eSIM plans · OceaniaGuam eSIM: How Much Data You Need (2026)
HelloRoam bills in 31 currencies. Airalo, Holafly, Nomad and Saily bill US dollars. A 7-day Guam trip at 1.5 GB a day needs 11 GB, and the 20 GB tier covers it for $74.77, on a published list naming GTA Wireless. Airalo lists 200+ destinations against HelloRoam's 186.
A 7-day trip to Guam requires 11GB for a moderate data user. Maps, messaging and photo uploads run 1.5GB a day across the full trip. The 20GB tier at $74.77 fits a 7-day moderate trip with 9GB left over for video calls or hotspot sharing. Unlimited data runs $14.19/day on the local network your handset finds, which ends data tracking for heavy users.
HelloRoam publishes one operator for Guam, GTA Wireless.
Checking email and loading maps holds a trip on the 0.5 GB light band, 4GB over 7 days. If you scroll social feeds and use navigation, then 1.5GB/day (11GB total) fits better. If you stream video or join calls, then 3GB/day (21GB total) is the target. Guam's 1 carrier on 4G LTE carry 6 plan options for all three profiles.
Matching plans to usage profiles in Guam: Budget travelers pick the 5GB plan at $19.95 and keep $3.99/GB as their cost floor. Moderate travelers pay $19.95 for 5GB and get the best balance between data size and per-GB cost ($3.99/GB). Video callers and streamers skip fixed plans and pay $14.19/day for uncapped 4G LTE data on the local network your handset finds.
The tier that fits a Guam trip
Three tiers, and all 5 providers scored inside each one. Most travelers land on Moderate. Not sure? Take the quiz.
Light use, 1 to 3 GB
Maps and transit apps · Translation and messaging · Email and boarding passes
Sticking to trains, translation and messaging in Guam? HelloRoam takes Light at 86 out of 100. Nomad is next at 83. On rate alone Nomad wins: $3.00 a gigabyte, where HelloRoam asks $3.50. Optimising for cost alone? Nomad. Holafly sells nothing this small, so it scores 31. A 3 GB plan for Guam runs $12.71.
| Provider | Plan at this size | Per GB at 0.5 GB/day | Tier match |
|---|---|---|---|
| HelloRoamMost Support LanguagesTier pick | Fixed 1 GB and 3 GB tiersPublished rate $3.50/GB | $3.50 | 86/100 |
| NomadLowest Fixed Rate | Fixed 1 GB and 3 GB tiersPublished rate $3.00/GB | $3.00 | 83/100 |
| SailyOnly Built-In VPN | Fixed 1 GB and 3 GB tiersPublished rate $3.99/GB | $3.99 | 77/100 |
| AiraloOnly Regional Bundles | Fixed 1 GB and 3 GB tiersPublished rate $4.50/GB | $4.50 | 74/100 |
| HolaflyBest Unlimited Value | No plan at this size, unlimited daily onlyPublished rate $2.99/day | No rate to quote | 31/100 |
Moderate use, 3 to 7 GB
Photo sharing and social apps · Browsing and short video · Music and a call home
Week in Guam with photos going up most evenings? Holafly wins this tier 96 to 86, with HelloRoam second. Nobody beats its $1.99 a gigabyte at 1.5 GB a day. HelloRoam finishes on 86 and loses the tier. A 5 GB plan for Guam runs $19.95.
| Provider | Plan at this size | Per GB at 1.5 GB/day | Tier match |
|---|---|---|---|
| HolaflyBest Unlimited ValueTier pick | Unlimited daily, no 5 GB tierPublished rate $2.99/day | $1.99 | 96/100 |
| HelloRoamMost Support Languages | Fixed 3 GB and 5 GB tiersPublished rate $3.50/GB | $3.50 | 86/100 |
| NomadLowest Fixed Rate | Fixed 3 GB and 5 GB tiersPublished rate $3.00/GB | $3.00 | 83/100 |
| SailyOnly Built-In VPN | Fixed 3 GB and 5 GB tiersPublished rate $3.99/GB | $3.99 | 77/100 |
| AiraloOnly Regional Bundles | Fixed 3 GB and 5 GB tiersPublished rate $4.50/GB | $4.50 | 74/100 |
Heavy use, 10 GB and up
Streaming and video calls · A full remote work day · Laptop hotspot
Working from Guam or streaming most nights? Holafly wins this tier 96 to 66, with HelloRoam second. The cheapest gigabyte at this usage is also Holafly's, $1.00. HelloRoam lands at 66, second best and beaten. Saily and Nomad cap you at a fixed bundle, which for a heavy week means paying for the ceiling. A 10 GB plan for Guam runs $39.87, and unlimited runs $14.19 a day.
