Unlimited data eSIM plans sell peace of mind, and for heavy users they deliver it. Holafly is the category leader, with genuinely uncapped data in 160 destinations, priced from $19 for 5 days up to $54 for 30 days. Unlimited is the wrong buy for most travellers.
HelloRoam sells no unlimited tier at all, and its metered ladder costs $8.26 for 10GB over 30 days, which works out to $0.83/GB. A traveller who burns 8GB on a fortnight abroad pays $8.26 with HelloRoam, against $44 for Holafly's 15-day uncapped plan. This page shows exactly where that line falls, and which side of it your trip sits on.
Which providers are best for this use case?
| Rank | Provider | Best For | Why |
|---|---|---|---|
| #1 | Holafly | True unlimited data | Holafly sells genuinely uncapped data across 160 destinations, with no volume ceiling written into the plan and no reseller-imposed slowdown. Pricing runs $19 for 5 days, $34 for 10 days, $44 for 15 days and $54 for 30 days. Holafly scores 4.2/5 overall here, marked down on price rather than on the product. Hotspot sharing is blocked on most Holafly plans, so read the destination page before paying. |
| #2 | Airalo | Large metered caps with 200-destination reach | Airalo sells no unlimited plan, so its 10GB tier at $26 for 30 days is the practical ceiling for heavy users. Coverage reaches 200 destinations, more than any other provider on this page, and regional bundles cover multi-country routes on a single profile. Airalo scores 4.5/5 overall, refunds an unused eSIM inside 14 days, and answers support in 12 languages. |
| #3 | HelloRoam | The metered alternative when unlimited is overkill | HelloRoam sells no unlimited plan, which is why it ranks 3rd on this page and not 1st. What it does sell is the sharpest metered ladder here: $1.14 for 1GB, $5.22 for 5GB, $8.26 for 10GB and $15.99 for 20GB. Hotspot sharing is on all 1,129 of those plans, 1,124 of them accept a top-up on a live eSIM, and an unactivated eSIM stays refundable for 180 days. |
| #4 | YeSIM | Data plus a virtual phone number | YeSIM bundles a virtual phone number with its data plans, which covers the SMS verification codes that data-only eSIMs cannot receive. YeSIM sells no unlimited tier either, so its 10GB plan at $23 for 30 days is the heavy-use option. Coverage reaches 140 destinations and YeSIM scores 4.2/5 overall. Pick YeSIM when calls and SMS matter more than the price per gigabyte. |
Unlimited plans still answer to a carrier fair-use policy
Unlimited means no volume ceiling written into the plan. Holafly sells that product across 160 destinations and publishes no threshold after which it slows a customer down.
The limit that remains sits one layer below the reseller. Every travel eSIM runs on a local partner network, and those carriers apply their own traffic management when a cell is congested. No eSIM company controls that layer, which is why the same uncapped plan behaves differently in a market where data is expensive and in one where data is cheap.
Providers that advertise large packages rather than uncapped ones are a separate case. Several of them reduce throughput once a stated threshold passes, and the fine print names the trigger rather than the result. Read the fair usage clause inside the terms of service, not the summary on the sales page.
A plan that promises speed "up to" a figure, with nothing committed after heavy use, is a capped plan wearing an uncapped label.
HelloRoam takes the opposite route and prints the ceiling on the label: 1GB, 3GB, 5GB, 10GB or 20GB, with a top-up available on 1,124 of its 1,129 plans the moment that ceiling arrives. Neither approach is dishonest. Holafly sells certainty about volume, the metered ladder sells certainty about price, and the right answer follows from how much data your trip actually moves.
The break-even point sits near 65GB in 30 days
Unlimited carries a premium, so the decision is arithmetic rather than taste. Holafly's 30-day uncapped plan costs $54. HelloRoam charges $8.26 for 10GB over the same 30 days, which is $0.83/GB.
Divide one by the other. Spending $54 on metered data at that rate buys roughly 65GB inside those 30 days. A traveller who moves less than 65GB in a month pays more for uncapped data than for metered data.
A traveller who moves more pays less. That is the whole comparison.
