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Guam eSIM Cost per GB at Each Data Size (Oct 2026)
HelloRoam, an eSIM platform, is the top pick for Guam at $3.74 per GB on a 20 GB plan; this site holds no Guam price row for Airalo or Holafly. HelloRoam takes 31+ checkout currencies through Stripe, with Apple Pay and Google Pay. Airalo covers 200+ destinations, against the 185 that HelloRoam sells.
Plan snapshot
- Lowest cost per GB: 20 GB, 30 days, $74.77 ($3.74/GB).
- Plan totals: $7.99 for 1 GB to $74.77 for 20 GB, read 29 Oct 2026.
- Rival prices: not read for Guam. The 30 Oct 2026 price check covers 42 destinations.
- Unlimited: $14.19 for 1 day to $289.48 for 30 days, with 2 GB a day at full speed.
- All 5 Guam plans allow hotspot and top-ups, per the plan list of 7 Sep 2026.
- A HelloRoam eSIM in Guam attaches to one host operator, GTA Wireless.
GTA Wireless 4G · hotspot and top-ups (plan list, 7 Sep 2026)
What does each Guam data size cost?
HelloRoam 20 GB for 30 days at $3.74 per GB, read 29 Oct 2026. This table holds the HelloRoam rows only, because the price check did not read this destination.
| Provider | 1 GB | 3 GB | 5 GB | 10 GB | 20 GB |
|---|---|---|---|---|---|
| HelloRoam 1 GB: $7.99, 7 days; 3 GB: $12.71, 30 days; 5 GB: $19.95, 30 days; 10 GB: $39.87, 30 days; 20 GB: $74.77, 30 days | $7.997 days | $12.7130 days | $19.9530 days | $39.8730 days | $74.7730 days |
Which Guam plans have the lowest cost per GB?
Top 5 plans by cost per GB
| # | $/GB ↑ | Plan | Total | Network | Days | Action |
|---|---|---|---|---|---|---|
| 1 | $3.74Lowest $/GB | 20GB | $74.77 | GTA Wireless | 30d | Get this plan → |
| 2 | $3.99 | 10GB | $39.87 | GTA Wireless | 30d | Get this plan → |
| 3 | $3.99 | 5GB | $19.95 | GTA Wireless | 30d | Get this plan → |
| 4 | $4.24 | 3GB | $12.71 | GTA Wireless | 30d | Get this plan → |
| 5 | $7.99 | 1GB | $7.99 | GTA Wireless | 7d | Get this plan → |
How do the five providers compare in Guam?
The first row has the top rubric score, 9.0 out of 10 on the method of 30 Oct 2026. 1 of the five has a Guam rate here, and the first row lists the lowest at $3.74/GB.
| Provider | Score | Lowest $/GB here | Cheaper plans here | Destinations | Min-max GB | Min-max validity | Hotspot | Devices |
|---|---|---|---|---|---|---|---|---|
1. HelloRoam Cheapest in the most price cells | 9.0/10 | $3.74 20 GB / 30 days at $74.77 | No rival price read here | 185 | 1-20 GB | 7-30 days | Yes, all plans | iPhone XR+, Android 2020+ |
2. Holafly Joint longest refund window | 6.3/10 | Not published | Not read | 200+ | Not published | Not published | Limited, some countries | iPhone XR+, Android 2020+ |
3. Nomad Second on price cells won | 5.9/10 | Not published | Not read | 200 | Not published | Not published | Not on all plans | iPhone XR+, Android 2020+ |
4. Airalo Joint first on the coverage score | 5.5/10 | Not published | Not read | 200+ | Not published | Not published | Yes, metered plans only | iPhone XR+, Android 2020+ |
5. Saily Joint second-widest plan mix | 4.0/10 | Not published | Not read | Not stated | Not published | Not published | Yes, most plans | iPhone XR+, Android 2020+ |
First-row rates come from that provider's catalogue, read 29 Oct 2026. No rival price for Guam was read in the 30 Oct 2026 price check.
- HelloRoam · Cheapest in the most price cells · Cheapest of all five in 207 of 367 price cells read 30 Oct 2026.
- Holafly · Joint longest refund window · 180 days on an unactivated eSIM, level with the top pick.
- Nomad · Second on price cells won · Cheapest of all five in 95 of 367 price cells read 30 Oct 2026.
- Airalo · Joint first on the coverage score · 200+ destinations, level with Holafly.
- Saily · Joint second-widest plan mix · Fixed plans in 42 and unlimited plans in 40 of the 42 destinations checked, level with Airalo.
The order is the rubric on the research method page, not a price sort. Not published means no price for Guam was read for that provider. No coverage means the provider does not sell that destination. No cell is filled with an estimate.
