If you have ever searched for a way to get a phone number abroad or stay connected while travelling, you have probably come across two terms: virtual number and eSIM. Many first-time users confuse them or buy the wrong one. They actually solve different problems: one gives you internet, the other gives you a phone number. Sometimes, you need both.
What Is an eSIM?
An eSIM is a digital SIM built into your phone. Instead of inserting a physical card, you download a mobile plan directly onto your device using a QR code or an in-app installation.
With a Numero data eSIM, you get mobile data, internet access for browsing, navigation, and messaging, covering 190+ countries worldwide. The key distinction: a data eSIM provides internet connectivity, not a phone number. You cannot make traditional calls or send SMS with a data-only eSIM, though internet-based apps like WhatsApp work fine over the data connection.
What Is a Virtual Number?
A virtual phone number is a real telephone number that operates over the internet using VoIP technology, no physical SIM card required. With a Numero virtual number, you can make and receive calls, send and receive SMS, activate WhatsApp and Telegram, and receive OTPs and verification codes.
Virtual numbers are available from 80+ countries and over 4,000 cities. Pick the country, choose your number, and start using it, whether you are protecting your privacy with a second number or establishing business presence in another market.
Side-by-Side Comparison
This is not a comparison against other providers. These are both Numero products serving different needs:
| Feature | Data eSIM | Virtual Number |
|---|---|---|
| What it provides | Mobile internet (data) | Phone number (calls + SMS) |
| Requires eSIM-compatible device | Yes | No, works on any smartphone with internet |
| Installed via | QR code or in-app install | Purchase in Numero app or website |
| Country coverage | 190+ countries | 80+ countries, 4,000+ cities |
| Makes phone calls | No (internet calling apps only) | Yes, real VoIP calls to any number |
| Receives SMS/OTP | No | Yes |
| WhatsApp activation | No | Yes (on compatible numbers) |
| Best for | Travellers needing internet abroad | Users needing a phone number for calls, verification, or privacy |
When You Need an eSIM
Choose an eSIM when your primary need is mobile data: travelling internationally for maps and messaging, avoiding roaming charges, short trips where buying a local SIM wastes time, or multi-country itineraries, a single regional plan can cover destinations like the 2026 FIFA World Cup across North America or France.
When You Need a Virtual Number
A virtual number fits when the need is communication, identity, or privacy: activating WhatsApp or Telegram, making affordable international calls (also useful from Kenya), keeping your personal number off online listings, or establishing a local business presence with a US or UK number.
When You Need Both – The Full eSIM
Some users genuinely need data and a phone number, and Numero makes it easy because both live in one app.
Example: You are travelling to Spain for two weeks. You need mobile data for maps and social media, but you also want a local number for restaurant reservations. You could get a data eSIM plus a virtual number separately, or choose a Numero Full eSIM, which combines data and a real phone number in a single eSIM profile.
The Full eSIM includes a real phone number, voice calling, and mobile data, all from one eSIM, available in 78+ countries. It suits travellers and professionals who want everything unified. Setup follows the same process as a data eSIM: purchase in the Numero app, install via QR code, and activate. If your Samsung Galaxy S25 supports eSIM, it supports Full eSIM.
Not every situation requires both products, though. A weekend traveller who just needs maps and messaging can get by with a data eSIM alone. A freelancer who only needs a US number for client calls does not need an eSIM. Match the product to the problem.
Frequently Asked Questions
Can I use a virtual number without an eSIM?
Yes. A virtual number works on any smartphone with an internet connection, Wi-Fi or mobile data from your existing SIM. No eSIM required.
Can I use an eSIM without a virtual number?
Absolutely. A data eSIM only provides internet access. You do not need a virtual number to use it, though you will miss out on traditional calling and SMS.
Which option is cheaper?
It depends on your use case. A data eSIM is often the most affordable option for travellers who just need internet. A virtual number is cost-effective for ongoing calling and messaging. The Full eSIM combines both, which may save money compared to purchasing each separately.
Can I have multiple virtual numbers from different countries?
Yes. There is no limit, you can hold virtual numbers from different countries simultaneously and manage them all in the Numero app.
Conclusion
Virtual numbers and eSIMs are not competing products, they serve different purposes. An eSIM keeps you connected to the internet; a virtual number gives you a phone line. Numero puts both under one roof, along with calling plans and the Full eSIM hybrid. Identify what you need, pick the right product, and you are set.
