eSIM para viajes internacionales: la guía definitiva para conectarse en el extranjero

In this guide, we’ll walk you through everything you need to know about using eSIMs while traveling, including the benefits, how to set one up, and tips for finding the best international plan for your needs. 

¿Qué es una eSIM?

An eSIM, or “embedded SIM”, is a digital SIM built directly into your device. Unlike traditional SIM cards, which are removable and require physical handling, an eSIM is integrated directly within the device’s hardware. In other words, there’s no need to fumble with tiny cards anymore. This built-in digital SIM lets you connect to a network without physically inserting or swapping anything, making setup quicker and more convenient. 

eSIM vs. a physical SIM card

Physical SIM: 

• This is the small plastic card you insert into your phone to connect to a mobile network. 
• If you switch carriers or travel internationally, you’ll need to physically swap it out. 

eSIM: 

• Built directly into your device, so there’s no need to handle any physical card. 
• You can activate or switch mobile plans digitally, using an app, a QR code, or your provider’s website. 
• It can hold multiple network profiles at once, making it easy to switch between them whenever you need. 

Top 6 benefits of using an eSIM internationally

Whether you're heading to one country or hopping between several, an eSIM gives you the flexibility and freedom to stay connected without the usual travel headaches. Here's why it's a game-changer: 

1. Save money: Skip the pricey roaming fees and get local rates instead. 
2. Set it up in minutes: No need to visit a store, just activate your eSIM digitally, right from your phone. 
3. Pick a plan that fits your trip: Choose from single-country, regional, or global eSIM plans depending on where you're going. 
4. Switch plans easily: Traveling to more than one country? You can store multiple eSIM profiles and switch between them on the fly. 
5. Works across devices: Use it on compatible smartphones, smartwatches, tablets, and even some laptops. 
6. Keep your current number: With dual SIM functionality, you can use your regular number and a second line at the same time. 

How does an eSIM work for international travel?

1. Choose your eSIM provider

First, select an eSIM provider that supports your destination(s). T-Mobile, for example, offers plans tailored for specific countries, regions, or even global coverage.

Here are 5 important factors to keep in mind when choosing a provider: 

1. Check coverage: Make sure the provider covers all the countries you're visiting. 
2. Compare the details: Look at pricing, data limits, speeds, and how long the plan lasts. 
3. Go for easy setup: The best providers let you activate your eSIM quickly through an app, with no hassle. 
4. Look for solid support: Good customer service can make a big difference if you run into issues while abroad. Look for 24/7 coverage. 
5. Traveling to multiple countries? Some eSIMs offer regional or global plans, so you don’t have to switch between providers mid-trip. 

2. Purchase an eSIM plan

Once you’ve picked a provider, choose a plan that fits your trip, think about how long you’ll be gone, how much data you’ll need, and which countries you’ll be visiting. Most eSIM providers will send your digital SIM details instantly by email or straight through their app, so you can get connected right away. 

3. Download and install the eSIM profile

While this may vary, you’ll typically receive a QR code or activation instructions: 

• Open your device’s settings. 
• Navigate to the cellular/mobile settings. 
• Select "Add Cellular Plan" or "Add eSIM." 
• Scan the provided QR code, or enter the details manually if required. 

4. Activate the eSIM upon arrival (more on this below) 

It's best to install your eSIM before you leave -  then the eSIM will activate once you arrive at your destination. As soon as you land, your phone can automatically connect to a local network (some phones may require you to turn the SIM on manually), so you're online right away without racking up roaming fees. Pre-installing ensures a smoother setup experience. 

5. Use dual SIM capabilities 

One of the biggest advantages of using eSIM while traveling is dual SIM functionality. Así es como funciona: 

• Keep your regular number active: Your physical SIM stays connected, so you can still get calls and texts from home. 
• Use eSIM for local data: At the same time, your eSIM connects you to a local network, helping you avoid expensive roaming charges. 

Should I turn off my primary line when using eSIM? 

