Then we’ll take you to the checkout to take advantage of this offer. Authorised and regulated by the Financial Conduct Authority (registration number: 738979). © Hutchison 3G UK Limited 2002 - Present. Useful link: Go to existing customer offers, ✔ You need to log in for upgrade offersSee upgrade options. Now available in 71 destinations, including Spain and New Zealand. They're not so-called 'retention deals' to keep you as a customer. You can connect your tablet on the move and get online whenever you like, with our range of 3G and 4G services. Get it now as a booster with our Three Prepay plans below. Typically, you'll save around £1-£3 on the monthly cost of a phone and often the upfront costs can be reduced or entirely waived vs the new-customer deals. You also can change your settings below: These cookies:✔ Enables tracking via Google Analytics✔ Let us measure which pages are visited most✔ Let us see which mobile deals are most popular✔ Let us measure how well paid marketing is working✔ Store your visit and visitor as anonymous numbers, This single cookie:✔ Remembers your cookie settings on our website✔ Avoids you having to accept/decline cookies on each page✔ Is anonymous and doesn't track your IP address✔ Doesn't follow you around other websites. Existing customer deals Existing Three customers get access to exclusive deals when they take out an additional contract (2nd line) as a reward for being a loyal customer. Remember, these deals are for existing Three customers only, so any non-Three numbers won't be eligible when we're applying the discount. Deliver your tablet to a Three store. Here's what you'll need to do: 1) Go to Three's existing customer offers hub2) Choose your deal3) Enter your Three phone number4) Enter your details in the checkout5) Wait for your new product to arrive! Click on Protect other […] Existing customer SIM Only deals. If you're a customer and you want to upgrade (from a phone to a new phone, from SIM only to a phone contract or from SIM only to a new SIM only plan), you have two options: 1) You can choose any regular deal that's available for new customers (see latest offers here), 2) You can log in at Three.co.uk to see if they have any custom offers for you. Useful link: Existing customer SIM only section, ✔ Savings vary per model / planSee the deals. It's worth saying that only a select number of plans are included and they're always ones that are on sale at full price in the new customer section. Please enter your Three mobile number. Home delivery not convenient? See the latest tablets and internet devices for sale at T-Mobile. Thank you for accepting cookies for the SIM Sherpa website. 3. Non-standard set up may cost extra. Last updated 15th August 2019, ✔ You'll only save against full-price dealsSee current offers. In the My Devices window, click INSTALL PROTECTION. Error. Upfront payment may be required. You can't get the £2 discount against plans that are already on offer. If you're already on a pay monthly SIM only or phone contract with Three, you qualify to take out one of their existing customer SIMs as an additional plan for a friend or family member..