Best SIM Card for Calling Abroad in 2025

Whether you’re on a business trip, a family vacation, or exploring the world as a digital nomad — staying connected while traveling is essential. But what’s the best SIM card for calling abroad in 2025?

With dozens of options available, most people settle for roaming plans, local SIMs, or eSIM data packs — and still end up juggling between numbers, apps, and expensive fees.

Let’s explore the most popular international SIM options — and the one solution that finally puts an end to the hassle.

Popular SIM Cards for Calling Abroad

1. Vodafone International SIM
Vodafone offers international add-ons and roaming bundles. It’s a strong, well-known network, but charges can quickly add up, especially for voice calls outside of Europe.
More on Vodafone roaming

2. Three Pay As You Go SIM
Three’s “Go Roam” covers many destinations, and their prepaid SIMs are relatively affordable. However, service can be inconsistent, and countries outside the Go Roam zone come with high call charges.

3. Lebara Mobile
Lebara focuses on cheap international calling. If you’re calling one specific country often, it can be great. But for frequent travelers who change locations — it’s less practical.

4. Airalo eSIM
Airalo offers excellent eSIM data in over 200 countries — perfect for internet browsing and apps. But: no real phone number, no voice calls, and no access to your UK number for calls or SMS.
Visit Airalo

The Problem With Most SIM Options

Each option solves part of the problem:

• Local SIMs give you cheap rates — but disconnect your UK number

• Travel eSIMs give you data — but no access to SMS, banking codes, or UK calls

• UK roaming plans keep your number — but come with high daily fees and limits

So what’s the best SIM card for calling abroad in 2025 — without compromise?

Why Keep My Number Is the Best SIM Card for Calling Abroad in 2025

Keep My Number is a unique travel solution that solves all of the above — in one app.

• 📞 Receive calls to your UK number while you travel

• ☎️ Make calls from your original number — no caller ID issues

• 🌍 Get global data via an affordable travel eSIM

• 🔁 No SIM swaps, no contracts, no roaming surprises

And yes — even those SMS codes from your bank or WhatsApp still work.

Related: How to Avoid Roaming Charges Abroad

✈️ Final Thoughts: One SIM to Rule Them All

In 2025, staying connected abroad doesn’t have to mean juggling SIM cards, missing important calls, or paying ridiculous roaming charges.

Most SIM cards do one thing well.
Keep My Number does it all — keeping you reachable on your UK number, giving you data, and letting you travel with confidence.

Try Keep My Number today — and stay connected, no matter where life takes you.