Every plan in this index is data only, with no local phone number. All of them need an eSIM-capable handset, which means iPhone XR or newer and most Android phones from 2020.
Per-GB rates ranked, lowest first
Provider-by-Provider $/GB Rates
Only one provider (HelloRoam) covers Guam. The lowest plan is 1GB at $7.99/GB.
Price Spread Analysis
Guam has 5 eSIM plans from 1 provider, ranging from $3.74/GB to $7.99/GB. Median per-GB across all 5 plans is $3.99/GB. The per-GB spread is $4.25, meaning the priciest plan costs 114% more per gigabyte than the cheapest.
Which Guam plan costs the least per day?
Value Per Day Breakdown
| Plan | Total | Days | $/Day |
|---|---|---|---|
| 1GB | $7.99 | 7 | $1.14 |
Use-Case Value Picks
Plans by trip length for Guam: Weekend (2-3 days): 3 GB at $12.71 for 30 days. Week trip (7 days): 5 GB at $19.95 for 30 days. Two-week vacation: 10 GB at $39.87 for 30 days. Digital nomad (30 days): 20 GB at $74.77 for 30 days.
Which Guam plan of 3 GB or more has the lowest cost per GB?
HelloRoam's 20GB plan at $74.77 delivers the strongest price-to-data ratio for Guam. At $3.74/GB for 20GB over 30 days, the daily cost is $2.49. HelloRoam's plan includes tethering included and top-up available at no extra cost. This plan connects through GTA Wireless in Guam. 1 provider competes for Guam across 5 plans. The per-GB spread from cheapest to most expensive is $3.74 to $7.99.
Value Rankings
| # | Plan | Score | $/GB | $/Day |
|---|---|---|---|---|
| 1 | 20GB | 95 | $3.74 | $2.49 |
| 2 | 10GB | 91 | $3.99 | $1.33 |
| 3 | 5GB | 91 | $3.99 | $0.66 |
| 4 | 3GB | 83 | $4.24 | $0.42 |
| 5 | 1GB | 35 | $7.99 | $1.14 |
How does Guam pricing change by data size?
Guam eSIM pricing varies significantly by data tier. The right plan depends on trip length and daily usage intensity. 1GB: HelloRoam leads at $7.99 ($7.99/GB, 1GB, 7 days). This tier suits maps, messaging, and basic browsing for 2-3 days. Top-up is available if you underestimate your needs. 3GB: HelloRoam leads at $12.71 ($4.24/GB, 3GB, 30 days). This tier suits maps, social media, and messaging for a 5-7 day trip. Top-up is available if you underestimate your needs. 5GB: HelloRoam leads at $19.95 ($3.99/GB, 5GB, 30 days). This tier suits active social media use and photo uploads for a week. 10GB: HelloRoam leads at $39.87 ($3.99/GB, 10GB, 30 days). This tier suits streaming, video calls, and heavy browsing for 7-14 days. 20GB: HelloRoam leads at $74.77 ($3.74/GB, 20GB, 30 days). This tier suits digital nomad work, daily streaming, and tethering for 2-4 weeks. Per-GB rates drop with plan size: $7.99/GB at 1GB vs $3.99/GB at 10GB. Buying larger saves 50% per gigabyte.
How do I pay the least for Guam?
HelloRoam's 20GB plan at $74.77, the lowest cost per GB for Guam, saves $9.23 against a week on AT&T's International Day Pass at $12 a day. No airport counter price is tracked for Guam. HelloRoam starts at $7.99 for 1GB. Either way there is no kiosk queue, no passport scan and no wait to activate. Read 29 Oct 2026.
How to Get the Lowest Price
Buy the smallest plan that covers your trip length and data needs. HelloRoam's 20GB plan at $74.77 is the lowest-cost entry point for Guam. 5 of 5 plans support top-up if you run out.
Hidden Costs to Watch
Watch for: (1) Tethering restrictions — 5 of 5 plans include hotspot. (2) Tax and checkout fees — some providers add VAT at checkout. (3) Data cap overages — plans stop or slow down once the cap is spent, and no provider tracked here publishes the speed it applies. (4) Activation timing — some plans start counting validity from purchase, not first use. Always check the provider's terms before buying.
Which networks cover Guam?
Carrier Infrastructure
Guam's primary carriers are GTA and DOCOMO Pacific.
How much is an unlimited eSIM for Guam?
| Duration | Per day | Total | Discount |
|---|---|---|---|
1 day | $14.19/day | $14.19 | none |
3 days | $13.48/day | $40.44 | 5% off |
7 days | $12.49/day | $87.41 | 12% off |
15 days | $11.35/day | $170.28 | 20% off |
30 days | $9.65/day | $289.48 | 32% off |
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