| Provider | Plan at this size | Per GB at 3 GB/day | Tier match |
|---|---|---|---|
| HolaflyBest Unlimited ValueTier pick | Unlimited dailyPublished rate $2.99/day | $1.00 | 96/100 |
| HelloRoamMost Support Languages | Fixed up to 20 GB, unlimited in some destinationsPublished rate $3.50/GB | $3.50 | 66/100 |
| AiraloOnly Regional Bundles | Fixed up to 20 GB, unlimited in some destinationsPublished rate $4.50/GB | $4.50 | 54/100 |
| NomadLowest Fixed Rate | Fixed tiers only, no unlimited planPublished rate $3.00/GB | $3.00 | 43/100 |
| SailyOnly Built-In VPN | Fixed tiers only, no unlimited planPublished rate $3.99/GB | $3.99 | 37/100 |
The rate column is each provider's published entry price, worked out per gigabyte at the tier's daily usage. That is the only way a daily plan and a per-GB plan land on one scale. Published entry rates: Airalo $4.50/GB, Saily $3.99/GB, Holafly $2.99/day, Nomad $3.00/GB, HelloRoam $3.50/GB. Those are catalogue floors, not prices for Guam. Only one of the five publishes prices we can read per destination, and that is HelloRoam, so every Guam plan price above is HelloRoam's. The rest get their published floor and no destination quote.
How trip length changes your Guam plan
Short trips and extended stays need different data strategies. Find your trip length below.
Short trip (1-3 days)
A 1-3 day trip needs 5GB at moderate use. The 5GB plan at $19.95 covers maps and messaging on the local network your handset finds.
Standard trip (5-10 days)
A 5-10 day trip requires 11GB at 1.5GB/day. The 20GB plan at $74.77 gives moderate users enough data on the local network your handset finds.
Extended stay (14-30 days)
For stays of 14+ days, unlimited data at $14.19/day on the local network your handset finds beats buying multiple fixed plans.
Your Guam shortlist, all 5 providers
Two questions decide most e-sim purchases: how big the bundle is and how long it lasts. Here is both, next to tethering, phone numbers and each published rate.
| Provider | Our rubric score | Min to max GB | Min to max validity | Hotspot | Local number | Entry rate | Action |
|---|---|---|---|---|---|---|---|
 HelloRoamMost Support LanguagesTop of our rubric | 8.7/10 | 1 GB to 20 GB, plus unlimited | Unlimited runs 1 to 30 days, fixed window not published | Not published | No, data only | $3.50/GB | Get Plan |
 HolaflyBest Unlimited Value | 8.6/10 | Unlimited daily, no GB tiers | 1 to 90 days | Capped at 1 GB per day | No, data only | $2.99/day | Get Plan |
 AiraloOnly Regional Bundles | 6.9/10 | 1 GB to 20 GB | 7 to 30 days | Included, full speed | No, data only | $4.50/GB | Get Plan |
 NomadLowest Fixed Rate | 6.6/10 | From 1 GB, top size not published | 30 days on the plans we list | Not published | No, data only | $3.00/GB | Get Plan |
 SailyOnly Built-In VPN | 6.5/10 | From 1 GB, top size not published | Not published | Included on all plans | No, data only | $3.99/GB | Get Plan |
Affiliate disclosure: We earn a commission when you buy through our links at no extra cost to you.
Who you're connecting to
In Guam, the underlying carrier matters more than the brand on your plan.
Carrier routing determines the right plan for each traveler type in Guam. Urban 4G LTE coverage in Guam runs mostly on GTA Wireless, which handles navigation, social apps and video calls without much fuss. No provider states its Guam routing, so compare what each one does publish. On reach Airalo wins outright, at 200 published destinations against everyone else. The trade is a $4.50/GB entry rate and a 14-day refund window, the shortest of the five. Holafly sells unlimited daily data and no per-GB tier at all. Its published rate starts at $2.99/day, which beats every fixed plan here past 1.5 GB a day and loses below it. Saily is the privacy pick: VPN on every plan from $3.99/GB. Saily support is email in 1 language, which is the gap if the eSIM fails on arrival. Sticking to maps and messaging? Nomad publishes the cheapest gigabyte here at $3.00/GB. Nomad refunds inside 30 days and sells one plan shape, with no unlimited tier. HelloRoam publishes the widest support access of the five, 63 languages around the clock, plus a 180-day refund window. It does not win on price at $3.50/GB, and Airalo reaches 14 more destinations. Since all 1 carrier in Guam run 4G LTE, your usage tier drives the plan choice more than the network name.
