Three Mobile Contact Number: 0333 338 1001

You can contact Three by calling their customer service number 0333 338 1001 if you are unable to dial 333 from your mobile phone and would like to discuss your bill payments, to top up your minute allowances or to ask about the cost of a pay as you go Sim deal.


Mobile Customer Services – 0333 338 1001

You should call Three on their customer service contact number 0333 338 1001 if you are unable to dial 333 from your mobile phone. Customers will be able to use this number to pay their monthly bill if they do not have a direct debit set up from their bank account. Alternatively, you can use the Three mobile customer service number to top up your minutes allowance if you are on a pay as you go contract. By the same token, you will be able to call Three to purchase additional roaming data if you unable to connect to the 4G service. You can also contact Three customer services to ask whether you are able to upgrade your handset to a newer model if you are approaching the end of your tariff. However, if you wish to leave your current mobile tariff early then you will have to pay a cancellation fee to upgrade.

You should phone the Three customer service number 0333 338 1001 to update your personal details, including your billing address, payment method or to ask how to manage your account with the Three mobile app. Alternatively, if you are on a Three Sim only contract, you may wish to ask the network how to use a PUK code to unblock your current mobile handset.


Call Costs and Contact Hours

Contact Numbers with a ’03’ prefix will charge callers the same standard per-minute rate as any local call made from a UK landline or mobile phone. However, callers can get in touch with the network provider for free if they have inclusive minutes in their mobile tariff or if their landline tariff is bundled with free calls to local numbers. You will be able to contact Three during their telephone opening hours, which are 8am-8pm Monday to Friday 9am-6pm Saturday and Sunday.


Three Phone Numbers

Three Department UK Phone Number
Mobile Customer Services 0333 338 1001
From a Three Handset 333
Mobile Broadband Enquiries 0333 338 1003


Write to Three Customer Services

If you would like to elevate a formal complaint following your dissatisfaction with your mobile tariff service or broadband network, then you can write to Three customer services, sending any correspondence to the following UK address: Three Customer Services, Hutchison 3G UK Ltd, PO Box 333, Glasgow, G2 9AG, United Kingdom.