Featured Guide

How to Have Two Numbers on One Phone with eSIM

Learn how to ditch the heavy second handset and seamlessly run two active phone numbers on a single smartphone to expertly handle WhatsApp Business and personal calls.

Get your 2nd number now

For years, separating your personal contacts from your business clients meant you had to buy a chunky second mobile device. Today, thanks to eSIM technology, having two numbers on one phone is easier than ever.

If you have a modern smartphone like an iPhone (XR or newer) or a Samsung Galaxy/Google Pixel, your phone natively supports dual-SIM capability through a digital "eSIM". This allows you to set up WhatsApp Business effortlessly and answer clients confidently without ever giving out your personal mobile number.

1

Activate Your eSIM

To acquire your second number, you don't need to wait for a plastic SIM card to arrive in the post. By purchasing an eSIM plan from SecondSIM, you will instantly receive a QR code via email.

  • On iPhone: Navigate to Settings > Cellular (or Mobile Service) > Add eSIM. Scan your QR code.
  • On Android: Go to Settings > Connections > SIM Manager > Add eSIM. Scan your QR code.

Once active, both your primary physical SIM and your new digital eSIM will be connected simultaneously to the network grids. You now officially have two numbers on one phone!

2

How to Set Up WhatsApp Business

To isolate your work messages on the same phone, you will utilize the official WhatsApp Business app. It is a completely free, standalone application built by Meta that safely coexists next to your standard personal WhatsApp.

  1. Search for "WhatsApp Business" in the Apple App Store or Google Play Store and download it.
  2. Open the app. It will detect your personal primary number and ask if you want to use it. Select "Use a different number".
  3. Input the new UK Mobile phone number (+44) assigned to your SecondSIM eSIM.
3

Verify Your Number

Because your SecondSIM line is an active, Tier-1 cellular profile rather than an unreliable VoIP app, your device can natively accept texts and phone calls.

  • WhatsApp will dispatch a 6-digit SMS verification code straight to your new line.
  • Open your phone's default Messages app to retrieve the code, and enter it into the WhatsApp Business verification screen.
  • Finalize your professional profile by uploading your logo, business working hours, and customized out-of-office automated replies.

You now have two phone numbers running perfectly on one phone!