Unlock Seamless Connectivity | Your FAQ Guide to eSIMs for Travel

As a frequent business traveller, digital nomad, or first-time tourist, staying connected is essential abroad. From using Google Maps in Tokyo to jumping on a Zoom call in Berlin, your phone is your lifeline. You can do without the stress of SIM swaps, surprise roaming charges, and unreliable public Wi-Fi, which are frustrating and cramp your travel style.

Enter the eSIM—a game-changing technology that simplifies how you connect while traveling. If you are curious, confused, or ready to make the switch, this blog answers all your key questions and points you to the best eSIM for international travel.

#1 What is an eSIM and how does it work?

An eSIM (short for embedded SIM) is a tiny chip built into your smartphone, tablet, or laptop that replaces the need for a physical SIM card.

Instead of inserting a card, you download a digital profile from your provider, like KnowRoaming, and connect instantly to a mobile network.

Here’s how it works in 4 easy steps:

1. Choose your package: Select the right plan for your destination from a range of flexible, affordable options.
2. Scan the code: After purchase, you’ll get a QR code. Scan it with your phone or tablet.
3. Switch to eSIM: On landing, set the eSIM as your primary data connection.
4. Connect to network: Enable roaming and you’re good to go—with 24/7/365 support from KnowRoaming if you need it.

It’s effortless global connectivity with the best eSIM for international travel, without the hassle.

#2 How can I activate my eSIM?

Activating your eSIM for international travel is as easy as scanning a QR code.

After purchasing your plan from KnowRoaming, you’ll receive a unique QR code via email or through your account.

Go to your device’s mobile network settings, select “Add eSIM,” scan the code, and the profile will be installed.

No tech skills required. No physical card to fiddle with.

#3 How do I top up my eSIM?

What if you run out of data? No problem. With KnowRoaming, you can top up instantly from anywhere in the world.

Just log into your account via the website or app, select your eSIM profile, and choose a new data plan.

Payment is quick, and your new data activates within minutes. It’s ideal for those moments when you need Google Maps to find the nearest coffee shop in a new city.

#4 What does an unlimited data eSIM plan mean?

An unlimited data plan gives you the freedom to stream, browse, and video call without worrying about running out of data.

However, it’s worth noting that “unlimited” may come with a fair use policy—after a certain amount of high-speed data, speeds may be throttled to prevent misuse. But it’s ideal for heavy data users who want seamless connectivity while travelling for work or leisure.

Check out KnowRoaming’s unlimited global data plans tailored to your travel duration.

#5 What devices are compatible with an international eSIM?

Not all devices support eSIM, so it's important to check before purchasing a plan.

Most modern smartphones, including iPhone XS and newer, Google Pixel 3 and up, and Samsung Galaxy S20 and newer, support eSIM functionality. Some tablets and laptops also offer compatibility.

Check your device settings under Mobile or Cellular Settings. If you see an “Add eSIM” or “Add Mobile Plan” option, your device is likely eSIM-ready.

Check out KnowRoaming’s list of eSIM-compatible devices here.

#6 Do I keep my phone number on an eSIM?

Yes—and this is one of the best parts!

You can keep your physical SIM card (with your regular number) in your device and run the eSIM for data only. That means you can still receive calls and texts on your main number while using your KnowRoaming eSIM to access local or international data.

This dual-SIM functionality is ideal for business travellers and anyone who wants to stay accessible while avoiding high roaming charges.

#7 Is there an eSIM that works globally?

Yes! KnowRoaming offers global eSIM plans across multiple countries and regions.

So if your itinerary includes hopping from Paris to Prague to Phuket, you don’t need to buy a different SIM card for each country. With KnowRoaming, you can switch borders without switching SIMs.

This is the best solution for international business trips, long-term backpacking adventures, or whirlwind world tours.

#8 Which is the best eSIM to use internationally?

The best eSIM for international travel balances speed, affordability, coverage, and ease of use—and KnowRoaming ticks all those boxes.

With access to over 800 networks globally, KnowRoaming ensures you get the best local signal wherever you are.

Here are 5 more reasons why KnowRoaming is raking in glowing reviews:

• Effortless Setup in Minutes No store visits, no physical SIM cards. Just pick your plan, scan the QR code, and connect. It’s tech made travel-friendly.
• Pocket-Friendly Plans Without Roaming FeesTransparent pricing and competitive rates mean you get excellent connectivity without breaking your travel budget.
• Global Coverage That Follows YouAccess top-tier service in 200+ countries and regions. With one eSIM for international travel, say goodbye to country-specific plans and hello to seamless travel.
• 24/7/365 Support From Real HumansWhether you’re lost in London or stuck in São Paulo, help is always a message away. KnowRoaming’s support team is available around the clock.
• Eco-Friendly and SecureNo plastic, no waste. Plus, built-in security features make eSIMs safer than public Wi-Fi or traditional SIMs, protecting your data and your peace of mind.

Say Hello to the World, Not to Roaming Charges

As a traveller who values time, money, and peace of mind, the future of international connectivity lies in eSIMs. And if you're looking for the best eSIM for international travel, KnowRoaming is your passport to a worry-free digital experience.

Easy to install. Reliable across borders. Always there when you need it.

Ready to ditch roaming fees and stay connected wherever you land?Explore KnowRoaming’s international eSIM plans today and unlock seamless travel, one tap at a time.