Registration and log in

Go to 'Register'. A new tab will open, so you can keep referring back to the process here.

Please note: you’ll need to wait 24 hours after joining Three Business before you’re able to complete registration.

Select the option ‘Business account owner’.

You can find your Business Account Number (sometimes known as a Customer Account Number) in the attachment to the email we sent you after you ordered. The email subject line will be ‘Your Three Business account details'. Or find your Business Account Number in the 'Welcome to Three Business’ email that we sent you.

Here’s how the email you need should look.

Here are the details you'll need:

- Business Account Number (also called Customer Account Number) 
- The email address you gave us when you placed your order

Create and confirm a password. This will need to contain 12 characters or more, and can contain special characters.

Then, select ‘Register’.

We’ll email you a link you can use to verify your account. You'll need to do this within 24 hours of receiving the email.

Once you’ve registered you can track your balance, review bills, choose Add-ons, manage your Spend Cap, add lines and more.

Go to 'Register'. A new tab will open, so you can keep referring back to the process here.

Select the option ‘Personal account or business employee’.

Fill in the details as below:

- Your Three Business mobile number
- Your email address

Create and confirm a password. This will need to contain 12 characters or more, and can contain special characters.

Then, select ‘Register’.

We’ll email you a link you can use to verify your account. You'll need to do this within 24 hours of receiving the email.

Log in from here, or go to ‘Login / register’ at the top of any Three Business page. A new tab will open, so you can keep referring back to this guide.

Enter the email address and password you registered with, then select ‘Log in’.

Your password will be 12 characters or more, and may have contained special characters.