It's common to wonder halfway through a trip: you're running out of data and you don't know if you can top up your eSIM or change your plan without reinstalling anything. The short answer is yes, often you can, but it depends on the type of profile. Here we explain when an eSIM allows top-ups, how to do it, and what alternative you have if the profile is not top-up eligible.
Can an eSIM be topped up?
Yes, many travel eSIMs can be topped up: when data runs out, you add a new package to the same profile without scanning another QR code or installing anything. The already installed profile remains on your mobile and simply gets data available again within minutes.
The key is to distinguish between a rechargeable eSIM and a one-time use one. Rechargeable ones are designed to be reused: you keep the same profile trip after trip and add plans to it. One-time use ones are consumed and expire, and to get internet again you buy a new one. In practice, most frequent travelers prefer an eSIM they can reactivate, because it avoids reinstalling the profile every time. If you want to fully understand this distinction, it's a good idea to read what a rechargeable eSIM is before deciding.
Key idea: topping up is not reinstalling. If your eSIM allows topping up, the profile stays where it is and you just replenish the GB or days; the original QR code is no longer needed.
Rechargeable eSIM vs. one-time use
Understanding what type of profile you have saves you surprises. This comparison summarizes the practical differences:
| Feature | Rechargeable eSIM | One-time use eSIM |
|---|---|---|
| Reusability | Yes, same profile for multiple trips | No, consumed and expires |
| When data runs out | You add a new plan | You buy another eSIM |
| Reinstall QR | Not necessary | New profile and installation |
| Ideal for | Frequent travelers | A specific trip |
A rechargeable eSIM is like a public transport card that you top up; a one-time use one is like a single ticket. Neither is "better" in the abstract: if you travel once a year, a one-time profile works; if you travel often, topping up the same profile is more convenient and organized. Also consider expiry: even if it's rechargeable, each plan has its validity, as we explain in how long an eSIM lasts before expiring.
How to top up data step by step
Topping up is a quick process done from the account where you purchased the eSIM, not from your phone settings. The general flow is this:
- Log in to your account or app where the installed eSIM appears.
- Select the active profile and choose the top up or add plan option.
- Choose the GB or days you need and confirm payment.
- Wait a few minutes: the new data is assigned to the same profile.
- Check the remaining balance to ensure the top-up was applied.
You don't have to touch the QR code or reinstall anything: the profile remains in Settings → Mobile Data exactly as it was. If at any point you want to know how much you have left before topping up, the guide on how to check how much data is left on your eSIM shows you how to do it. Topping up on time prevents you from running out of internet in the middle of a route or a transfer to the airport.
Change plan without scanning another QR
Sometimes you don't just want more data, but a different plan: to go from a 3 GB plan to a 10 GB one, or extend the duration because you're extending your trip. With a rechargeable eSIM, this is managed just like a top-up: you choose a new plan for the same profile and it replaces or complements the previous one, without scanning another QR.
The advantage is clear: you maintain a single clean profile on your phone instead of accumulating several partially used ones. If you change countries within the same trip, check that the new plan covers the destination; sometimes a regional plan is more suitable than adding individual countries. This organization also helps avoid confusing profiles when you have plans with different expiry dates. Changing plans cleanly is one of the great conveniences compared to the traditional physical SIM.
What happens when data runs out
When you run out of data, the eSIM stops providing internet, but the profile does not disappear from your phone. It remains installed, waiting for you to add a new plan to it. You don't lose the configuration or have to reinstall: the moment you top up, you'll have internet again on that same profile.
What's important to know is that running out of data is not the same as expiration. A plan can expire by date even if you have GB left, or run out of data before the deadline; whichever comes first, takes precedence. If your profile has fully expired and no longer supports top-ups, you'll need to install a new one, as detailed in what to do if your eSIM has expired. That's why monitoring your balance and date prevents you from being disconnected precisely when you most need a map.
Top up or buy another: what suits you best
The decision to top up or buy a new eSIM depends on your situation. These criteria help you choose quickly:
- Top up if your profile allows it, is still valid, and you're traveling to the same country or area.
- Buy another if the profile has expired, you're changing to an uncovered country, or you want to start fresh.
- Regional plan if you're traveling to several countries: it's more cost-effective than topping up one after another.
- Anticipate: top up before your balance reaches zero to avoid running out of data during a transfer.
- Check coverage for the new plan if you've changed destinations mid-trip.
Generally, if you have a rechargeable eSIM in good standing, topping up is always more convenient and organized than installing a new profile. If you're unsure whether to buy before or during your trip, the guide on buying your eSIM before or at your destination gives you guidance. The important thing is not to leave the top-up for the last minute, especially if you rely on your phone for navigation.
Frequently asked questions
Can I top up my eSIM when I run out of data?
If your eSIM is rechargeable, yes. You add a new plan to the same profile from your account or app, without scanning another QR code or reinstalling anything. You'll have data again in a few minutes. If the profile is for one-time use or has already expired, you'll need to install a new eSIM.
Does topping up delete my existing profile?
No. Topping up only replenishes the GB or days on the profile already on your mobile. The eSIM remains in Settings exactly as it was, with its same configuration. You don't lose anything or have to re-scan the QR; data simply becomes available again.
Can I switch to a larger plan without buying another eSIM?
Yes, with a rechargeable eSIM you can choose a different plan for the same profile, for example, going from 3 GB to 10 GB or extending the days. The new plan applies to the existing profile without installing another one. Check that it covers your destination if you have changed countries during your trip.
What happens if my eSIM expires before I top it up?
If the plan expires by date, the profile may no longer support top-ups, and you'll need to install a new eSIM. Running out of data is not the same as expiring: a plan can expire even if you have GB left. Monitor both your balance and the date to avoid being disconnected.
Is it better to top up or buy a new eSIM?
Topping up is more convenient if your profile allows it, is still valid, and you're traveling to the same country. Buy a new one if the profile has expired, you're changing to an uncovered destination, or you want to start fresh. For multiple countries, a regional plan is usually better than topping up one after another.
Conclusion
Topping up an eSIM or changing plans without buying another is possible as long as your profile is rechargeable and still valid: you replenish GB or days on the same profile, without scanning another QR. Monitor your balance and date to avoid running out of data at the worst moment. Choose a rechargeable eSIM and travel with the peace of mind of being able to replenish data in a minute whenever you need it.
