Virtual number
A virtual number is a phone number provided by an app or an online service, with no SIM card attached: calls and texts travel over the internet. It sits alongside your normal mobile line, for a few euros a month, and can carry another country's dialling code. Not to be confused with the eSIM, which is a real mobile line on local networks.
Why it matters when travelling
The real use case: getting a local number for services in the country you visit (classified ads, bookings, delivery apps demanding a national code), without buying a local SIM. Paired with a data-only eSIM providing the connection, the virtual number fills the one gap pure data leaves: being callable on a number from the country.
Its big limit: identity verification. Banks, and more and more platforms, detect and refuse virtual numbers for confirmation texts. Your home number, received through dual SIM, remains the only safe bet for sensitive codes.
The misconception
“A virtual number replaces my mobile line abroad.”
It does not: it depends on an internet connection (provided by your eSIM or by wifi) and is not a mobile line in network terms. No data, no virtual number. And for the uses that matter (banking, government), it is your real line that counts.
What it changes when you compare
If an “eSIM with a number” offer appeals to you, look at what sits behind it: a real mobile number attached to the line (rare and pricier), or an app-based virtual number bundled with a data eSIM (the common case). The second is often cheaper bought separately: compare the two totals.
Compare eSIM plans by destinationThe rat's tip: Before paying for a virtual number “to get texts abroad”, test the real question: your home texts already arrive free in roaming, with data switched off. The virtual number only helps if you need a LOCAL number from the country you visit. That is rarer than people think.
See also
Frequently asked questions
What is the difference between a virtual number and an eSIM?
The eSIM is a real mobile line: it connects to local masts and provides data. The virtual number is a software service: a number reachable over the internet, with no network of its own. One connects you, the other makes you reachable; they combine rather than replace each other.
Do virtual numbers work for bank verification?
Less and less: banks identify virtual number ranges and refuse them for security texts. Keep your home mobile line active while travelling for banking codes; that is the reliable setup.
Is a virtual number anonymous?
No: serious providers require identity and regulation is tightening. The virtual number is a convenience tool (local number, work/personal separation), not an anonymity tool.