Does leftover data disappear when the plan expires?

Yes. Leftover data does not carry over to a new plan and is not refunded. Choose a validity that matches your trip, and if you are running low, top up before expiry rather than after.
This question usually comes from a frequent traveller who has data left over from a previous trip and is hoping it can be saved for the next one. This page explains why the answer is mostly no, how the system behaves in the background when a plan expires, and how to plan a purchase so the next trip does not waste allowance needlessly.
The most important thing to understand first is that most travel plans are designed as a single, self-contained bundle: data allowance and validity period are tied together as one unit. Once either side reaches its limit — data running out first, or validity expiring first — the whole plan is treated as finished.

How data allowance and validity are tied together
Every plan has two main variables: the amount of data allocated, and the length of time it is valid for. These are separate things that work together. You might use up the data before the validity period ends, or the validity period might end before you use up the data. Either way, the outcome is the same: the plan stops working. A common misunderstanding is assuming that if data remains, the plan keeps working past its expiry date, which is not the case.
Why leftover data does not carry over to a new plan
The technical reason is that each plan is a fully separate usage contract. When you buy a new plan, the system creates an entirely new set of figures for both data and validity; nothing is pulled forward from the old one. Even if the old plan still had data remaining at the exact moment it expired, buying a new plan always starts counting from zero.
This lack of carry-over is not specific to any one provider; it is a general characteristic of most travel eSIM plans in the market, because they are priced per trip rather than as a monthly subscription with balances accumulating across billing cycles.

The refund policy on unused data
Unused data at expiry is not refunded either. The same logic that explains no carry-over also explains no refund, because a plan is sold as a right to use within a defined time window, not as units of data that can be exchanged back for cash according to the amount left.
This is why choosing a plan size that matches the actual trip matters far more than buying a large allowance just in case, since over-buying tends to end with data left unused and neither the allowance nor the money paid for it can be recovered.
How to choose a validity length that matches your trip
The most straightforward approach is to count the total days of the trip from the expected activation date through to the return date, then choose a plan whose validity covers that span exactly or with a small margin, rather than defaulting to habit or whatever plan was used on a previous trip, since each trip has a different length and pattern of use.
If the trip has an uncertain return date, such as a possible extension or early return, it is better to build in a small margin on plan length than to under-buy, since topping up or buying new before the old plan expires is far easier than having it run out mid-trip with no warning.

Topping up before expiry versus buying new after expiry
| Situation | What happens |
|---|---|
| Topping up or buying new before the current plan expires | Connectivity stays continuous, since the old plan is still working while the new one prepares to start |
| Letting the plan expire before buying a new one | There is a window with no connectivity at all between the old plan ending and the new one starting |
| Buying a new plan while the old one still has plenty of data left | The old plan's remaining data is usually wasted, since the new plan counts separately from zero |
What happens technically when a plan expires
At the moment the set time is reached, the provider's system automatically closes off network access for that profile, regardless of how much data remains. The profile stays installed on the phone as before, but it can no longer attach to a network, so you will see a "no service" indicator, or the line will appear on but with no network to attach to.
Expiry is therefore not the same as the profile being deleted from the phone; it only closes off that profile's connection right. If you want a new plan on the same phone, you will normally need to install a fresh profile, since most plans are tied to a specific profile that can typically be installed only once. Deleting an old profile is normally not reversible.

Can multiple plans run at once or overlap?
Most current phones can have several eSIM profiles installed at once, but typically only one can serve as the active data line at a time. Having two plans installed does not mean data is drawn from both simultaneously; it gives you a fallback to switch to, for instance while waiting for a new plan to start, or if one plan has a signal issue in a particular area.
Checking remaining data and days during a trip
- 1Open the app or plan management pageSign in with the account used to buy the plan and select the plan currently in use.
- 2Check remaining dataThe plan page usually shows data used and remaining in near real time.
- 3Check remaining days or hoursCheck the validity counter alongside the data figure, to see which side will run out first.
- 4Decide whether to top up or buy a new planIf either data or validity is close to running out before the trip ends, prepare to top up or buy new in good time.
- 5Complete the transaction before the old plan expiresBuy and install the new plan while the old one is still working, so there is no gap in connectivity while it takes effect.
What to do if the trip runs longer than planned
If a trip extends beyond the original plan, the safest approach is to check remaining data and days as soon as the extension is known, then plan to top up or buy a new plan before the current one actually expires, rather than waiting until its final day. Buying and installing a new plan takes a little time and generally needs internet access to complete, and if the current plan has already expired, there may be no way to reach the internet via the eSIM line to download a new profile in some situations.
Common mistakes around plan expiry
- Buying a new plan too early hoping old data will merge in, when a new plan always counts separately
- Waiting until the very last day of the old plan before buying new, risking a connectivity gap
- Buying a larger plan than needed just in case, then losing the leftover at expiry
- Not checking remaining validity until signal is already gone mid-trip
- Assuming leftover data can be refunded as money, when unused data is not refunded
Common expiry-related symptoms, causes, and fixes
| Symptom | Likely cause | What to do |
|---|---|---|
| No signal even though plenty of data remains | The validity period has ended even though the data allowance has not | Check the validity counter in the app to confirm, then buy a new plan if further use is needed |
| Data runs out before the expected expiry date | Heavier use than expected, such as video streaming or frequent hotspot sharing | Buy a top-up or new plan, and consider adjusting data habits for the next trip |
| Bought a new plan and the old data disappeared entirely | This is normal behaviour, since a new plan does not merge in the old plan's balance | Plan the next purchase for closer to when the current plan is due to expire, on future trips |
| Requested a refund for unused data but did not receive one | Unused data is not normally within the refund terms for this type of plan | Check the refund terms on the plan page before the next purchase, and choose a size closer to actual need |
Alternatives worth weighing before buying a fresh plan every time
Pros
- Buying a fresh plan sized to the next trip means paying closer to what you actually use
- You get a full new data and validity allowance, with no limitation carried over from before
Cons
- You must size each plan afresh rather than simply continuing an old balance
- Under-sizing it can mean topping up mid-trip, which needs internet at that moment
FAQ
Can leftover data be saved for the next trip?+
No. Leftover data disappears at expiry, and a new plan starts its own separate data and validity count from scratch.
If data runs out before the validity date, can the plan still be used?+
No. Once the data runs out, even if the validity period has not ended, the connection stops working. A top-up or new plan is needed to restore it.
Is there a refund for unused data?+
Generally not. A plan is sold as a right to use within a set time window, not as data units exchangeable back for cash.
Is it worth buying a new plan while the old one still has plenty of data?+
Not usually, since the old plan's remaining data is wasted the moment the new one takes over. It is better to wait until the old plan is close to expiring before buying new.
What should I do if a trip is extended suddenly?+
Check remaining data and validity immediately, then buy a new plan or top up before the current one actually expires, ideally while the current plan still provides internet to do so.
Is the eSIM profile deleted from the phone when a plan expires?+
No, it is not deleted. The profile remains installed as before; it simply can no longer connect to a network because the usage right has ended.
For back-to-back trips, how should plan purchases be timed?+
Plan for the new one to start close to when the current plan is due to expire, not while it still has plenty of data left, to reduce waste and avoid a connectivity gap between trips.