Rubric Scorecard · GuamHelloRoam leads the Guam eSIM rankings at $3.50/GB on GTA's 4G LTE network, ahead of Airalo at $4.50/GB and Nomad at $3.00/GB. Airalo lists Guam from $3.74/GB, with its 20GB plan at $74.77. HelloRoam scores 9.5/10 on our published rubric. 6 plans ranked across 5 providers for Guam. Budget pick: HelloRoam at $3.50/GB. Unlimited option: Holafly at $2.99/day. GTA routes all 5 providers through 1 network in Guam. Airalo's catalogue starts at $3.74/GB, with its unlimited daily option at $14.19/day.
We evaluated eSIM options for Guam using provider plan data and GTA's network specifications. 2 carrier networks accept eSIM roaming connections in Guam: GTA and DOCOMO Pacific. 6 plans from 5 providers form the basis of our comparison. Pricing starts at $3.74/GB on 4G LTE.
Two carriers operate in Guam: GTA and DOCOMO Pacific. GTA publishes the wider footprint, and DOCOMO Pacific is the fallback where the primary map thins.
The pricing ladder spans from 1GB at $7.99 ($7.99/GB) to 20GB at $74.77 ($3.74/GB). Best per-GB value sits at 20GB for $74.77 ($3.74/GB), our recommended tier for most Guam travelers. Holafly adds an unlimited daily option from $2.99/day, which suits heavy data users on trips of 5+ days. All fixed-data plans deliver full 4G LTE speed until the data cap is reached, with no mid-plan throttling.
GTA's 4G LTE coverage spans Guam's main population centers and tourist corridors. Rural coverage depends on GTA's tower density in less populated areas.
HelloRoam scores 9.5/10 for Guam, the highest among 5 ranked providers. Airalo trails at 9.3/10. These scores reflect Guam-specific conditions: GTA routing, 6 available plans, and 4G LTE as the network standard. Rankings may differ for neighboring Oceania destinations where carrier partnerships and plan availability change.
The rubric ranked 6 eSIM plans from 5 providers for Guam on five dimensions: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), Support access (15%). Each provider takes a 1-5 mark per dimension, and the weighted total is doubled to give the /10 display score.
Scores for Guam use the published weighted formula: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), and Support access (15%). Each dimension receives a raw score from 1 to 5. The composite multiplies by 2 for a 0-10 display scale. Coverage and Pricing carry equal top weight because for travel eSIMs, network reach and cost matter most.
Country-specific adjustments for Guam: Single-carrier markets like Guam receive a ceiling of 4.0/5 on Coverage, since no failover redundancy exists. Unlimited plan availability in Guam adjusts the Pricing dimension to weight per-day unlimited rates alongside per-GB fixed rates. These calibrations keep scores comparable across the 185+ destinations in our database.
The scoring spread across 5 providers for Guam is 1.5 points (HelloRoam at 9.5/10 down to Nomad at 8.0/10). A spread under 1.5 points indicates that all providers deliver comparable service for this destination. The wider gap here reflects meaningful differences in pricing, coverage, or support quality.
BesteSIM runs no speed tests and publishes no throughput figure for Guam. The network-tier score reads the technology each carrier publishes, which is 4G LTE here.
Guam has 1 mobile network: GTA Wireless (4G). GTA delivers the strongest coverage combination. All 5 providers route through these carriers.
Guam operates 1 mobile network: GTA Wireless (4G). GTA serves as the primary routing partner for travel eSIMs in this market. All five ranked providers route exclusively through GTA. Single-carrier markets offer no failover, which affects the Coverage dimension of our scoring.
GTA publishes 4G LTE across Guam, and every ranked provider attaches to it rather than to a network of its own. Single-carrier coverage means no automatic failover. Coverage quality depends entirely on GTA's tower infrastructure and geographic reach in Guam.
Carrier selection in Guam is largely predetermined by GTA's dominant roaming agreements. Providers compete on plan structure, pricing, and service quality rather than network access. Coverage scores follow the published partner list rather than anything measured on the ground.
Plans and pricing for Guam were last verified in May 2026. All 6 plans confirmed active on GTA's 4G LTE network. Provider scores reflect the most recent data available for this destination.
We review Guam rankings quarterly and after any major network change (carrier merger, 5G rollout, new provider entry). Price updates are checked monthly. If GTA launches a new network tier or a provider adjusts Guam plan pricing, scores are recalculated within 2 weeks.
Choose HelloRoam for the combination of broad 186-country coverage and competitive per-GB pricing. Our highest-scoring provider of 2026 at 9.5/10. The localized currency support is a differentiator for travelers outside the US dollar zone. For unlimited data, Holafly remains stronger. For the widest country count, Airalo covers 200+.
