100% Real Mobile Network • Not a VoIP App

A real UK mobile number for WhatsApp Business, banking and verification — on your existing phone

Get a genuine, non-VoIP UK mobile number that works for WhatsApp Business verification, bank 2FA, and SMS verification — delivered as an eSIM to your existing phone in minutes.

The Solution: A Real Business eSIM

SecondSim is not a "virtual number." It's a real, carrier-grade UK mobile number to separate work and life. See the difference.

Feature SecondSim Flaky VoIP Apps "DIY" PAYG SIMs
Number Type Real Mobile (non-VoIP) VoIP (Internet) Real Mobile
WhatsApp Verification ✓ Guaranteed ✗ Blocked (High Risk) ✓ Guaranteed
Bank & Stripe 2FA ✓ Guaranteed ✗ Blocked ✓ Guaranteed
E-Store (Shopify, Amazon) ✓ Guaranteed ✗ Blocked ✓ Guaranteed
Unlimited UK Calls ✓ Yes ✗ No ✓ (In Bundle)
Unlimited UK SMS ✓ Yes ✗ No ✓ (In Bundle)
Don't pay for data you're not using ✓ Yes ✗ No ✓ (In Bundle)
Number Deactivation Risk Zero (Active Subscription) High (Service shutdown) High (Must top-up)
Setup Process Instant (Automated Email) Instant (but risky) High Friction (ID checks)
Value Proposition Secure Identity & Comms Cheap & Disposable Bloated (Unneeded data)
100% Money-Back Guarantee

Simple, Transparent Pricing

One plan. Everything you need. No hidden fees.

Flex (Monthly)

Pay as you go, cancel anytime.

£5.99 / month
🔥 10% Off 5+ Lines
  • Real, Secure UK Mobile Number
  • Guaranteed WhatsApp & Bank Verification
  • Unlimited UK Calls & SMS (Receive SMS only when roaming outside UK)
  • Keep your private life private. A professional UK number for clients and verifications.
  • Low commitment, cancel anytime
Get Your Number
Save 11%

Quarterly

The balanced choice.

£15.99 / 3 mo
🔥 10% Off 5+ Lines
    • Real, Secure UK Mobile Number
    • Guaranteed WhatsApp & Bank Verification
    • Unlimited UK Calls & SMS (Receive SMS only when roaming outside UK)
    • Keep your private life private. A professional UK number for clients and verifications.
    • Save 11% & reduce admin
    Claim 11% Discount
Get 2 Months Free

Yearly

Long term peace of mind.

£59.99 / year
🔥 10% Off 5+ Lines
  • Real, Secure UK Mobile Number
  • Guaranteed WhatsApp & Bank Verification
  • Unlimited UK Calls & SMS (Receive SMS only when roaming outside UK)
  • Keep your private life private. A professional UK number for clients and verifications.
  • 2 Months FREE & peace of mind
Claim 2 Months Free

100% Money-Back Guarantee

If your new number fails to be verified by WhatsApp Business, Monzo, or your bank within 7 days, we'll refund you instantly. Zero risk.

Not sure if your phone supports eSIM? Check your device compatibility instantly →

Why people come to us

The reasons are more varied than you'd think. It's about taking control of your communication.

📵

Second UK number for WhatsApp Business

Sick of clients texting at 10pm? A dedicated business number means you can switch off without going off the grid entirely.

🔒

Non-VoIP number for bank and app verification

Want your business to feel less personal? Give clients a number that's yours, but not you.

💸

UK business number for your team

Got a team? Your employees can use their own phones with a SecondSim instead of handing out expensive company handsets and pricey contracts. Manage them centrally.

Real mobile number for SMS verification

For anyone using WhatsApp Business, banking apps, Stripe, or e-commerce platforms our numbers are real, non-VoIP, so they actually work where cheap virtual numbers get blocked.

Loved by Freelancers & Small Businesses

Real Stories: How teams and solo founders switch off

See how UK business owners separate their personal lives from client demands.

⭐⭐⭐⭐⭐

"SecondSim has been a gamechanger, running a salon meant that I used to have clients contacting me 24/7. There’s no more evening anxiety when my phone buzzes. I switch auto-reply on so that I can actually switch off of an evening."

CB

Caroline

Salon Owner

The Basement
⭐⭐⭐⭐⭐

"Being constantly available to everyone is really overwhelming. Before SecondSim I would get overwhelmed by WhatsApp. I turned off read receipts as I didn’t want clients to think messages were being ignored. For my clients I’ve framed it as a new priority number, a hotline where they don’t get lost."

GF

That Girl Friday

Business Support for Solopreneurs

Visit Site
⭐⭐⭐⭐⭐

"Super smooth and so simple - I'm able to juggle my personal and multiple side-gigs without carrying around a second phone or worrying about expensive contracts."

M

Mike

Founder

The Braai Guys
New Feature

Are you an agency or a team?

Stop reimbursing individual physical SIM receipts. Equip your entire workforce with digital UK business numbers instantly via our zero-touch admin dashboard. Centralized billing, zero hardware. Perfect for Consultants, Real Estate Agents, and Distributed Teams.

Explore SecondSim Team Management →

Welcome Back

Manage your team's eSIMs and billing.

My eSIMs Invoices
Primary SIM

073XX XXXXXX

Sarah Smith

eSIM STATUS:

INSTALLED
View QR Code
Send to Employee

Subscription

Monthly Flex

Active

Manage

073XX XXXXXX

James Clark

eSIM STATUS:

QR SENT

Frequently Asked Questions

Works Everywhere

Verified With The Platforms You Use

Real UK mobile numbers that pass verification on every major platform — unlike VoIP numbers that get blocked.

Resources

Setup Guides & Tutorials

Step-by-step guides to get your second business number running in minutes.

Stop Gambling With Your Business

Ditch the risk. Ditch the second phone. Get your secure, all-in-one business number in a few minutes.

About SecondSim: SecondSim is a UK-based telecommunications startup providing real, carrier-grade UK mobile numbers for small businesses, freelancers, and remote teams via instant eSIM delivery. Unlike virtual VoIP applications, SecondSim numbers operate on physical mobile network infrastructure, guaranteeing compatibility and seamless verification with platforms like WhatsApp Business, Monzo, Stripe, Revolut, eBay, Amazon, and PayPal. The platform includes a unified B2B administrative dashboard for assigning and managing digital SIMs to employees' existing smartphones, ensuring professional communication separation without the expense of physical hardware. Subscriptions feature unlimited UK calls and texts with no binding contracts.