Is an unlimited plan really unlimited?
Unlimited in total volume, but speed-limited after a daily threshold — for example 2GB at full speed per day, then about 512 kbps until the next reset. If you stream a lot every day, compare the daily thresholds rather than the word 'unlimited'.
The word 'unlimited' on a travel eSIM plan does not mean using as much as you want with no condition attached at all. Nearly every plan built this way follows the same structure: full speed up to a daily data threshold, then a reduced speed after that until the next reset. Total volume genuinely has no fixed cap, but speed always does. This page sets out that mechanism plainly, along with how to check exactly what daily threshold applies to the plan you are actually looking at.
It suits anyone comparing an unlimited plan against a plan with a fixed GB allowance, anyone planning to stream video or run heavy video calls every day of the trip, and anyone who bought an unlimited plan before and felt the connection slow down partway through without knowing why. This does not state a fixed threshold or speed figure that applies to every plan, because the real numbers vary by each plan's own supplier and destination country — always check that plan's own page directly.
The structure most unlimited plans are built on
Most unlimited plans deliver full speed, as capable as the local network allows, until data used that day reaches a set threshold — full speed up to some daily amount, then a reduced speed after that point. Both the reduced speed level and the daily threshold are figures that vary from plan to plan; they are not the same fixed value across every unlimited plan sold on this site.
This threshold usually resets on a rolling basis, tied to a 24-hour cycle from whenever the plan started, not necessarily local midnight, and not every supplier counts the cycle the same way. If the exact reset timing for a specific plan matters, check that plan's own detail or ask the team directly.
Why no one sells 'unlimited with absolutely no speed cap'
Every mobile network has a limited capacity to serve concurrent users at any given moment. With no speed cap at all, a small number of extremely heavy users would pull most of that capacity, leaving other users on the same network with barely any usable connection. The speed cap that kicks in after a daily threshold is what keeps unlimited plans genuinely workable for most users, not merely a marketing device.
This is why 'unlimited', across almost this entire industry, means unlimited total volume rather than unlimited speed. Understanding that from the outset makes comparing plans far more useful, rather than deciding purely on the word 'unlimited' by itself.
How different full speed and the reduced speed actually feel
During the full-speed period, ordinary tasks such as navigation, messaging, browsing, and social media usually feel just as smooth as home internet. The reduced-speed period is still enough for text and lightweight pages, but the difference becomes noticeable with high-resolution video or a long video call. How noticeable that difference feels depends on the exact speed figures for each plan, which are not stated as a fixed number here, since they vary by plan.
If daily high-resolution streaming or work video calls are part of the plan for the trip, always check that plan's daily threshold before buying, since those activities tend to use data far faster than ordinary tasks and can reach the daily threshold sooner than expected.
How to find the actual daily threshold for a specific plan
- 1Open the specific plan page being consideredGo directly to that plan's own detail page, not a general country listing or a comparison page.
- 2Find the line stating 'full speed up to' or a description of the daily thresholdUnlimited plans with a daily threshold usually state the figure clearly in the plan detail. If this wording cannot be found at all, ask the team before deciding to buy.
- 3Check whether the reduced speed is stated as a numberSome plans state the reduced speed clearly; others just say 'speed reduced' without a figure. If this matters, favour a plan that states the number clearly.
- 4Use the data calculator to estimate your own usageRoughly estimate how much data the planned daily activities might use, and compare that against the daily threshold of the plan under consideration.
- 5If still unsure, ask the team before buyingContact the team via LINE or email, naming the plan of interest and describing the planned usage, to get an answer that is specific to that actual plan.
Unlimited plans compared with fixed-GB plans
Pros
- No need to keep checking how many GB are left mid-trip
- Suits trips where daily usage is unpredictable and sometimes heavy
Cons
- Speed drops after the daily threshold, even though total volume has not run out
- The daily threshold and reduced speed vary by plan, so both must be checked every time before buying
A fixed-GB plan runs at full speed the whole way through until the purchased data is used up, with no speed reduction along the way, but it needs watching so the allowance does not run out before the trip ends. For a short, light-usage trip, this type of plan is often better value and easier to predict.
What uses up the daily threshold faster than expected
High-resolution video streaming and long, continuous video calls tend to use data noticeably faster than ordinary tasks. Uploading large files — automatic cloud photo backup, for example — is another activity that often uses a surprising amount of data without the user noticing, since it runs in the background without the app needing to stay open.
We do not state exact figures for how much data these activities use, since that depends on video resolution, app settings, and each person's actual duration of use. For a rough estimate to plan around, use the data calculator.
Multi-day trips and when the threshold resets
A multi-day unlimited plan usually resets its daily threshold fresh each day on its own set cycle, rather than rolling unused allowance over to the next day. That means if one day uses less than the threshold, the remainder simply disappears once the new cycle begins — it does not carry over.
