What is an eSIM Plus?
An eSIM Plus is an additional digital profile you install on your phone to add mobile data when you travel, without touching your main line or your physical SIM. Instead of replacing your SIM, it complements it: you activate a second profile, choose how many gigabytes you need, and start browsing as soon as you arrive at your destination using the local network available.
The name can be confusing because it's not a brand or a product with that exact name — it's a common way to describe an eSIM that you add, "plus," to what you already have. Your phone still receives calls and messages with your usual number, while the additional profile handles only the data you use in the country you're in.
Think of an eSIM Plus as an extra suitcase you bring just for data: it doesn't replace your main luggage, it simply gives you extra room when you need it.
If you've never installed an eSIM and want to understand the technology from scratch before reading on, the guide what is an eSIM explains the basics in more detail.
How does an eSIM Plus work on your phone?
Technically, most modern phones already have an eSIM chip built into the board, in addition to the physical slot for your regular SIM. When you buy an eSIM Plus, what you receive isn't a chip to insert, but a QR code or an activation file that your phone reads to install a new profile inside that built-in chip.
Once installed, that profile is saved as an independent line. Your phone can keep both active at the same time: your local line continues to receive calls and SMS, while the eSIM Plus is used exclusively for browsing with the data plan you bought for that trip. You can turn each line on or off from your phone settings at any time, without needing to restart the device or visit a store.
Not all phone models support this feature, so before buying it's worth checking if yours is compatible. You can confirm this in the guide to eSIM-compatible phones, and the step-by-step installation is detailed in how to install an eSIM.
Real example: using an eSIM Plus on a trip
Imagine you live in Bogotá and have a one-week business trip to Los Angeles. Your local phone plan works fine in Colombia, but outside the country your carrier's roaming charges you per megabyte or forces you to buy a roaming package that's usually more expensive than a data plan designed for tourists.
With an eSIM Plus, a few days before traveling you install the data profile for the US from your home Wi-Fi. You don't need to activate it yet: the profile stays saved on your phone, ready to use. The day you land, you activate the data line in settings, your phone connects to a local network automatically, and within minutes you have mobile data working — no need to find a counter at the airport or rely on hotel Wi-Fi.
During the week you use your phone for navigation, messaging, and social media with that data, while your Colombian line remains available for calls and emergency SMS. When you return to Bogotá, you simply deactivate the trip's data line; you don't need to uninstall it if you plan to go back to that city on another trip, though each profile is usually tied to a specific amount of data and validity period.
This way of handling data abroad is different from traditional roaming, which depends on an agreement between your home carrier and a local one. If you want to compare both options in depth, the guide eSIM vs roaming details when each one is best.
Which company gives a free eSIM?
This is a common question, and the honest answer is that there is no permanent free eSIM Plus: mobile data has a real cost for any provider, whether local or international. What does exist in the market are occasional trial promotions with a small amount of free data, mainly designed so you can check that your phone is compatible before paying for a full plan. These promotions change frequently, and it's best to check them directly on each provider's site before assuming they are still valid.
What you can control is not paying for something you haven't used yet. PuraSIM gives you up to 180 days from purchase to activate your eSIM: you can buy and install it at your leisure, even weeks before your trip, and the plan doesn't start until you decide to activate it. If your trip gets postponed, the plan is still waiting.
What are the disadvantages of eSIM?
Like any technology, eSIM has limitations worth knowing before relying on it for an important trip.
The first is compatibility: not all phones, especially older models or some versions sold exclusively for certain markets, include the necessary eSIM chip. If you're not sure about yours, check the list of eSIM-compatible phones we mentioned in the previous section.
The second is that, being a digital profile, you can't take it out of one phone and physically put it into another like you would with a traditional SIM; if you switch devices, you usually need to reinstall the profile or request a new one. The third is that installing the profile requires an internet connection at that moment, either Wi-Fi or data, so it's not something you can sort out without any prior connection. Finally, some phone models limit how many eSIM profiles you can store or have active at the same time, which can be a hassle if you travel frequently to different countries and accumulate several profiles.
None of these limitations are usually serious if you know about them in advance and prepare your phone a few days ahead. The guide on common eSIM problems covers how to solve the most typical issues before they catch you off guard in the middle of your trip.
Which is the cheapest eSIM?
There is no single answer, because the price of an eSIM Plus depends on several variables that change depending on the destination, the amount of data, and how long your trip lasts. Comparing only the final price without looking at what that price includes often leads to a bad choice.
| Factor | Why it affects the price | What to check before buying |
|---|---|---|
| Validity period | Longer plans usually cost more, but lower the price per day | That the validity covers the entire trip, not just half of it |
| Amount of data | More gigabytes mean a higher total plan cost | How much you actually use on a normal travel day |
| Destination coverage | Some countries have more expensive networks for the provider to contract | Whether the plan covers a single country or several on your route |
| Auto-renewal | Some plans renew automatically and charge again without warning | Whether you can cancel the renewal before it charges |
| Included support | A provider without accessible support can cost you more in lost time | Which channel you can use to ask for help if something goes wrong |
On this last point, PuraSIM offers 24/7 support in all languages via email and WhatsApp, so if something doesn't work during your trip, you have someone to write to without relying on a phone line or office hours.