HelloRoam routes through GTA in Guam, delivering 4G LTE speeds. The best-value plan is 20GB at $74.77 ($3.74/GB).
| Dimension | Weight | Raw Score | Weighted |
|---|---|---|---|
| Coverage | 25% | 4.9/5 | 9.8/10 |
| Speed | 20% | 4.7/5 | 9.4/10 |
| App | 15% | 4.7/5 | 9.4/10 |
| Pricing | 25% | 4.8/5 | 9.6/10 |
| Support | 15% | 4.5/5 | 9.0/10 |
| Total | 100% | 9.5/10 |
HelloRoam earns the Guam pick at 9.5/10, with the top mark on network tier, pricing and support. Its published entry rate is $3.50/GB, which no rung on this ladder beats, the closest being 20GB at $3.74/GB.
Airalo follows at 9.3/10, 0.2 points back, and the ladder this page quotes is Airalo's own Guam catalogue, which bottoms out at $3.74/GB.
Airalo's recommended plan for Guam: 20GB at $74.77 ($3.74/GB). A moderate traveler using 1.5GB/day for 7 days needs 11GB. The 20GB plan covers that with headroom.
Get HelloRoam for Guam →Airalo outscores HelloRoam in Coverage (10.0 vs 9.8), App (9.8 vs 9.4).
Airalo trails HelloRoam on Speed, Pricing, Support.
| Dimension | HelloRoam | Airalo | Winner |
|---|---|---|---|
| Coverage | 9.8/10 | 10.0/10 | Airalo |
| Speed | 9.4/10 | 9.0/10 | HelloRoam |
| App | 9.4/10 | 9.8/10 | Airalo |
| Pricing | 9.6/10 | 8.8/10 | HelloRoam |
| Support | 9.0/10 | 8.6/10 | HelloRoam |
Choose Airalo for the widest coverage (200+ countries) and the strongest app experience. Ideal for multi-country itineraries. Full Airalo review.
Light travelers visiting Guam for 1-3 days. Maps, messaging, and email only. Around 0.5GB/day usage. First-time eSIM users wanting a low-risk trial. The cheapest plan is 1GB at $7.99.
The 1GB plan costs $7.99. The best-value 20GB plan costs $74.77 at $3.74/GB. You pay $66.78 more but get 20.0x the data.
Airalo lists an unlimited daily option for Guam at $14.19/day with a 2GB fair-use threshold.
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 | $13.62 | $13.62 | 4% |
| 3 | $39.16 | $13.05 | 8% |
| 7 | $91.38 | $13.05 | 8% |
| 14 | $176.81 | $12.63 | 11% |
| 30 | $349.07 | $11.64 | 18% |
Unlimited costs less than the largest fixed plan after 6 days. If you use more than 3.3GB per day, unlimited wins on value. For trips under 6 days with moderate usage, a fixed plan saves money.
A travel eSIM in Guam attaches to GTA on 4G LTE. All 5 ranked providers ride that same host network rather than one of their own, so the network under a HelloRoam plan and the network under an Airalo plan is the same equipment. GTA is the only operator on the published list for Guam, which removes any fallback if it drops. This site publishes no throughput figure, because it runs no speed test.
GTA publishes 4G LTE service in Guam, and every eSIM sold for this destination attaches to it. BesteSIM runs no speed test, so there is no download figure on this page: the network-tier score reads the published technology instead.
Network profile: GTA publishes 4G LTE across Guam. All 6 plans ride that same carrier at that same tier.
4G LTE carries HD streaming, video calls, and navigation.
Purchase your Guam eSIM from the provider app or website. Scan the QR code over WiFi at home. The eSIM installs in under 2 minutes. Label the new line "Guam Data" to keep it separate from your home SIM.
When you land in Guam, enable data roaming on the eSIM line. Your phone connects to GTA's 4G LTE network within 30 seconds. No ID verification is needed for travel eSIMs in Guam.
Buy the 20GB plan from HelloRoam online.Scan the QR code over WiFi. Label the new line "Travel Data." Set as your data line. Keep your home SIM for calls. Activation completes in under 3 minutes.
iOS: Settings > Cellular > Add eSIM > Scan QR Code. Rename to "Guam Data." Set as default data line.
Android: Settings > Connections > SIM Manager > Add eSIM. Rename to "Guam Data." Set as default data line.
Turn off airplane mode. Check status bar for GTA. Open a browser to verify data works. Run a speed check at fast.com. Keep home SIM data roaming OFF.
Coverage verdict for Guam: Basic. Guam has limited eSIM infrastructure that covers major cities only. 1 carrier network accept eSIM roaming, with GTA providing primary coverage on 4G LTE. Coverage holds in urban centers and along major transport corridors.
Single-carrier coverage means dead zones are possible in rural areas. Download offline maps and save boarding passes before leaving urban zones.
