Three (3) Store Customer Service Number — Complete Expert Guide

Executive summary and quick contacts

Three (branded “3”) is a major mobile network operator in the UK and other markets; in the UK it launched in March 2003 and introduced 5G services from 2019. The quickest ways to reach Three customer service for store-related issues are the network short-code from a Three handset and the national customer line. These are the primary contact routes you should use before visiting a store to avoid wasted journeys.

Key contacts (useful as of 2024): dial 333 from any Three mobile (free), or call Three UK’s customer support from other UK phones on 0333 338 1001. For store addresses, opening times and direct store phone numbers, use Three’s official store locator at https://www.three.co.uk/support/contact_us or the My3 app (iOS / Android).

How to use the phone numbers and what each line covers

Dial 333 from a Three phone when you need account support, a SIM swap, tariff changes, billing queries or to book an in-store appointment. The 333 short-code routes directly to Three’s customer operations and is typically free of charge when called from a Three SIM. Expect automated menu prompts followed by an option to speak to an adviser for store-related matters.

If you are calling from a non-Three number, use 0333 338 1001. This number is the general customer care line for Three UK and handles the same scope of enquiries as 333 (account/billing/technical/store appointments). Outside business hours there will be recorded guidance; peak busy-times can mean waits of 10–30 minutes, so call early morning or late evening for shorter queues.

Visiting a Three store: procedure, what to bring and what to expect

Before you visit, confirm the store’s address, direct telephone and opening hours on the store locator page to avoid closures or non-service days. Many high-traffic Three stores operate Monday–Saturday 10:00–18:00 and Sunday 11:00–17:00, but exact times vary by location and by retail centre. Booking an appointment by phone or via the My3 app can reduce waiting time.

When you go in, bring: proof of ID (passport or UK driving licence), the account holder’s name and billing address, and either the handset or SIM you are querying. For device repairs bring the device, purchase receipt or order number, and any protective case/accessories only if requested. In-store staff can do immediate SIM swaps or account verifications but hardware repairs are often logged and sent to a repair centre (see repair turnaround below).

Checklist — documents and details to take to a Three store

• Photo ID: passport or UK driving licence; mandatory for contract changes or upgrades.
• Proof of address: recent utility bill or bank statement if you are changing billing details.
• Account reference or phone number: 11–12 digit billing/account number (found in My3 or on paper bills).
• Device and accessories for repairs: the handset, charger/cable if the fault relates to charging, and the original box/receipt if available.
• Payment method: debit/credit card or proof of online purchase if returning or exchanging a device.

Billing, returns, repairs and unlocking policy (practical details)

Returns: For online purchases Three UK follows UK consumer distance-sales rules — a 14‑day cooling-off period applies to most online orders (beginning the day after delivery). In-store purchases are subject to the store’s returns policy; always check your receipt. Faulty goods are covered under manufacturer warranties (commonly 12–24 months) and UK statutory rights (e.g., short-term right to reject under the Consumer Rights Act 2015).

Repairs: If a device fault is not solvable in-store, Three will log a repair and typically use an external repair centre. Typical repair turnarounds are 7–14 working days for common faults; longer times (up to 28 days) can apply for parts or out-of-warranty requests. Ask for a repair reference number and a loan device policy if you require continuity of service.

Unlocking: Network-locked handsets can normally be unlocked once any contractual conditions are met. Three offers unlocking after the cooling-off or minimum lock period; methods include an unlock code emailed to you or a remote unlock via customer support. For precise eligibility (e.g., outstanding balances or minimum term), contact 333 or ask in-store before attempting third-party unlocks.

Online support routes and complaint escalation

Before an in-person visit you can often resolve issues more quickly online: log into My3 (app or web) for billing breakdowns, data usage, plan changes, and to raise a repair or complaint. The website’s support area at https://www.three.co.uk/support has live chat (where available), troubleshooting guides and the store locator with direct store phone numbers and opening hours for every UK outlet.

For unresolved complaints escalate via Three’s formal complaints process: raise the issue with customer care (333 / 0333 338 1001), request a formal complaint reference, and if not satisfied ask for the Executive Customer Relations stage. If final resolution is unsatisfactory after 8 weeks or an appropriate response, customers in the UK can refer disputes to the independent communications ADR body (CISAS or the Ombudsman via Ofcom guidance).

Practical tips and final notes from an industry professional

Call 333 from your Three handset first — it’s free and will often get you straight to the right team. Use the store locator to check direct store phone numbers and reserved appointment slots, and always note the staff member’s name and reference numbers for repairs or complaints. Keep a copy of all receipts and repair forms; these are commonly requested for warranty or dispute resolution.

Finally, if you rely on your phone for work consider paying for an insured upgrade or a short-term replacement handset when leaving a device for repair. This small step reduces downtime; many customers report losing 1–3 working days’ productivity per repair event, so plan accordingly. When in doubt, capture photos of faults and error messages — they help advisers diagnose problems faster when you call 333 or visit a Three store.

What is the number for three international customer service?

Shipping Address – III International. Please provide a referral ID. If you do not have a referral ID; we recommend that you reach out to the person who referred you to this site and request their ID number. Alternatively, you may contact our customer support team at 1-385-333-3388.

What is the phone number for three customer service?

For any other queries related to your Three service, product or order, please call Three customer support on 333 from your Three phone (or 0333 338 1001 from any other phone).

What is my Three number?

An AI Overview is not available for this searchCan’t generate an AI overview right now. Try again later.AI Overview To find your Three UK mobile number, you can either check your phone’s settings or log into your My3 account. On an iPhone, navigate to Settings > Phone > My Number. On an Android device, go to Settings > About Phone > Status or Phone Identity. If you have Three broadband, you can find the number by connecting a device to your hub, going to 192.168.8.1, and logging in via the My3 account.  Here’s a more detailed breakdown: For Three mobile:

• iPhone: Go to Settings > Phone > My Number. 
• Android: Go to Settings > About Phone (or About Device) > Status (or Phone Identity). 
• My3 Account: Log into your My3 account on your phone or computer and navigate to the Top-up section. 

For Three broadband:

1. Connect a device to your Three broadband hub.
2. Open a web browser and go to 192.168.8.1.
3. Log in using the password found on the back of your hub.
4. Navigate to My device > My Number. 

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How do I call straight talk customer service?

For assistance or more information about your Straight Talk Product or Service, please contact Straight Talk Customer Care at 1-877-430-2355. Important Notice: Many customer concerns can be resolved quickly and to your satisfaction by contacting the Customer Care Department, at 1-877-430-2355.

Does Three have a free phone number?

Welcome to the Three Community. You can reach the Support Team on 333 from any Three phone, or if you’re calling from any other line, you can reach them on 0333 338 1001 which is a standard land line number, free to call from any line that has free landline calls.

How can I talk to a person at Three?

0333 338 1001 or use Live Chat.