)7일충전 가능
₩11,026
1 GB · 7일
GB당₩11,026
테더링가능
네트워크GTA Wireless
Guam 전체 eSIM 요금제. 가격 확인일: 2026년 9월 20일.
요금제
네트워크
유효 기간
가격
Guam 20GB 30Days ⭐
GTA Wireless
30일 / 20 GB
₩103,183
Guam 10GB 30Days
GTA Wireless
30일 / 10 GB
₩55,021
Guam 5GB 30Days
GTA Wireless
30일 / 5 GB
₩27,531
Guam 3GB 30Days
GTA Wireless
30일 / 3 GB
₩17,540
Guam 1GB 7Days
GTA Wireless
7일 / 1 GB
₩11,026
Guam 2GB/Day공정 사용 정책
GTA Wireless
1일 / 하루 2 GB
₩19,582
Prices verified: 2026년 9월 20일
Guam eSIM questions answered
What is the best eSIM for Guam?
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HelloRoam is the only provider in this comparison with a verified Guam price. HelloRoam sells 6 plans on GTA Wireless 4G, from $7.99 for 1 GB to $74.77 for 20 GB, which is $3.74/GB, and the 5 GB plan at $19.95 covers a resort week. The catch is that GTA Wireless is the sole network, so DOCOMO Pacific is out of reach.
Which eSIM should I buy for Guam?
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HelloRoam sells 6 Guam eSIM plans on GTA Wireless 4G. A week in Tumon Bay fits the 3 GB plan at $12.71 or 5 GB at $19.95. Heavy users take 10 GB at $39.87 or 20 GB at $74.77, which is $3.74/GB. Transit passengers take the 2 GB per day plan at $14.19. GTA Wireless is the only network on file for Guam.
How much does an eSIM for Guam cost?
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HelloRoam sells eSIM plans for Guam. Guam eSIM plans cost $7.99 for 1 GB over 7 days, $12.71 for 3 GB, $19.95 for 5 GB, $39.87 for 10 GB, and $74.77 for 20 GB, which works out at $3.74/GB. A 2 GB per day plan costs $14.19. All 6 plans run on GTA Wireless 4G and support hotspot tethering and top-ups.
Which network does an eSIM use in Guam?
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HelloRoam sells eSIM plans for Guam. All 6 Guam eSIM plans connect to GTA Wireless, formerly the Guam Telephone Authority, the island's primary 4G carrier. GTA covers the major tourist areas including Tumon Bay, Hagåtña, and the main highway corridors down to Merizo. DOCOMO Pacific also operates on the island and is popular with Japanese visitors, but carries no plans in this catalogue.
Is Guam a US territory for mobile coverage purposes?
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HelloRoam sells eSIM plans for Guam. Guam is a US unincorporated territory, but US domestic mobile plans usually treat it as international roaming. AT&T, T-Mobile, and Verizon customers should check their own Guam rate before landing. A dedicated Guam eSIM on GTA Wireless, from $7.99 for 1 GB over 7 days, prices the data up front instead of on your home bill.
Is there 4G at Tumon Bay's resorts?
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HelloRoam sells eSIM plans for Guam. Yes. GTA Wireless 4G LTE covers the whole Tumon Bay resort strip, including every major hotel tower, Micronesia Mall, the GPO shopping center, and the beachfront itself. Signal holds for social media, streaming, and maps across the district. All 6 Guam plans use the same GTA network, so coverage does not change with plan size.
Can I use eSIM while shopping duty-free in Guam?
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HelloRoam sells eSIM plans for Guam. Yes. GTA Wireless 4G covers the shopping malls and tax-free stores across Tumon and Hagåtña, so comparison apps, exchange-rate calculators, and social media all work while you shop. Data holds inside Micronesia Mall, Guam Premium Outlets, and T Galleria by DFS. A 3 GB plan at $12.71 covers a week of that use.
Does my phone support eSIM in Guam?
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HelloRoam sells eSIM plans for Guam. iPhone XS or newer, Pixel 3a or newer, and Samsung Galaxy S20 or newer support eSIM in Guam on GTA Wireless. Your device must be carrier-unlocked, and phones bought on a US carrier contract are often locked until the contract is settled. Check with your carrier before departing. All 6 Guam plans install from a QR code.
How much data do I need for a week in Guam?
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HelloRoam sells eSIM plans for Guam. A typical Tumon Bay resort holiday uses 450 to 550 MB per day for maps, shopping apps, social media, and dive bookings. A 7-day trip lands near 3.5 to 4 GB at that rate, which the 5 GB plan at $19.95 covers. Travelers who share photos constantly or tether a laptop step to 10 GB at $39.87.
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