In short: You can store multiple eSIMs on your phone without issue (most phones store between 5 and 20 profiles), but only two lines can be active at a time. The rest remain archived, ready to be activated with a couple of taps. Installation is almost unlimited; parallel usage is limited to two.
This is one of the great advantages of eSIM technology, and at the same time, one of the most confusing. Many travelers believe their phone only supports one profile, or conversely, that they can use five at once. Neither is true. In this guide, we clarify the real limit per model, the difference between storing and activating, how to switch between profiles without reinstalling anything, and which line uses data. The idea is for you to land with internet, without roaming, and without stress, even if you have half a dozen pre-installed destinations.
How many eSIMs fit and how many can be used at once
Almost all modern mobile phones store between 5 and 20 eSIM profiles in memory, but only allow two lines to be active at the same time: one eSIM plus the physical SIM, or two eSIMs on models that support it. The rest of the profiles remain archived, turned off, consuming nothing, waiting for you to reactivate them.
The common confusion is thinking that "store" and "use" are the same. They are not. Your phone can store the eSIM of your home operator, the one from your last trip to Thailand, and the one you bought for Italy, all at once, without deleting any. What changes is which ones are on at a given moment. For a traveler, this is gold: you accumulate destinations without scanning QR codes over and over again, and in each country, you activate the correct one.
If you want to understand the basic way a phone handles two lines before continuing, it's a good idea to review how dual SIM works. It is the foundation upon which everything else rests.
Quick rule: installation is almost unlimited (up to the model's limit), but only two can be active. Think of it like a wallet with many cards where only two fit in the ATM slot at a time.
Stored vs. active: the key difference
Here's the concept that unlocks everything. An eSIM practically has two states: stored and active.
A stored eSIM is an installed profile that remains in the phone's manager even when turned off. It doesn't consume battery or data while inactive, and you can turn it on when you land in its country. An active eSIM is one that is currently connected to the network: it appears with coverage in the top bar and can receive calls, SMS, or browse depending on how you configure it.
This separation is what makes eSIM so convenient for travel. Imagine flying from Madrid to Jakarta with a stopover in Istanbul. You can have the eSIMs for Turkey and Indonesia pre-installed from home, keep your Spanish operator's eSIM off to avoid paying roaming, and turn each one on as you arrive. No more desperately searching for airport Wi-Fi or buying a local SIM in a shop you can't find.
Storing many profiles does not slow down your phone; it only occupies a small internal record. And if you won't be returning to a destination later, you can always clean it up by following the guide to delete or remove an eSIM and free up space. However, be careful before deleting: once deleted, to use it again, you will normally need the original QR or a new profile.
Limit by model (iPhone, Samsung, Pixel)
The number of profiles you can store depends on the manufacturer and the year of the device. There is no single standard: Apple is generous, Samsung and Google are somewhat below. These are the usual ranges you will see in practice.
| Model | Stored eSIMs (approx.) | Active at once | Dual eSIM without physical SIM |
|---|---|---|---|
| iPhone 13 / 14 / 15 / 16 | Up to 8-20 profiles | 2 lines | Yes |
| iPhone XS / XR to 12 | Up to 8-10 profiles | 2 lines (1 eSIM + 1 physical) | No |
| Samsung Galaxy S23 / S24 / S25 | Up to 5-7 profiles | 2 lines | Depending on region and model |
| Google Pixel 7 / 8 / 9 | Several profiles | 2 lines | Depending on Android version |
On iPhones, from the 13 onwards, you can have two active eSIMs simultaneously without needing a physical SIM, which is very practical if you separate work and travel or if you have two numbers on the same device. On most Samsung and Pixel phones, the classic combination is one eSIM plus one physical card, although more recent models already allow two eSIMs depending on the region and software version.
An important nuance: the exact number of profiles that fit can vary with system updates, so take this as guidance and not as a fixed number. For specific details on the Apple ecosystem, you have the complete reference on how many eSIMs an iPhone can have.
How to switch between your eSIMs step by step
Switching from one profile to another does not require reinstalling anything or scanning the QR again. It takes two minutes from the mobile network settings. The general process is this.
- Open Settings → Mobile Data on iPhone (or Connections → SIM Manager on Samsung, Network & Internet → SIM on Pixel).
- Select the eSIM you want to activate and turn it on; deactivate the one you are not going to use.
- Choose which line will use mobile data and which will handle calls and SMS.
- If the phone doesn't connect to the network instantly, toggle airplane mode on and off, or restart.
This is the exact same panel where you first installed the profile. If you need to review that initial step, you can find the details in how to install an eSIM. The key is that the change is reversible and free: you can switch back and forth between profiles as many times as you want without spending data or requesting a new profile.
Many travelers leave their home eSIM on only to receive bank SMS and verification codes, and set the destination's data eSIM as the primary line for browsing. This distribution of data and calls between two profiles is the essence of well-planned dual SIM usage.
Which eSIM uses data and calls
When you have two active lines, your phone lets you decide which one uses data and which one manages calls and messages. They don't mix: you can browse with the data eSIM of the country you're visiting while keeping your Spanish number for incoming calls. This prevents bill shock, because the destination's data line doesn't charge for roaming.
The most typical and costly mistake is accidentally leaving your home line active for data abroad. All it takes is for an app to update in the background for roaming charges to start accumulating without you realizing it. That's why it's advisable to go into settings as soon as you land, even before leaving the plane, and confirm two things: that the data eSIM is the one for your destination and that data roaming for your home line is disabled.
