How to get a second phone number without a second phone

Maybe you sell things online and you're tired of strangers texting your personal number. Maybe you freelance and want clients to stop calling at dinner. Maybe you've moved abroad and still need a number from home. Whatever the reason, the question is the same: how do you get a second phone number without carrying a second phone?

There are four realistic ways to do it in 2026. Each one solves the problem differently, and each one has trade-offs that are easy to miss. Here's an honest look at all four.

Why people want a second number

A phone number used to be something you gave to a handful of people. Today it's an identifier: it unlocks your messaging apps, recovers your accounts, appears in data leaks and ends up in marketing databases. Separating it from the rest of your life is simply good hygiene. The most common reasons we hear:

• Privacy — a number for forms, deliveries, loyalty cards and anyone you don't know yet.
• Work–life separation — a professional line you can switch off in the evening.
• Selling and renting — a number for listings that you can retire after the sale.
• Dating — chatting with matches without handing out your personal number.
• Living abroad — keeping a local number in the country you left, or the one you're moving to.

Option 1: a second physical SIM card

If your phone has two SIM slots, you can add a second line from any mobile carrier. It's a complete mobile line: calls, texts, data and emergency calls, all native to your phone.

The catch is everything around it. You need a dual-SIM phone, and in most European countries you'll go through an identity check to activate a SIM. You'll often wait for the card to arrive by post, sign up for another monthly plan, and — crucially — that second line only works on that one phone. You can't answer it from your laptop.

Option 2: a second line on an eSIM

Most recent phones support eSIM, a digital SIM you download instead of inserting. It removes the wait for the post, and many phones can hold several eSIMs at once.

Under the hood, though, an eSIM line is still a carrier contract: the same identity checks apply in most countries, the plan is tied to one device, and moving it to a new phone takes a few steps. It's a great option if you want a full second line on one phone and don't mind the paperwork.

Option 3: a second-number app

Apps like Onoff, Hushed or Burner give you an extra number inside a mobile app. Setup is quick and prices are lower than a carrier plan.

The trade-offs: the number lives in an app on one phone, web access is often limited or reserved for premium plans, and several apps ask for an ID document, a selfie or your existing phone number before you can use them. Some apps also hand out numbers that apps and websites recognise as internet (VoIP) numbers, which can be refused for verification codes.

Option 4: a number that lives in your browser

The newest option skips the app entirely. With a service like HeyNum, you get a real mobile number that you use in any web browser — on your laptop, your tablet or your phone, all in sync. There's nothing to install, and you can add it to your home screen if you'd like an icon.

Because it's web-based, it's also instant: you pick a country, pay with an email address and the number is live in seconds. HeyNum offers numbers in 19 countries, at the same price wherever you live.

The honest limits: browser calls need an internet connection (you can forward calls to another phone when you're offline), and like all internet-based services it can't call emergency numbers — keep a regular mobile line for that.

The four options side by side

Which one should you choose?

• Choose a second SIM or eSIM if you want a full second mobile line on one phone, including emergency calls, and you're fine with a contract.
• Choose an app if you only ever use your phone and the app offers what you need in your country.
• Choose a browser-based number if you want to use it on every device, need it right now, or prefer not to share ID documents.

Many people combine them: their main SIM for personal life and emergencies, and a browser-based number for everything else.

How to set up a browser-based number in a minute

1. Pick a country on the numbers page — the one your callers are in.
2. Choose monthly or yearly billing and check out with your email address.
3. Open HeyNum in your browser, allow the microphone the first time you call, and you're done.

That's it: no SIM card in the post, no app store, no identity check — and when you no longer need the number, you can cancel in one click.

Written by the HeyNum team. We build HeyNum, a service that gives you a real mobile number in your browser. We write about privacy, second numbers and staying reachable — and we're upfront when we mention our own product.