Three Customer Service Number

If you need help with your Three mobile account, device or plan then use the below free contact numbers for customer care, sales & upgrades.

Three Customer Service Number:
0333 300 3333 or 333 from your Three SIM.

0800 033 8002

3 mobile customer service is able to help with all your queries by dealing 0333 300 333 from your landline or 333 from your three phone. If you are looking to get help with 3 mobile broadband then you can dial 0333 300 0500.

Three Support
Three have a wide range of predefined questions & answers to help you get started with your 3 SIM or device, you can find a wide range of information here:

Unlock Three Phone
To unlock your 3 Phone use the below form:

Three Complaints
Making a complaint to Three is easy, you can fill in their online complaint form using this link:

Alternatively, if you prefer you can make your complaint in writing to the address below:

  • Three Customer Complaints
    Hutchison 3G UK Ltd.
    PO Box 333
    G2 9AG
  • For Three Business customers:
    Three Business Services
    PO Box 333
    G2 9AG

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