Testing Report · GuamHelloRoam earns our 2026 Guam pick at $3.74/GB on GTA Wireless's 4G LTE network. The 20GB plan costs $74.77, scored 4.8/5 across coverage, speed, and pricing. 6 plans ranked across 5 providers for Guam. Budget pick: Nomad at $3/GB. Unlimited option: Holafly at $14.19/day. GTA Wireless routes all 5 providers through 1 network in Guam. Plans start at $3.74/GB, with unlimited daily data at $14.19/day.
We evaluated eSIM options for Guam using provider plan data and GTA's network specifications. 1 carrier network accept eSIM roaming connections in Guam: GTA Wireless. 6 plans from 5 providers form the basis of our comparison. Pricing starts at $3.74/GB on 4G LTE.
GTA is the sole eSIM-accepting carrier in Guam. All five providers route through this single network, which means coverage depends entirely on GTA's infrastructure.
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 at $14.19/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.
We ranked 6 eSIM plans from 5 providers for Guam across five dimensions: Coverage (25%), Pricing (25%), Speed (20%), App Quality (15%), Support (15%). Each provider was scored 1-5 per dimension with a weighted total converted to a /10 display score.
Scores for Guam use our standard weighted formula: Coverage (25%), Pricing (25%), Speed (20%), App quality (15%), and Support (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.
Read our full testing methodology.
Speed scores use provider-reported network data. We have not independently measured download speeds in Guam.
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's 4G LTE infrastructure delivers speeds consistent with the Oceania regional average for travel eSIM connections. 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 correlate directly with GTA's tower density.
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 our Guam editorial pick with a 9.5/10 composite score. The score reflects coverage (4.9/5), pricing (4.8/5), speed (4.7/5), app quality (4.7/5), and support (4.5/5).
Airalo follows at 9.3/10, 0.2 points behind on our weighted scale. Both providers route through GTA in Guam, so the difference comes down to pricing, app polish, and support response times.
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.
Holafly offers unlimited daily data in 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.
Guam eSIMs connect to GTA's 4G LTE network. Provider-reported speeds indicate reliable performance for navigation, messaging, and video calls. All 5 providers share the same GTA routing.
Provider-reported speeds indicate 4G LTE access on GTA's network in Guam. We have not independently measured download speeds for this destination.
Speed profile: GTA Wireless delivers 4G LTE connectivity across Guam. All 6 plans share the same carrier infrastructure and speed tier.
4G LTE speeds support standard browsing and messaging comfortably.
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 HelloRoamonline. 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 "GuamData." Set as default data line.
Android:Settings > Connections > SIM Manager > Add eSIM. Rename to "GuamData." 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 Wireless 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 at $14.19/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 this destination, with per-GB rates from $3.74 upward.
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 for Guam. Plans from $3.74/GB. Routes through GTA's 4G LTE network. Editors Choice. 14-day refund.
Airalo scores 9.3/10 for Guam. Plans from $3.74/GB. Routes through GTA's 4G LTE network. Widest Coverage. 14-day refund.
Holafly scores 8.9/10 for Guam. Unlimited data at $14.19/day. Routes through GTA's 4G LTE network. Best Unlimited. 6-month refund.
Saily scores 8.4/10 for Guam. Plans from $3.74/GB. Routes through GTA's 4G LTE network. Best Privacy. 30-day refund.
Nomad scores 8.0/10 for Guam. Plans from $3.74/GB. Routes through GTA's 4G LTE network. Best Budget. 30-day refund.
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 at $14.19/day. Best for streaming, video calls, and remote work.
Budget travelers: Holafly starting at $7.99.
Privacy-conscious: Saily with built-in VPN from Nord Security.
| Provider | Coverage | Speed | App | Pricing | Support | Total |
|---|---|---|---|---|---|---|
| ★ 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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