If you usually share your connection with your laptop or tablet, remember that the hotspot uses the data line you have set as primary. If that's the destination's, you share internet without roaming; if by oversight it's your home line, the bill will skyrocket. And if you're traveling with family and several devices need internet, you might be interested in setting up a separate eSIM on each device instead of saturating a single phone with the hotspot.
What almost no one tells you
Beyond the basics, there are details that rarely appear in guides and that make the difference between a connected trip and an afternoon fighting with settings. These are the ones that really matter.
Storing a profile does not activate it: you have to turn it on separately
Installing an eSIM and activating it are two different actions. You can have the profile downloaded for months, and still not be able to browse until you turn it on and mark it as the data line. If you land and have no internet, the first thing you should check is not the coverage, but whether the correct profile is activated.
Expiration runs even if you don't use the eSIM
An archived profile may have expired without you touching it. Many plans start counting their validity from the first connection to the network, but others have a fixed expiration date. Before relying on an eSIM you bought half a year ago, check its conditions. Don't assume it's still alive just because it's on the list.
Renaming profiles saves you from activating the wrong one
By default, many eSIMs appear with generic names like "Mobile Data 2" or the wholesale operator's name, which is repeated across countries. If you have three or four, it's very easy to accidentally turn on the one for Portugal when you're in Morocco. Rename each one with the country and date ("Morocco Jul-26") as soon as you install it.
The QR is single-use
This catches a lot of people. The installation QR code usually only works once. If you delete the profile thinking you'll reinstall it later with the same QR, you might find yourself unable to do so. Store the profile turned off instead of deleting it if you think you'll return to that destination, and don't delete an eSIM in the middle of a trip without being sure.
Install with Wi-Fi before flying
To download the profile, you need an internet connection, and that's precisely the resource you lack when landing in a new country. Have everything installed at home, with Wi-Fi, and just turn on the correct profile when you arrive. It's the difference between having internet as soon as you get off the plane or desperately searching for an open network at the terminal.
Tips for travelers with many profiles
When you accumulate eSIMs from several trips, a little organization makes all the difference. These habits save time and headaches.
- Rename each profile with the country and date to avoid confusion in the list.
- Turn off your home line for data before taking off and leave it only for SMS if you expect verification codes.
- Check the expiration date of archived eSIMs before counting on them for your next trip.
- Install before flying, with Wi-Fi, to avoid relying on finding a network upon arrival.
- Reduce data consumption for the data eSIM by disabling background updates and lowering streaming quality; you can find more ideas in the guide on tips to save data.
- Delete those you no longer use only if your model has few free slots, and never in the middle of a trip.
With these simple steps, a single phone can serve you across half the world without hassle. All your eSIMs coexist, and you decide at each border which one to activate. In practice, it's like having a drawer full of data cards always at hand inside your phone. If your next destination is Europe, the United States, or a getaway in Spain, you can get the profile ready now with an Europe eSIM or a United States eSIM and add it to the profiles you already have saved, all from the same phone.
Frequently asked questions
Can I have two active eSIMs at once?
Yes, if your phone supports it. iPhones from the 13 onwards allow two eSIMs to be active simultaneously without a physical SIM. Most Samsung and Pixel phones combine one active eSIM with the physical SIM, although recent models also support two eSIMs depending on the region. In all cases, you can store many more profiles turned off and activate them when you need them.
How many eSIMs can be stored on a phone?
It depends on the model. A recent iPhone stores between 8 and 20 profiles, while many Samsung and Pixel phones store around 5 to 7. Storing inactive profiles doesn't consume battery or data; they only take up a small internal record until you activate them. The exact number can change with system updates.
Do all my eSIMs use data at once?
No. Only the eSIM you have designated as the mobile data line consumes data. The others, even if installed, remain inactive and do not browse or incur charges. That's why it's advisable to check in settings which line is selected every time you change countries.
Do I have to reinstall the eSIM every time I switch profiles?
No. Once installed, the eSIM remains stored even if you turn it off. To use it again, you just go to the mobile data settings, activate it, and choose whether it will use data or calls. There's no need to scan the QR code again or request another profile. It's different if you delete it: in that case, you will need the original QR or a new profile.
Can I use a data eSIM and my Spanish number at the same time?
Yes, and it is the most recommended option when traveling. You leave your Spanish number active to receive calls and SMS, and use the destination's data eSIM to browse without roaming. This way, you keep your usual line reachable without paying high data rates. Just make sure the data line selected is the one for your destination.
Does storing many eSIMs slow down or drain the battery of my phone?
Not noticeably. A turned-off profile doesn't connect to any network, so it doesn't consume battery or data. It takes up a small record in the SIM manager, nothing that affects performance. You can accumulate several destinations without noticing a difference in your phone's speed or battery life.
What if my phone only supports one active eSIM plus the physical SIM?
You can still store multiple eSIM profiles and switch between them, but you will only have one eSIM active at a time along with your physical card. In practice, for travel, this is more than enough: you use the destination's eSIM for data and the physical SIM for your number. The other profiles wait turned off for their turn.
Conclusion
Storing multiple eSIMs is almost unlimited up to your model's capacity, but only two lines can be active at a time, and you decide which one uses data. With well-named profiles, checked expiry dates, and your home line turned off for data, a single phone can accompany you around the world without changing phones or numbers. Prepare for your next destination with the eSIM already installed and ready, and land with internet, no roaming, and no stress.