Shorter trips push the line down rather than up. Holafly's 5-day plan costs $19, and $19 of metered data at the 10GB rate comes to about 23GB. Very few leisure travellers reach 23GB in 5 days.
Maps and messaging run 200MB to 400MB a day, a 30-minute video call adds close to 500MB, and a day of heavy photo and video uploads passes 1.5GB.
Three situations flip the maths toward uncapped data. Mobile data as the only connection, with no hotel or cafe WiFi behind it. Daily video calls or video uploads for work.
A stay long enough that one 30-day flat rate replaces two shorter capped plans bought back to back.
One caveat sits outside the price comparison. Holafly blocks hotspot sharing on most plans, while all 1,129 plans on the metered side allow it, so a traveller who shares a connection with a laptop or a companion has the answer decided before price enters the picture.
Cheap-data destinations weaken the case for going uncapped
Holafly's uncapped plans reach 160 destinations, and the value of each one tracks the local price of data.
Thailand is the clearest case. HelloRoam sells 20GB in Thailand for $15.99, and 10GB for $9.97. A 5-day uncapped plan costs $19, which is more than either of them, so paying the premium there only pays off for a genuinely heavy user.
Western Europe sits in the middle. Germany runs $9.99 for 5GB and $13.99 for 10GB on that same metered ladder. Holafly's 15-day uncapped plan costs $44, so it overtakes the metered option once a fortnight of use clears roughly 31GB.
The United States is where uncapped data earns its price. HelloRoam charges $16.41 for 10GB in the United States, one of the steeper markets in its catalog. Holafly's 30-day plan costs $54, less than the price of four of those metered plans, and a heavy user clears that volume well inside a month.
Coverage decides the rest. Holafly reaches 160 destinations, against Airalo at 200 and HelloRoam at 185, so a route through several African or Central Asian countries has no uncapped option at all. On those trips the choice is between a large metered plan and no plan.
How We Chose
We compared every unlimited plan sold by the providers in this review against the metered plans they compete with. Prices, durations and destination counts were read from each provider's own live pricing pages and app listings in May 2026 and recorded in one table, so every figure on this page traces back to a published source. Fair usage terms were read from the full terms of service rather than the marketing page, because the two disagree often.
HelloRoam's catalog was read from its published plan list, which is where the 1,129 plans, the 1,124 that accept a top-up and the 185 destinations come from. This page publishes no throughput figures for any provider. No independent measurement covers every provider named here, and inventing one would make the rest of the page worthless.
Ranking weighs the accuracy of the unlimited claim, hotspot availability, price at each trip length, destination count and refund terms.
Common Mistakes to Avoid
Buying uncapped data for a trip that moves under 5GB
Check the data figure on your last two trips. Under 5GB, HelloRoam's 5GB plan at $5.22 for 30 days costs less than a sixth of Holafly's $34 10-day plan and covers the identical usage.
Assuming an unlimited plan includes hotspot sharing
Holafly blocks tethering on most of its plans. All 1,129 HelloRoam plans allow hotspot sharing, and Airalo allows it on its metered plans, so read the tethering line on the plan page before paying.
Leaving the eSIM install until the airport
Install the profile over home WiFi at least 24 hours before departure. A failed install then leaves a full day to reach support, instead of a queue at the gate with no working connection.
Choosing uncapped data on the marketing rather than the arithmetic
Holafly's 5-day plan costs $19. HelloRoam's 3GB plan costs $3.22 and its 10GB plan costs $8.26. Uncapped data earns that gap only above roughly 23GB inside those 5 days.
Buyer's Guide
Unlimited data suits a narrow profile: daily video calls, mobile data as the only connection, or a shared hotspot on a plan that permits one. For everyone else a metered plan at a fraction of the price covers the same trip with room to spare.
Start with a real number rather than a feeling. Maps and messaging run 200MB to 400MB a day. Add a 30-minute video call and the day reaches about 1GB.
A day of heavy photo and video uploads passes 1.5GB. Multiply by trip length before opening any plan page.