HelloRoam publishes its local operator list for Guam, and the next section prints that list in full. The other four providers publish no equivalent list, so the cards below carry published facts about each provider instead of a carrier we would be guessing at.
Airalo
4G LTEReaches the most destinations of the five, at 200.
Saily
4G LTEAdds VPN routing on every plan.
Holafly
4G LTEUnlimited daily plans with fair-use speeds after the threshold.
Nomad
4G LTELowest fixed per-GB rate of the five, at $3.00.
HelloRoam
4G LTERuns on 204+ carrier partners with a 180-day refund window.
Local networks a Guam eSIM attaches to
Before you buy, check the network. HelloRoam publishes one operator for Guam. That operator is GTA Wireless. 117 of the 185 destinations HelloRoam publishes work this way.
One operator means no fallback. A weak GTA Wireless signal in a valley or a basement leaves you offline until you move. Save offline maps for Guam before you fly.
HelloRoam lists no 5G operator in Guam, so expect 4G on the ground. This does not change how many gigabytes you need. Trip length still sets the tier.
| Local operator | Network labels |
|---|---|
| GTA Wireless | 4G |
Where this table came from: HelloRoam's own destination catalogue, read on 17 August 2026. That catalogue publishes an operator list for every destination it sells, and we copied it. Nobody ran a speed test to build it, and no throughput number sits behind any row.
What uses your data in Guam
Activity-level data breakdown for a Guam trip.
Streaming
The heavy benchmark is 3 GB a day, and video is what puts a traveler there. A 7-day Guam trip on that band needs 21 GB. The 20GB plan at $74.77 covers it. Dropping the picture quality one step moves the same day back toward the 11 GB moderate total.
Navigation
Maps and ride-hailing sit in the light band, 0.5 GB a day on the published benchmark. 7 days of Guam navigation totals 4 GB, and the 5GB plan at $19.95 covers it. Offline maps cut the figure again, because a downloaded map draws nothing while you walk.
Social media
Feed scrolling and photo uploads land on the moderate band of 1.5 GB a day. 7 days in Guam works out at 11 GB, and the 20GB plan at $74.77 is the fit. Turning off autoplay video pulls the same day toward the 4 GB light total.
Work tools
The heavy band, 3 GB a day, is the one a remote worker buys against in Guam. Over 7 days that is 21 GB rather than the 11 GB a moderate traveler needs. The 20GB plan at $74.77 covers the gap.
Your Guam pricing notes
If you compare per-GB rates across Guam plans, bigger tiers win on unit cost: 1GB at $7.99 ($7.99/GB), 3GB at $12.71 ($4.24/GB), 5GB at $19.95 ($3.99/GB), 10GB at $39.87 ($3.99/GB), 20GB at $74.77 ($3.74/GB). At $3.99/GB, the 5GB plan for $19.95 gives social media and navigation users 4 days of data. Short-trip travelers spending 3-4 days in Guam pick 1GB at $7.99 and pay only for the data they need. Unlimited daily data costs $14.19/day. The break-even with the 20GB fixed plan hits at 5 days. A 30-day unlimited plan drops to $11.64/day (18% off). Holafly publishes unlimited daily from $2.99/day and suits heavy users. Nomad publishes the lowest fixed rate at $3.00/GB and suits light ones. Looking for the cheapest eSIM in Guam? The lowest destination price we hold is 1GB at $7.99 from the catalogue. Nomad publishes the lowest fixed entry rate of the five at $3.00/GB, though not a Guam figure we can stand behind.
See how Guam compares to similar destinations in Oceania. For device-specific setup, read our guides for iPhone, Samsung, and Pixel.
How to activate your Guam eSIM
Start by selecting a Guam plan sized to your usage tier (light, moderate, or heavy). Then scan the provider's QR code in your phone's eSIM settings over a stable WiFi connection.
If you want to receive calls on your home number while abroad, keep both lines active. Set the eSIM as "Travel Data" for internet and your home SIM for voice.
If your eSIM is pre-installed, GTA Wireless connects the handset to 4G LTE in Guam the moment your phone leaves airplane mode. Setup runs under 30 seconds.
Common Guam eSIM questions
Direct answers grounded in real plan data and carrier coverage.