No. Simply disable data roaming on your primary SIM to avoid unwanted charges. Your phone allows you to set the eSIM as the default data connection, letting your primary line handle calls and texts as usual. 

How to activate and use an eSIM in 4 steps

1. Choose a provider: Remember to select one that offers coverage in your destination country or countries, and fits your other travel needs.  
2. Purchase a plan: Visit the provider's website or mobile app, then choose your eSIM plan based on the region, data limit, and duration of your travel. After you’re done, your provider will immediately deliver the digital eSIM details, usually via email or via their mobile app. Check out our helpful eSIM troubleshooting guides for both iPhone and Android devices. 
3. Download profile: Scan a provided QR code or manually enter details. 
   • For iPhone Users: 
     • Open Settings. 
     • Navigate to Cellular > Add Cellular Plan. 
     • Scan the provided QR code using your phone’s camera, or manually enter the activation code if prompted. 
     • Label your eSIM profile (e.g., "Europe Travel") for easy identification. 
   • For Android Users (instructions may vary slightly): 
     • Go to Settings. 
     • Select Network & Internet OR Connections > SIMs OR SIM Manager OR Mobile Network. 
     • Choose Add SIM OR Add eSIM. 
     • Scan the QR code or manually enter the details provided by your eSIM provider. 
4. Activate when you arrive: Switch on your eSIM after landing to connect instantly.  

Selecting the best eSIM plan for your travel needs

When picking an eSIM, it's important to match your plan to your trip and to know how much data you'll need. Aquí hay 4 cosas que debes tener en cuenta:

1. Visiting one country? Go for a plan made just for that destination, it’s usually more affordable. 
2. Traveling to several countries? Look for regional or global plans that cover all your stops without extra hassle. 
3. Planning on using a lot of data? Choose plans with plenty of data or even unlimited options so you don’t run out. 
4. Do you know your travel dates? Make sure your eSIM’s active period lines up with your travel dates for seamless coverage. 

Device compatibility: Can you use an eSIM?

Most newer smartphones support eSIM technology, as do some newer laptops, tablets, and smartwatches. So, how can you tell if your device is eSIM compatible? Here's a helpful chart:

*Always verify your device compatibility before purchase. 

5 frequently asked questions (FAQs) about international eSIM travel 

1. When should I install my eSIM before my trip? 
   Ideally, install before leaving home and activate upon arrival for convenience. 

2. Can I continue using my regular phone number with eSIM? 
   Yes, you can keep your primary SIM active for calls/texts and use your eSIM for data abroad. 

3. Is eSIM better than traditional roaming? 
   Typically, yes. eSIMs provide access to local network rates, avoiding costly roaming fees. 

4. Can my phone store multiple eSIMs? 
   Yes, modern smartphones can store multiple eSIM profiles, easily switched depending on your location. 

5. Do I need to remove my eSIM after traveling? 
   Not necessarily. You can disable or remove the profile via your phone’s settings once no longer needed. 

Ready to make international connectivity effortless? 

Explore T-Mobile’s eSIM solutions and experience travel the way it should be - connected, simple, and stress-free. Our coverage spans over 215 countries, meaning you’ll be connected almost anywhere you travel. Plus, you can activate your eSIM quickly and easily via the T-Life app, and get 24/7 customer support on the go.   

Echa un vistazo a nuestros planes y comprueba la compatibilidad de los dispositivos con la cobertura internacional aquí.  You can also check cruise coverage here. 

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• ¿Qué es una eSIM? 
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• Asistencia para tarjeta eSIM y SIM 
• Compra SIM integrada (eSIM) y tarjeta SIM física 
• Activa la protección para eSIM 

Fuentes: 

• ^{https://support.apple.com/en-us/118669} 
• ^{https://support.apple.com/en-us/119592} 
• ^{https://roamless.com/blog/esim-compatible-tablets} 
• ^{https://esim.holafly.com/how-to/smartwatches-compatible-esim/} 
• ^{https://www.samsung.com/us/support/answer/ANS10001619/} 
• ^{https://www.t-mobile.com/support/phones-tablets-devices}