A real business number on your existing phone
Most business phone solutions make you choose: carry two phones, or hand clients your personal number. SecondSim is a third option. You get a genuine UK mobile number — not a VoIP line that apps block — active in minutes on your iPhone or Android. One phone. Two numbers. Total separation.
Who is it for?
Freelancers & consultants
Keep work calls separate without paying for a second device or contract. Switch off at 6pm by simply putting your work number on Do Not Disturb.
Small teams & remote workers
Each employee uses their own phone. You manage numbers centrally. No expensive handsets to buy, courier, or chase down when they leave.
Sellers & sole traders
Give buyers a number that's yours but not you. Perfect for Vinted, eBay, or giving out your digits without receiving personal texts at midnight.
The problem with most business numbers
Virtual "app-based" lines use VoIP (Voice over IP) technology. Because anyone can generate them instantly for fraud, platforms actively block them. SecondSim is radically different. We provide a non-VoIP, carrier-grade mobile network profile that lives directly on your phone's SIM hardware.
This guarantees it won't be blocked. You can securely activate a WhatsApp Business account, receive OTPs from Stripe, PayPal, Monzo and Barclays directly to your native messages app. Check if your current number is VoIP here.
Instant setup. No hardware required.
Choose a plan
Select a rolling monthly or annual plan starting from just £5.99/mo. No lengthy contracts or hidden fees.
Click the 1-click install link
We email your eSIM securely within seconds of payment. Go to Settings, scan the code, and your phone adds the second line.
Start calling
Make and receive calls natively. Looks, behaves, and verifies exactly like any other genuine UK mobile number.
No secondary handsets. No credit check. No ID restrictions.
One number, endless applications
WhatsApp Business
Register a separate WhatsApp Business account on the same phone. Respond to clients professionally without giving up your private identity.
Bank OTPs & Verifications
Need to set up a new bank account or platform? Use your second number to receive bank 2FA and OTP codes instantly and securely.
Instant Team Onboarding
Onboard new hires or remote staff on their first day. Manage multiple numbers across your organisation with SecondSim for Teams.
Marketplace Selling
Whether it's eBay, Gumtree, or Facebook Marketplace, hand out a fully functioning mobile number to strangers, then discard it when you're done.
Professional Services
If you're an estate agent, electrician, or beauty therapist giving out cards at quotes, ensure clients call your work profile, not your personal evening line.
Travelling the World
Keep your UK business number active when abroad to receive inbound texts and OTP codes globally. Perfect for expats and digital nomads.
A Professional eSIM for Business Verification
One plan. Everything you need. No hidden fees.
Flex (Monthly)
Pay as you go, cancel anytime.
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Real, Secure UK Mobile Number
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Guaranteed Bank & App Verification
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Unlimited UK Calls & SMS
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Low commitment, cancel anytime
Quarterly
The balanced choice.
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Real, Secure UK Mobile Number
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Guaranteed Bank & App Verification
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Unlimited UK Calls & SMS
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Save 11% & reduce admin
Yearly
Long term peace of mind.
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Real, Secure UK Mobile Number
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Guaranteed Bank & App Verification
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Unlimited UK Calls & SMS
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2 Months FREE & peace of mind
100% Money-Back Guarantee
Frequently Asked Questions
Can I have two phone numbers on one phone in the UK?
Yes, absolutely. Most modern iPhones and Android devices support dual SIM (or eSIM) technology. You simply scan our QR code to install a second profile, enabling you to use your existing personal line and your new business number side-by-side.
Is this a VoIP number or a real mobile number?
This is a real mobile number powered by a UK cellular network. It is strictly not VoIP. VoIP lines are heavily blocked by applications, but our carrier-grade guarantee ensures you do not get blocked by automated filters.
Will it work with WhatsApp Business?
Yes. Setting up a WhatsApp Business number is our most popular use case. Our mobile numbers receive the registration SMS or call perfectly the very first time.
Can I use it to receive bank verification codes?
Yes, it works flawlessly for bank 2FA and OTP verifications including Monzo, Starling, Revolut, Barclays, HSBC, and traditional merchants where VoIP drops messages.
Do I need a contract or credit check?
No. We value speed and access. You sign up, skip credit checks entirely, provide no ID, and agree to zero lengthy contracts. It is fully pay-as-you-go rolling.
How quickly can I activate it?
Instantly. Once you checkout, you will immediately receive a QR code in your inbox. Scanning it with your camera adds the profile, making you active within minutes.
What happens if I want to cancel?
Our systems are fully self-serve. You can log into your dashboard and cancel your monthly rolling subscription instantly with a single click. No hidden retentions team to speak to.
Can I give this number to employees?
Yes. Small and medium businesses love using SecondSim for employee numbers because it avoids hardware costs. Use our dashboards for teams to maintain central billing and oversight.
Does it work abroad?
Yes. You can receive inbound SMS messages and OTPs globally at no additional charge. For outbound roaming needs, see our digital nomad and expat guidance.
What's the difference between SecondSim and a VoIP app like Google Voice or Skype?
VoIP lines (like Skype and Google Voice) generate virtual numbers over the internet. Major financial platforms and WhatsApp actively detect and block these. SecondSim operates on actual cellular network bands, acting identically to physical SIM hardware issued by major telecom operators.
Get your business number today
Instant setup. No contract. Your real UK mobile number delivered directly to your inbox. Just £5.99/mo.
Get started from £5.99/mo