Explainer
An eSIM is a digital SIM that loads a mobile carrier plan onto a compatible phone, often for data while travelling. A virtual number is a phone number used through an app or website, with no SIM involved. Pick an eSIM for mobile data; pick a number service for a second number on any device.
As of September 2026. Based on public information — see the sources at the end of this page.
Updated By PhoneBorn TeamEditorial policy
Side by side
| Feature | eSIM | Virtual number |
|---|---|---|
| What it is | A SIM embedded in the device, programmed with a carrier profile | A phone number delivered through software, not a SIM in your device |
| Device requirement | An eSIM-capable, usually unlocked phone, tablet or watch | Any device with a browser or the provider's app |
| Mobile data | Usually the main point, especially for travel eSIMs | None — uses your existing internet connection |
| Phone number | Only if the plan includes one; many travel eSIMs are data-only | Always — the number is the product |
| Line type in lookups | Mobile, when the plan has a number | Often VoIP; depends on the provider |
| Receives SMS codes | Yes, if the plan includes a number and the phone is on the network | Depends on the service and the line type |
| Where you use it | On the one device holding the profile | On any device where you can sign in |
| Identity checks | Carrier plans with numbers often require ID in many countries | Varies by provider |
| Number of lines | A phone can store several profiles; usually one or two active | As many numbers as you choose to buy |
| Best for | Mobile data and a local line on your own phone | A second number without a second SIM |
As of September 2026; features and prices change, so check each provider's current terms. Spotted an error? Email support@phoneborn.com — see our editorial policy.
Which to choose
People compare eSIMs and virtual numbers because both promise "a number without a new SIM card". But they work at different layers.
An eSIM is a format. It replaces the small plastic SIM card with a programmable chip inside the device (an eUICC). Instead of inserting a card, you scan a QR code or install a profile, and your phone joins that carrier's network. Most phones released since 2018 support eSIM, and a single phone can store many profiles, though usually only one or two are active at once. What you actually get depends on the plan on that profile — and many travel eSIM plans provide data only, with no phone number at all.
A virtual number is a service. The number lives with a provider, and you reach it through an app, a website or call forwarding. Nothing is installed on your SIM. Because most such services route traffic over the internet, their numbers are commonly classified as VoIP in carrier lookups.
For travel, an eSIM usually wins. It gives you local mobile data, often at lower cost than roaming, and a local number if the plan includes one. A number service does not provide any data.
For privacy, a separate number is usually simpler. You can give it to marketplaces, sign-ups and short-term contacts without touching your main line, and use it from any device. With a carrier eSIM, the line is tied to one phone and, in many countries, to your identity documents.
For verification codes, line type matters. Many apps check whether a number is mobile, landline or VoIP before sending a code, and some refuse VoIP. A carrier eSIM with a number is reported as mobile, but only works while the profile is active on your phone. Internet-based numbers are convenient but can be refused. That gap is exactly what non-VoIP numbers aim to fill.
Yes, and many people do. A common setup is a physical SIM or eSIM for your main line and mobile data, plus a separate number for sign-ups, work contacts or a second country. Your existing phone keeps doing what it does best, and the extra number stays reachable from any browser.
The main thing to avoid is putting an important account on a number you might lose — a travel eSIM that expires next week, or a free app number that is reclaimed when idle. If you will need codes again, choose a number you can keep. Our longer guide on eSIM vs a second number walks through more scenarios.
Our take
PhoneBorn sits between the two. Like a number service, it needs no SIM or eSIM slot — you use it from a browser dashboard on any device, or through the API. Unlike many internet-based numbers, PhoneBorn numbers are real mobile numbers, not VoIP, so carrier lookups report them as mobile. Plans run 1, 3, 6 or 12 months (From $1.80/month on the 12-month plan) and include SMS and calls both ways. Works with WhatsApp, Facebook, Google, Telegram, Instagram, TikTok and 110+ apps — and if it ever doesn't in the first 7 days, we replace it free. PhoneBorn does not provide mobile data — for that, an eSIM is the right tool.
FAQ
Sources
We run PhoneBorn, so we have an interest; we rely on public information, avoid quoting competitor prices and correct errors when told.
Keep reading
Real mobile numbers in 200 countries — From $1.80/month on the 12-month plan. Email-only sign-up, crypto payments, SMS and calls included.