A sensible approach is to spread out heavy-data tasks — uploading trip videos or backing up a large batch of photos, say — across days when the threshold is not already being used up, rather than saving them all for one day near the end of the trip, which can hit the threshold sooner than expected.
Common misunderstandings about the word 'unlimited'
The most common misunderstanding is assuming 'unlimited' means speed stays constant all day no matter how much is used, when in fact the word only addresses total volume and guarantees nothing about constant speed. Another common misunderstanding is assuming the daily threshold is the same across every unlimited plan, when the figure actually varies by each plan's own supplier and destination country.
Yet another misunderstanding is assuming the reduced speed becomes unusable altogether. In practice it usually remains fine for messaging and light browsing — it simply is not suited to high-resolution video. The exact level again varies by plan.
Can an unlimited plan be used as a hotspot for other devices?
Many suppliers allow sharing internet from the eSIM line to other devices through a hotspot — a laptop or tablet carried along on the trip, for instance. But not every plan allows this. Some plans state clearly that hotspot use is supported, others do not mention it at all or restrict it to certain conditions. Always check the hotspot line on that plan's page before planning to share the connection with another device.
If a hotspot is opened from an unlimited plan, the data used by the other device through that hotspot is usually counted into the same daily threshold that the main phone itself is using — there is no separate threshold reserved for a device sharing the connection. So if the hotspot is left on for another device streaming video at the same time, the combined daily threshold across both devices can be reached far sooner than expected.
The last day of the trip: should data use be planned any differently?
Many travellers want to upload all the trip's photos and videos on the very last day before flying home, which happens to be exactly the day the heaviest data use tends to land. If the plan is an unlimited one with a daily threshold, uploading a large batch in a single day can hit that threshold sooner than expected, cutting speed right when checking in or looking up flight details actually matters most.
Spreading the uploads out across the days before departure, or uploading over the accommodation's Wi-Fi instead of the eSIM's data on the day mobile data is needed most, usually reduces the chance of speed dropping exactly when it is least wanted.
If the plan page states no daily threshold at all
Some plans using the word 'unlimited' do not spell out a daily threshold or a reduced speed figure on the plan page at all, either because that supplier chooses not to disclose the numbers, or because that plan's structure differs from the common daily-threshold model. It is not safe to assume the figures are probably close to some other plan seen before, since each supplier sets its own terms entirely independently.
If this figure genuinely matters to the decision — daily work video calls throughout the trip, for example — ask the team via LINE or email before buying, naming the specific plan clearly, rather than guessing and finding out afterwards that it did not match expectations.
Group trips: several people each using a separate unlimited plan
When travelling as a group and each person buys their own separate unlimited plan, each person's daily threshold is entirely independent — it is not pooled together or shared among the group's members. If one travelling companion uses heavy data on a given day and their own speed drops, that has no bearing at all on the speed of another person using a completely separate plan.
What is worth watching for is that if one person opens a hotspot from their own plan to share with other travelling companions, the data those companions use through that hotspot counts only against the plan owner's own daily threshold — it is not split off and counted against anyone else's. It is worth agreeing within the group in advance who will share their connection with whom, so no one plan owner ends up hitting their threshold sooner than intended.
When to pick unlimited, and when to pick a fixed allowance instead
| Trip pattern | Option that usually suits better |
|---|---|
| Heavy, unpredictable use — daily streaming or video calls | An unlimited plan, but always check the daily threshold first |
| Short trip, light use — mostly maps and messaging | A fixed-GB plan sized to match the trip |
| Unsure how heavy the actual usage will be | Use the data calculator to estimate before deciding |
- Open that plan's own detail page directly, not a general listing
- Find the daily threshold and the reduced speed before deciding to buy
- Estimate heavy-data activities with the data calculator
- Spread heavy uploads across several days rather than doing them all in one
- If any figure is unclear, always ask the team before buying
Časté dotazy
Will an unlimited plan become too slow to even use maps?+
Generally the reduced speed is still enough for maps and messaging, but the exact level varies by plan — check that plan's own detail if this is a concern.
Is the daily threshold the same in every country?+
No. The daily threshold depends on each plan's own supplier and destination country — always check that specific plan's own page.
If a day's usage does not reach the threshold, does the remainder carry over to the next day?+
Generally not. The daily threshold usually resets fresh each day on its set cycle, and any unused portion disappears once the new cycle begins.
Is an unlimited plan a good fit for a short 2-3 day trip?+
It depends on usage pattern. For light use, a fixed-GB plan is often better value and easier to predict. For unpredictable, heavy daily use, unlimited may suit better. Try the data calculator to estimate before deciding.
Why do some unlimited plans not state the reduced speed as a number?+
It depends on how each supplier chooses to describe its own plan. If this figure matters to you, favour a plan that states it clearly, or ask the team before buying.
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