Find the cheapest eSIM and mobile recharge providers

When it comes to making international phone calls, a lot of the solutions we recommend to avoid high roaming fees are internet-based solutions. Whether you're using a service like Rebtel or KeepCalling (which connect your call via local phone networks) or opting for VOIP apps like WhatsApp, Messenger, FaceTime, or Viber.

But here’s the catch: these calling apps use data, and sometimes a lot of it. For instance:

• A typical voice call over WhatsApp or Messenger uses about 0.3 to 0.5 MB per minute
• Video calls can eat up much more—up to 5 MB per minute
• A one-hour video call can easily use 300 MB or more

That’s not a problem if you’re connected to Wi-Fi or have a mobile plan with plenty of data, but things change when you’re traveling abroad—which is often when international calls matter most. Whether you're calling home while overseas or staying in touch with loved ones back in your home country, you need a reliable and affordable internet connection.

Enter the eSIM: A Smarter Way to Stay Connected Abroad

An eSIM is a digital SIM that allows you to activate a mobile data plan without having to insert a physical SIM card. It’s especially handy when traveling, as you can:

• Get online instantly, no matter where you land
• Avoid expensive roaming charges
• Keep your primary SIM active (useful for receiving SMS or calls)

Some of the most popular eSIM providers include:

• Airalo: Offers regional and global plans with affordable rates
• Holafly: Great for unlimited data plans in many countries

But What About the Person You’re Calling?

There’s another side to international calls that’s often overlooked: the person you're calling also needs data if you're using a VOIP app (like Facetime, Whatsapp or Messenger).

In many countries, unlimited data plans aren’t common, and people often rely on prepaid mobile data bundles. If your loved ones don’t have enough data to answer your WhatsApp or FaceTime call, the best solution might be to send them a mobile recharge (also called a top-up).

Services like:

• Rebtel
• Ding
• MobileRecharge

… let you top up mobile credit or data to numbers in over 150 countries. It’s fast, easy, and a great way to make sure your family or friends are never out of data when you want to connect.