What plan do I need?
HelloRoam publishes one operator for Guam, GTA Wireless. Destination plans run from $7.99 (1GB) to $74.77 (20GB) on the catalogue, the only per-destination price feed we hold. For a 7-day trip, moderate users need about 3GB. The 3GB plan at $12.71 covers that.
How much data do I need?
The average smartphone user consumes about 15GB per month at home. A 7-day trip to Guam uses about 3GB, roughly 20% of a month's data. That is the 1.5 GB moderate band, which covers maps, social media and messaging. WiFi in Guam is available at hotels and some restaurants, offsetting about 10% of usage.
Which provider is cheapest?
Nomad publishes the lowest fixed eSIM rate of the 5 providers we score, at $3.00/GB. The cheapest Guam plan in our price feed is 1GB at $7.99 on the local network your handset finds, a catalogue price. Published entry rates: HelloRoam from $3.50/GB, Holafly from $2.99/day, Airalo from $4.50/GB, Nomad from $3.00/GB, Saily from $3.99/GB. Those are catalogue floors, not Guam quotes. For a 7-day trip needing 11GB, compare the total cost, not the headline rate.
Is an eSIM worth it?
An eSIM is worth it for Guam. Carrier roaming costs about $110.00 for 11GB over 7 days. The 20GB eSIM plan costs $74.77 on the local network your handset finds, saving you $35.23. No airport SIM queue at 15-30 minutes, no contract, and instant activation.
eSIM vs SIM card?
Use both in Guam: keep your home SIM for calls and add an eSIM for data. Guam eSIM plans start at $7.99 for 1GB on the local network your handset finds, a catalogue price. That avoids the 15-30 minutes airport SIM queue and the $15-25 counter price.
How to set up?
Set up your Guam eSIM before boarding. Buy and install the plan while on home WiFi. The eSIM activates on GTA Wireless when your phone detects the local network. Guam plans start at $7.99 for 1GB on the catalogue. Keep your home SIM active for calls and use the eSIM for data.
Plan match by traveler profile
Each profile maps to a specific plan size and provider for Guam.
Backpacker
A backpacker in Guam spends 7 GB on maps and messaging over 14 days. The 10 GB plan at $39.87 matches that on the local network your handset finds. HelloRoam is the shape fit of the five we score, on 186 published destinations.
Budget travelers need 4GB over 7 days. The 5GB plan at $19.95 covers maps and messaging on the local network your handset finds.
Business traveler
A business traveler in Guam needs 15 GB for video calls and uploads over 5 days. The 20 GB plan covers that at $74.77, or $3.74 per GB, on the local network your handset finds. HelloRoam fits the shape and refunds an unactivated eSIM for 180 days.
Video calls and file uploads push daily use to 3GB. Over 7 days that is 21GB. Unlimited at $14.19/day on the local network your handset finds covers it.
Family group
A family traveler in Guam spends 14 GB on social media and navigation over 7 days. The 20 GB plan at $74.77 matches that on the local network your handset finds. The shape fit here is HelloRoam, which answers support in 63 languages and refunds for 180 days.
Three travelers sharing Guam data need 32GB for 7 days. Each grabs the 20GB at $74.77 on the local network your handset finds.
Digital nomad
A digital nomad uses 75 GB across 30 days in Guam on remote work and streaming. The 20 GB plan at $74.77 matches that on the local network your handset finds, at $3.74 per GB. Of the five we score, Holafly publishes the plan shape that fits, at an entry rate of $2.99/day.
Remote workers run the 3 GB heavy band for uploads and calls. The 20GB plan at $74.77 handles 21GB over 7 days on the local network your handset finds.
Your questions, answered
How many gigabytes per day should I budget in Guam?
Budget 0.5 GB a day for maps and messaging, 1.5 GB a day for social media and browsing, and 3 GB a day if you stream. Over a 7-day Guam trip those rates come to 4 GB, 11 GB and 21 GB. Most visitors land on the middle rate, so the 20 GB plan at $74.77 covers the moderate figure on the local network your handset finds. Past 3 GB a day the fixed tiers run out here, and unlimited days at $14.19 take over. Pick the daily rate that matches your habits at home, because a trip rarely changes them.
Which plan shape fits my Guam trip, fixed tiers or unlimited days?