Based on Guam's coverage profile, we recommend the 20GB plan at $74.77 ($3.74/GB). Plan for 1-2GB per day for typical travel use. GTA's 4G LTE network supports all common travel tasks in covered areas. Pre-download critical maps and documents regardless of coverage quality. It is the single best preparation step for any eSIM trip.
Coverage assessment: 1 network accept eSIM roaming in Guam. GTA provides primary coverage for urban and tourist areas.
Guam has 1 mobile network. City center coverage on GTA's 4G LTE network is reliable. All 5 providers route through these carriers.
Coverage outside major cities depends on carrier reach. Rural areas may fall back to 4G speeds. Download offline maps before leaving urban areas.
Oceania destinations present unique coverage challenges due to geographic spread. Guam's eSIM infrastructure handles the main population corridors well, with GTA providing primary coverage.
Guam operates on 4G LTE for eSIM travel connections. GTA is the primary carrier handling roaming agreements.
Google Maps and Waze use 5-10MB per hour of active navigation. On GTA's 4G LTE network, maps load in under 2 seconds. The 20GB plan at $74.77 covers 2-3 weeks of daily navigation.
WhatsApp, FaceTime, and Zoom run smoothly on 4G LTE in Guam. A 30-minute video call uses roughly 270MB. Hotel WiFi supplements your eSIM data for large downloads.
HD video streaming uses about 1.5GB per hour on GTA's network. Holafly's unlimited plan from $2.99/day handles heavy streaming without data caps.
The 20GB plan delivers the strongest value at $3.74/GB for Guam. Budget travelers can start with 1GB at $7.99. Both tiers connect through GTA's 4G LTE network with identical speed access.
Unlimited data costs $14.19/day for Guam. For trips under 6 days, a fixed plan wins on cost. Longer stays or heavy data usage tips the balance toward unlimited.
HelloRoam leads our Guam value ranking with a 9.5/10 editorial score. 5 providers compete for Guam. The published ladder starts at $3.74/GB.
Guam eSIM pricing on GTA: 1GB: $7.99 ($7.99/GB), 3GB: $12.71 ($4.24/GB), 5GB: $19.95 ($3.99/GB), 10GB: $39.87 ($3.99/GB), 20GB: $74.77 ($3.74/GB). Larger plans reduce the per-GB cost. All prices are one-time with no auto-renewal.
Unlimited option: $14.19/day with no data cap (2GB at full speed). Multi-day discounts available: the 30-day plan costs $11.64/day.
HelloRoam scores 9.5/10 on an entry rate of $3.50/GB, and the best rung on the Guam ladder is 20GB at $3.74/GB, above that. Every provider here rides the same host networks in Guam: GTA Wireless on 4G, plus GTA and DOCOMO Pacific.
Airalo scores 9.3/10 on an entry rate of $4.50/GB, and the ladder on this page is its own Guam catalogue: $7.99 for 1GB up to $74.77 for 20GB, bottoming out at $3.74/GB.
Holafly scores 8.9/10 and sells unlimited only, at $2.99/day, so the comparison is a break-even: under 26 days that costs less than the 20GB rung's $74.77, and past it costs more.
Saily scores 8.4/10 on an entry rate of $3.99/GB, and 1 of the 5 rungs on the Guam ladder cost less per gigabyte than that.
Nomad scores 8.0/10 on an entry rate of $3.00/GB, and Airalo's catalogue floor for Guam is $3.74/GB, over that.
Guam ranks in the mid tier for eSIM infrastructure in Oceania. 1 network accept eSIM roaming, with GTA providing the primary routing for all 5 providers.
Per-GB pricing in Guam starts at $3.74, which is moderate for the Oceania region. 6 plans are available across providers, including unlimited daily data at $14.19/day.
General travelers: HelloRoam at 9.5/10. The best overall pick for Guam.
Heavy data users: Holafly with unlimited data from $2.99/day. Best for streaming, video calls, and remote work.
Budget travelers: HelloRoam starting at $7.99.
Privacy-conscious: Saily with built-in VPN from Nord Security.
| Provider | Coverage | Speed | App | Pricing | Support | Total |
|---|---|---|---|---|---|---|
| Top score HelloRoam | 9.8 | 9.4 | 9.4 | 9.6 | 9.0 | 9.5/10 |
| Airalo | 10.0 | 9.0 | 9.8 | 8.8 | 8.6 | 9.3/10 |
| Holafly | 8.6 | 8.8 | 8.6 | 9.4 | 9.0 | 8.9/10 |
| Saily | 8.0 | 9.0 | 9.0 | 8.2 | 7.8 | 8.4/10 |
| Nomad | 7.4 | 8.2 | 7.8 | 9.2 | 6.8 | 8/10 |
HelloRoam scores 9.5/10. 20GB at $74.77. GTA 4G LTE network.
See which eSIM wins in other Oceania countries.
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