How to use an eSIM to make calls, send texts, use iMessage and FaceTime while traveling? (2025 Guide)

The majority of travelers who install an eSIM to go to Europe, the United States, Mexico, or Asia ask the same question: "Will I be able to make calls and send text messages?" Good news: yes, absolutely — but you need to understand how eSIMs work.

In this guide, you will understand which features depend on your Canadian number, which ones go through the Internet, how to set up your iPhone or Samsung, and how to avoid roaming charges.

1. Why are calls and SMS messages confusing with an eSIM?

A travel eSIM, like those offered by VoyageSIM , is designed to give you internet access worldwide at a low cost. However, most eSIMs on the market are data-only plans .

• No regular cell phone calls
• No standard cellular SMS messages
• Use of Internet applications (WhatsApp, FaceTime, etc.)

And that's perfect for 95% of travellers — because EVERYTHING already goes through the Internet today.

2. Two types of eSIM: data only vs. voice + SMS

Here's what you need to know:

➡️ 1. eSIM data only (VoyageSIM, Airalo, Holafly…)

• Cheaper
• Ultra-fast connection
• Wi-Fi calling and messaging apps work perfectly
• Most popular among travelers

➡️ 2. eSIM with calls/SMS (less common)

• Very high price
• Often unnecessary
• Useful only for long-term trips with a local number

VoyageSIM offers data-only plans because they are more secure, more economical, and work with all modern applications.

3. Can you make calls with a data-only eSIM?

4. Does iMessage work with an eSIM?

✔ Yes . iMessage uses the internet. Your Canadian number remains linked to iMessage, even if your eSIM is active.

SO :

• Blue iMessage → works everywhere
• Green SMS → see next section

5. Do SMS messages work with an eSIM?

SMS messages (green) do NOT go through the eSIM. They go through your Canadian number / physical SIM .

So :

• Internet = eSIM TravelSIM
• SMS = your Canadian number
• Calls = Internet applications or Wi-Fi calling

6. How do I configure my device to avoid charges?

🔵 iPhone (iOS)

Go to:

• Settings → Cellular Data
• Canadian SIM → Data: disabled
• eSIM TravelSIM → Data enabled

Result :

• Zero roaming charges
• SMS via your Canadian number
• Internet via your VoyageSIM eSIM

🟢 Android / Samsung

Settings → Connections → SIM management

• Canadian SIM: Data disabled
• eSIM TravelSIM: Data enabled
• Enable Wi-Fi Calling if your carrier allows it.

7. Wi-Fi Calling: The Magic Feature for Travelers

If your Canadian carrier offers Wi-Fi calling (Bell, Virgin, Telus, Videotron, Fizz…), you can:

• Call Canada for free from any country
• Receive your calls normally
• Keep your number free of charge

Thanks to your VoyageSIM Internet, Wi-Fi calls become unlimited even abroad.

8. Concrete example: Traveling with an eSIM in Europe

Let's take the example of Eric, who is travelling in Europe with an iPhone:

• He keeps his Bell SIM active
• He installs the VoyageSIM eSIM
• He disables data on Bell to avoid charges
• It activates data on VoyageSIM

Result :

• Super fast internet via VoyageSIM
• Bell SMS received normally
• iMessage works perfectly
• WhatsApp/FaceTime audio works
• Free Wi-Fi calling to Canada

9. Conclusion: The best way to use an eSIM while traveling

The perfect combination for travelers:

• eSIM TravelSIM → Reliable global internet
• Your Canadian SIM → receive SMS / number

You keep your Canadian number, avoid all roaming charges and use all your communication applications without any problems.