How to top up an eSIM: adding more data
Seeing your bundle shrink faster than expected? Good news: in many cases you can top up an eSIM without installing a new one. This guide explains how that works, when it's possible, and when you're better off getting a new eSIM.
Top up or buy again
There are two ways to add data. The first is topping up: you add volume to the eSIM you've already installed, without scanning anything again. The second is buying a new eSIM and installing it alongside. Topping up is handier, but it depends on the package: not every eSIM can be topped up.
Check in advance whether your eSIM can be topped up. If it can't, no problem: you simply install a new eSIM when needed.
How do you top up?
If topping up is possible, you go back to the shop where you bought the eSIM, choose a new volume for the same profile and pay. The credit is added to your existing eSIM, often within a few minutes. You don't need to reinstall anything: the same line keeps working with the new volume.
Top up before you run out completely, ideally while you still have some data or Wi-Fi within reach, so you can pay smoothly.
Better to estimate well in advance
Topping up is a handy fallback, but choosing the right volume at the start saves you hassle. Our guide how much data do you need while travelling helps you pick a suitable bundle, and the most affordable eSIM teaches you how to spot the best price-to-volume ratio.
Installing a new eSIM
If topping up isn't possible, installing a new eSIM is just as simple. You receive a new QR code and activation link by email. Follow our guides for iPhone or Android and set the new line as your default data.
Top up or buy again
| Aspect | Top up | New eSIM |
|---|---|---|
| Speed | Ready straight away | Reinstall required |
| Same number and profile | Yes | No |
| When to choose | Credit nearly gone | Bundle expired |
If your bundle can be topped up, that's almost always faster and easier than installing a completely new eSIM.
Frequently asked questions
Can I top up every eSIM?
No, that depends on the package. Check this in advance. Otherwise you simply install a new eSIM.
How quickly is the credit added?
With a successful payment, usually within a few minutes, without needing to reinstall anything.
Do I have to scan a QR code again to top up?
No. When topping up, the same line keeps working with extra volume.
Conclusion
Topping up an eSIM is often possible and very handy: you add data without reinstalling anything. Check whether your package allows it, top up before you run out, and otherwise simply install a new eSIM. At esimzu you receive everything instantly by email, with customer support.