Three app
- Go to the Account tab
- Then Account settings
- Tap Link another account or number and follow the on-screen instructions
Registering, logging in and managing your account
Whether you’re registering and adding your account for the first time, or returning to log in and link another number, learn how you can access My3 and the Three app to manage everything in one place.
In this article
What do I need before I register?
You’ll need your Three number and a valid email address to hand.
Any device which uses our mobile network has a Three number, including Home or Mobile Broadband hubs.
You can find it on your order confirmation, welcome emails, and bills. If you’re on Pay As You Go, you’ll find it in your welcome text.
Depending on your device, you can also find it in your phone settings, My3, the Three app, or the hub dashboard. For steps on where to locate it for your device, go to our Finding your number page.
How do I register for the first time?
Three App
- Open the Three app
- Enter your Three number
- Tap the Register tab
- Enter your email address
- Create and confirm a secure password
- Tap Register
- We’ll send a verification email to the address entered
- Tap Verify your email
My3
- Go to My3
- Tap the Register tab
- Enter your email address
- Create and confirm a secure password
- Tap Register
- We’ll send a verification email to the address entered
- Tap Verify your email
If you haven’t received your verification email, please check your junk or spam folder. If it’s not there either, please get in touch with us.
How do I add my account?
Once you’ve registered, you’re ready to add your account. Here’s how to add your account in My3 and the Three app for the first time:
- Log in using your email address and password
- Select your account type – personal or business
- Enter a Three number you’d like to add, and tap Continue
- We’ll send you a one-time passcode (OTP) by text
- Enter the OTP when prompted
- You’ll then see your account on your dashboard
Not received a text with your OTP?
Please check the mobile number shown on screen. If it’s correct, tap Resend OTP to retry.
If you’re still having trouble, go to the one-time passcode FAQ for more help.
How do I link another account or number?
If you’ve got more than one account or number with us, you can manage them all with one login. Here’s how to link another account or number on the Three app and My3:
Three App
- Log in to the Three app
- Go to the Account tab
- Tap Account settings
- Select Link another account or number
- Tap Continue to login
- Log into your account again, when prompted
- Select your account type – personal or business
- Enter a Three number you’d like to link, and tap Continue
- We’ll send you a one-time passcode (OTP) by text
- Go to the Account tab and tap Select account to see your new linked account
- Alternatively, open the subscription switcher on the Home tab to see any linked numbers
My3
- Log in to My3
- Go to the Account tab
- Tap Link now, under Link another account or number
- Select your account type – personal or business
- Enter a Three number you’d like to link, and tap Continue
- We’ll send you a one-time passcode (OTP) by text
- Go to the Home page and tap Change to see your new linked account
If you're the account owner, or an authorised contact, we'll also add any other numbers or services that show on the same bill.
Not received a text with your OTP?
Please check the mobile number shown on screen. If it’s correct, tap Resend OTP to retry.
If you’re still having trouble, go to the one-time passcode FAQ for more help.
Why haven’t I received a text with my one-time passcode?
If you’ve not received a text with your one-time passcode (OTP), here are some potential reasons why and how to fix them:
1. Unrecognised phone number
If your one-time passcode is directed to a different number, it’s possible that your current phone number isn’t linked to your registered email address.
To resolve this, you can either register again using a new email address or contact us and we’ll link your number for you.
2. Text sent to hub dashboard
If you’re using your SIM card in a Home or Mobile Broadband hub, your text will be sent to your hub dashboard instead of a phone.
To find out how to access the hub dashboard, look under this section on the Finding my number page. If you need support, you can also contact us.
3. SIM card not working
If your SIM card needs to be activated or replaced, please contact us to arrange this.
4. Can’t receive text
If you’re currently travelling abroad or experiencing network issues, you won’t be able to access your account or receive your OTP by text until it's resolved.
In the meantime, you can start a Live Chat for help.
FAQs
If your verification email hasn’t arrived, please check your junk or spam folder. If it’s not there either, please get in touch with us.
Please check the mobile number shown on screen. If it’s correct, tap Resend OTP to retry.
If you’re still having trouble, please contact us for more help.
My3
- Go to More actions
- Then select Link another account or number and follow the on-screen steps
No, you can’t use My3 or the Three app to link an account or number that’s already been registered. Please contact us instead.
No. For security reasons, you can only link accounts or numbers that are in the same name with a matching address.
No, linking your accounts simply lets you view them all using one set of login details. Doing this doesn’t affect your bills in any way – they’ll stay the same.
Yes, you can. Just follow the steps above for linking additional accounts or numbers.
Yes. The account holder can set this up for you using the Three app or by logging into their My3 account:
My3
- Go to More actions
- Tap Manage account user
- Then select Replace contact and follow the on-screen steps
Three app
- Go to the Account tab
- Tap Account settings
- Then go to Account users
- Tap Replace contact and follow the on-screen instructions
Once you’ve been added as a user by the account holder, you can register using the steps above.
If you’re a Sole Trader, you can link your business account to your personal account. If you’re having trouble doing this or are part of a larger business, please get in touch with our business care team.
If you have more than one number associated with your account, you can enter any of them to register. If you’re the account holder, you’ll see all numbers associated with your account using one set of login details.
If you’ve got Home Broadband with us, you can find your number in the Three app by tapping Broadband in the menu at the top of the screen when connected to your router.
For more detailed, device-specific information, including Mobile Broadband devices, check our device support pages.
Yes, if you’re the account holder, you can log into either the Three app or My3 and register them as an account user. This gives them view-only access to their account – perfect for keeping track of their usage, updating their personal details, or topping up if they’re on Pay As You Go.
Here’s how:
My3
- Go to More actions
- Tap Manage account user
- Then select Replace contact and follow the on-screen steps
Three app
- Go to the Account tab
- Tap Account settings
- Then go to Account users
- Tap Replace contact and follow the on-screen instructions
Once you’ve been added as a user by the account holder, you can register using the steps above.
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