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Three Voicemail Number: Dial 123 to Listen to Messages

Mobile phone displaying voicemail notification on the Three network

Three Voicemail Number: Dial 123 to Listen to Messages

The Three voicemail number is 123. Simply dial it from your Three mobile to access your voicemail inbox, listen to messages, and manage your recordings. It's free to call 123 from your Three handset, and it works on all Three pay monthly and pay-as-you-go plans.

This quick-reference guide covers everything you need to know about the Three voicemail number, including how to set up your PIN, check messages when you're away from your phone, and turn off voicemail entirely. For a more detailed walkthrough, see our comprehensive guide to Three voicemail.

How to Call Three Voicemail

Accessing your voicemail on Three couldn't be simpler:

  1. Open your phone's dialler.
  2. Dial 123 and press call.
  3. Follow the automated prompts to listen to your messages.

When you hear a new message, you'll typically be given options to replay it, save it, or delete it. The exact menu options may vary slightly depending on your device, but the voice prompts will guide you through each step.

Alternative Ways to Access Voicemail

Most smartphones also let you access Three voicemail by pressing and holding the 1 key on your dialler. This speed-dial shortcut is pre-configured on the majority of handsets connected to the Three network and calls the same 123 number behind the scenes.

On many Android devices, you may also see a visual voicemail app that lets you view a list of messages and play them back without dialling in at all. If this feature is available on your plan and handset, it can be a much quicker way to manage high volumes of voicemail.

How to Set Up Your Three Voicemail PIN

Three prompts you to create a voicemail PIN the first time you dial 123. If you skipped this step or need to reset it, follow these instructions:

  1. Dial 123 from your Three mobile.
  2. Once connected, navigate to the mailbox settings menu (usually option 3 or 4, depending on the prompts).
  3. Select the option to change your PIN.
  4. Enter a new four-digit PIN and confirm it when prompted.

Choose a PIN that's easy for you to remember but difficult for others to guess — avoid simple sequences like 1234 or 0000. Your PIN is essential for checking voicemail remotely, so keep it secure.

How to Check Three Voicemail Remotely

If you're away from your Three handset — perhaps it's lost, out of battery, or you're using a different phone — you can still retrieve your messages:

  1. From any phone (landline or mobile), dial your Three mobile number.
  2. Wait for the call to go to voicemail.
  3. While the greeting plays, press the * (star) key.
  4. Enter your voicemail PIN when prompted.
  5. You'll then have access to your messages as normal.

Note that if you haven't set up a PIN, remote access won't work. This is another good reason to configure your PIN as soon as possible. If you're calling from abroad, standard international call charges may apply — check your plan details or speak to your provider.

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How to Turn Off Voicemail on Three

Some business users prefer to disable voicemail altogether — for example, if you'd rather missed calls simply ring out or redirect to another number. To turn off voicemail on Three:

  1. Open your dialler and enter ##002#.
  2. Press call.
  3. You should see a confirmation message on screen indicating that all call diverts have been cancelled.

This deactivates voicemail by removing the call forwarding rules that send unanswered calls to the 123 service. If you change your mind later, you can reactivate voicemail by dialling 1210 from your Three handset.

Other Useful Three Voicemail Divert Codes

Code Function
1210 Turn voicemail back on
##002# Cancel all call diverts (turns off voicemail)
123 Call voicemail to listen to messages

For a full breakdown of voicemail settings, greeting customisation, and troubleshooting tips, visit our in-depth Three voicemail guide.

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Frequently Asked Questions

What is the Three voicemail number?

The Three voicemail number is 123. Dial it from your Three mobile to listen to messages, change your settings, and manage your voicemail inbox. It's free to call from your Three handset.

Is it free to call 123 on Three?

Yes, calling 123 from your Three mobile is completely free. However, if you're checking voicemail remotely by calling your own number from another phone, standard call charges from that phone may apply.

How do I check Three voicemail from another phone?

Call your Three mobile number from any phone, wait for the voicemail greeting to begin, then press the * (star) key and enter your voicemail PIN. You'll need to have set up a PIN beforehand for this to work.

How do I turn off voicemail on Three?

Dial ##002# from your Three mobile and press call. This cancels all call diverts and disables voicemail. To turn it back on later, dial 1210.

Can I change my Three voicemail greeting?

Yes. Dial 123, then navigate to the mailbox settings menu and select the option to record a personal greeting. This is particularly useful for business users who want a professional message for callers. See our full Three voicemail guide for step-by-step instructions.

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