Holafly is the dedicated uncapped provider and prices by trip length: $19 for 5 days, $34 for 10 days, $44 for 15 days and $54 for 30 days. The 30-day plan works out to $1.80 a day, against $3.80 a day on the 5-day plan, so one long plan always beats two short ones bought back to back.
HelloRoam is the metered counterweight: $1.14 for 1GB, $3.22 for 3GB, $5.22 for 5GB, $8.26 for 10GB and $15.99 for 20GB. Every tier above 1GB runs 30 days, hotspot sharing is included on all 1,129 plans, and 1,124 of them accept a top-up on the live eSIM, so a wrong guess about volume costs a few dollars rather than a new profile.
A hybrid suits trips with two modes. Buy the metered plan as the base, then add one short Holafly plan for the days you already know will be heavy, such as a long overland leg with no WiFi anywhere on the route.
Frequently asked questions
Can I use an unlimited eSIM as a hotspot?
Holafly blocks hotspot sharing on most of its uncapped plans, so tethering is the first line to check on the destination page. All 1,129 plans in the HelloRoam catalog allow hotspot sharing, and Airalo allows it on its metered plans. Where a shared connection matters, a 10GB metered plan at $8.26 is a safer buy than an uncapped plan with tethering switched off.
Does unlimited eSIM data handle video streaming abroad?
Uncapped plans carry no volume ceiling, so streaming never exhausts them. Holafly sells that product across 160 destinations from $19 for 5 days. Streaming is also what pushes a trip past the break-even point, since two hours of HD video runs close to 3GB. A week of nightly viewing clears 20GB, which is the volume where uncapped data starts to win.
How much does unlimited eSIM data cost per day?
Holafly's ladder works out to $3.80 a day on the 5-day plan at $19, $3.40 a day on the 10-day plan at $34, and $1.80 a day on the 30-day plan at $54. Metered data prices differently. A 10GB plan at $8.26 runs 30 days, so the daily figure follows how fast the 10GB goes rather than the calendar.
Is Holafly really unlimited?
Holafly plans carry no volume cap and no slowdown imposed by Holafly itself, which is unlimited in the sense buyers mean. The limit that remains belongs to the local partner carrier, which manages traffic during congestion in all 160 destinations. Hotspot sharing is blocked on most Holafly plans. Holafly scores 4.2/5 overall here, with price the main deduction.
Does HelloRoam have unlimited data?
No. HelloRoam sells metered plans only: 1GB at $1.14, 3GB at $3.22, 5GB at $5.22, 10GB at $8.26 and 20GB at $15.99. Anyone who wants genuinely uncapped data should buy Holafly, which starts at $19 for 5 days across 160 destinations. The metered ladder is the alternative for travellers who stay under about 20GB and want the lower price.
Is unlimited eSIM data worth the extra cost?
For a traveller under 10GB per trip, no. A metered 10GB plan costs $8.26 over 30 days, against $54 for Holafly's 30-day uncapped plan, so metered data wins by a wide margin at that volume. Uncapped data earns its price above roughly 65GB in 30 days, or for anyone with no WiFi behind the phone at any point.
Which destinations make unlimited eSIM plans worth buying?
Expensive data markets. HelloRoam charges $16.41 for 10GB in the United States, so a heavy month there passes Holafly's $54 30-day price quickly. Cheap markets run the other way, since 20GB in Thailand costs $15.99 and covers most trips outright. Holafly reaches 160 destinations against 185 in the metered catalog, so some routes have no uncapped option.
Can I switch to an unlimited plan in the middle of a trip?
Yes. A second eSIM profile installs over hotel WiFi or over the last megabytes of the current plan, and both profiles sit on the phone together. Holafly delivers the QR code by email after purchase. A metered plan takes the other route, since 1,124 of HelloRoam's 1,129 plans accept a top-up on the live eSIM, so no second profile is needed.
Do unlimited eSIM plans suit long-term or digital nomad travel?
For one country a month, yes. Holafly's 30-day uncapped plan costs $54 and needs no usage tracking at all. Multi-country routes need a separate plan per destination, which stacks up fast. A cheaper pattern pairs coworking WiFi with a 20GB metered plan at $15.99, or with Airalo regional bundles across its 200 destinations.