Which company has eSIM in Mexico?
If you are looking for an eSIM for your local line within Mexico, the country's main operators already offer the technology on compatible phones; it's best to confirm directly with your carrier whether your specific plan and device support it, because availability varies by model and contract type.
If instead you are looking for an eSIM Plus to use mobile data when traveling outside Mexico, or when someone travels to Mexico from another country, PuraSIM covers that case: it works with over 200 destinations, so Mexico is among the countries where you can activate an international data plan without relying on your local carrier's roaming.
eSIM Plus vs physical SIM: what's the difference?
The main difference is not the quality of the connection, which depends on the local network in both cases, but rather how the plan is installed and managed.
| Aspect | eSIM Plus | Physical SIM |
|---|---|---|
| Installation | QR code or digital file, from anywhere with Wi-Fi | Plastic chip that needs to be picked up or received physically |
| Two lines at once | You can keep your local line active alongside the data line | Depends on the phone having a dual physical SIM slot |
| Switching phones | Requires reinstalling or requesting a new profile | Just take the chip out and put it in the other device |
| Risk of loss | Cannot be physically lost or damaged | The chip can be lost, bent, or damaged |
| Availability on arrival | Ready before you leave home | Depends on finding a point of sale at your destination |
Neither option is better in every case: it depends on your phone, your travel habits, and how much you value not depending on a physical counter when you arrive. If you want to dive deeper into this comparison, the guide eSIM vs physical SIM goes into more detail on each scenario.
How to Activate an eSIM Plus Step by Step
The process is simpler than it seems the first time, and generally takes about a minute once you have the code at hand.
- Confirm your phone is eSIM compatible before buying the plan.
- Buy the data plan for your destination and receive the QR code or installation file by email.
- Connect to Wi-Fi and install the profile from your phone's line settings by scanning the code.
- Leave the profile installed but not activated if your trip is still a while away.
- When you arrive at your destination, activate the data line from settings and confirm your phone has connected to a local network.
One detail few travelers take advantage of: you don't have to wait until the last day to install the profile. Since PuraSIM gives you 180 days from purchase to activate the eSIM, you can install it weeks in advance, comfortably at home, and the plan's validity countdown doesn't start until your phone connects to a network in the destination country for the first time. This way you avoid rushing at the airport and lose nothing if your trip dates change.
If you want the full step-by-step with screenshots by operating system, check out the installation guide we linked above. And if you're planning a longer trip with multiple stopovers, the ultimate eSIM travel guide covers how to organize data for routes with more than one country.
Frequently Asked Questions
Does an eSIM Plus replace my regular phone line?
No. The eSIM Plus installs alongside your main line, not instead of it. Your number still receives calls and messages while the eSIM Plus handles only the mobile data for your trip.
Do I need Wi-Fi to activate the eSIM Plus at my destination?
You only need it to install the profile, not to activate it. You can install it from your home Wi-Fi before traveling and activate it later, at any time, without needing Wi-Fi at that moment.
Can I use two eSIM Plus at the same time if I visit two countries?
It depends on your phone: some models let you store multiple eSIM profiles although only one is active at a time, and others limit how many you can have active simultaneously. It's worth checking before a trip with multiple stopovers.
What if my phone isn't eSIM compatible?
If your phone doesn't have a built-in eSIM chip, this solution isn't for you and you'd need a physical local SIM or a traditional roaming plan. You can check the list of compatible devices before buying.
Does the eSIM Plus work the same as my local plan's data?
It works similarly for everyday browsing, but it's an independent plan with its own data allowance and validity, designed specifically for the country or countries you're traveling to.
Can I get help if I have a problem during my trip?
Yes. PuraSIM offers 24/7 support in all languages by email and WhatsApp, so you can write in the moment the issue arises, without depending on office hours.
How long does it take to activate an eSIM Plus?
Activation takes about 1 minute once you decide to turn on the data line, as long as the profile is already installed on your phone.
How many countries can I use a PuraSIM eSIM Plus in?
PuraSIM covers more than 200 destinations, so most trips, whether to a single country or with multiple stopovers, are covered with this type of plan.
In Summary: Is an eSIM Plus Right for You?
An eSIM Plus makes sense when you want reliable mobile data in another country without giving up your local line or overpaying for your carrier's roaming. It doesn't replace your physical SIM, it complements it, and once you understand that you install it before the trip and activate it when you arrive, the rest of the process is straightforward.
If your next trip already has dates, the best starting point is to confirm your phone is compatible and then check the plans available for your destination in PuraSIM's international eSIM collection. And if you'd rather first understand the complete process from start to finish, the ultimate eSIM travel guide we linked earlier is a good next step before buying.