If you stream video or run work calls most days in Guam, take the unlimited shape at $14.19 a day. If you keep to maps, messaging and evening browsing, take a fixed tier: a 7-day trip at 1.5 GB a day needs 11 GB, which the 20 GB plan covers at $74.77. Shape availability is not the same everywhere. Holafly publishes unlimited daily plans across the catalogue. HelloRoam and Airalo publish them for selected destinations only. There is no unlimited option from Nomad and Saily, fixed tiers only. Holafly publishes nothing by the gigabyte, so light users have no small plan to buy.
Which eSIM plan fits a light or heavy data user in Guam?
Calculate your Guam data need by usage rate. At 0.5 GB a day for 7 days: 4 GB needed. The 5 GB plan at $19.95 covers it at $3.99/GB. At 3 GB a day for 7 days: 21 GB needed, and the 20 GB plan at $74.77 ($3.74/GB) is the largest tier sold here, so a heavy pace needs a second purchase or an unlimited plan. That is $0.25/GB less than the entry tier charges.
What should I check on my phone before I buy a Guam plan?
Three checks, in order. One: dial *#06# and look for an EID number, because no EID means no eSIM. Two: confirm the model, since iPhone XS and later, Galaxy S20 and later, and Pixel 3 and later are covered. Three: confirm carrier-unlock status, which a locked handset fails regardless of model. Pass all three and your phone joins Guam's 4G LTE network the moment you turn the profile on. Whether a page calls it eSIM, e-SIM or e SIM, it is the same embedded profile.
What starts the clock on a Guam plan, the purchase or the landing?
Landing starts the clock, so time the purchase to the flight. Buy 1 to 3 days before you fly and install the QR code over home WiFi, which does not trigger the countdown. The first network connection in Guam does. The 1 GB plan at $7.99 suits a short stay. The 20 GB plan at $74.77 suits a longer one. Installing early is the part that matters: airport WiFi is the worst place to discover a QR code will not scan.
Is Guam well-covered by travel eSIM networks in Oceania?
For a Oceania trip centred on Guam, the picture is simple. 1 operator (GTA Wireless) deliver 4G LTE service, and travel eSIMs ride the same infrastructure as local SIMs. Coverage is strongest in urban centres and transport hubs. The 5 GB plan at $19.95 ($3.99/GB) fits a standard Oceania visit. If the trip grows another leg, check reach before loyalty. Published destination lists differ: Airalo, Nomad and Saily at 200, HelloRoam at 186 and Holafly at 160.
Which activities use the most mobile data in Guam?
The photo sharer and the navigator both live inside the 1.5 GB moderate band in Guam. The streamer and the remote worker both live on the 3 GB heavy band. That is the whole split, and it is the split the tier ladder is built around. The 5 GB plan at $19.95 covers a moderate traveller on the local network your handset finds, at $3.99/GB.
How do I match a Guam plan tier to the number of nights I am staying?
Start from the booking, not the price list. Nights first, then the tier: 1 to 2 nights takes the 3 GB plan at $12.71 ($4.24/GB); 3 nights takes the 5 GB plan at $19.95 ($3.99/GB); 4 to 6 nights takes the 10 GB plan at $39.87 ($3.99/GB); 7 to 13 nights takes the 20 GB plan at $74.77 ($3.74/GB). Heavy video use adds about 20% to each of those ranges. The 20 GB plan holds the lowest per-GB rate here at $3.74/GB. A tier that covers your nights with a little spare is the cheaper outcome, because topping up mid-trip in Guam costs more than the step up did.
How many days must I commit to for unlimited pricing in Guam?
Three numbers decide it. The floor is 1 day at $13.62. The base rate is $14.19 a day. The longest block, at 30 days, cuts that to $11.64 a day, or 18% off. Full 4G LTE speed runs to 2GB a day before fair-use terms apply. Book the block that matches your nights in Guam, since a shorter block topped up later costs the base rate again.
Which provider backs up a mis-sized Guam plan?
Travelers who buy months ahead lean on the refund window; travelers who buy the night before lean on support. For the first group: HelloRoam and Holafly publish 180 days, Nomad and Saily 30 days and Airalo 14 days, all on an unactivated eSIM. For the second: HelloRoam publishes 63 languages over live chat, WhatsApp and email, around the clock, and Airalo sits at the other end of the refund ladder with 14 days. Pick the backstop that matches how you buy for Guam. Sizing up first is still cheaper than any refund: the 20 GB plan holds the lowest rate here at $3.74/GB.
Nearby destinations
Get matched to your exact Guam plan
Answer four quick questions and we'll pick the right tier, provider and price for your trip.
Take the 60-second quiz