Become a TopCashback member for cashback, deals and more free perks. Join TopCashback Free

Three SIM Contracts Cashback Offers & Discounts

By joining you agree to our terms & conditions and privacy policy

20,000,000 members worldwide


Our customers love us!


Thousands of
top-named brands

Three SIM Contracts — Cut Your Mobile Costs

Three SIM Contracts Logo

Browse a wide range of SIMs and cut the cost of calling, texting or browsing by earning cashback with our Three mobile deals when you buy online.

If you’re happy with your existing Apple iPhone Pro Max, Samsung Galaxy S20 Ultra 5G 128GB, Honor, Huawei, P30 Lite or Windows device and don't want to pay an upfront cost for one of the latest mobile phones, you can take up a SIM only deal offering unlimited minutes and texts, and which run for either one, 12 or 24 months.You can opt for 4GB data, 8GB data, 12GB data, 30GB data or 100GB data, or, if you need more than that, you can choose an unlimited data SIM. Whatever you need, it's simple to do a price comparison on their existing and new customer deals. If you want to switch to one of Three’s plans from another network, you can keep your existing phone number, enjoy a great Internet experience with one of their 5G ready SIM deals and cut your bills.

Three SIM Contracts Homepage

Use Your Data as a Personal Hotspot

Three's contract SIM deals offer a range of great benefits if you don’t want to fork out for a new pay monthly phone. You can use all of your data allowance as a personal hotspot in the UK, while all of their plans offer unlimited texts and calls, which means you can send as many standard rate messages as you like in the UK without it costing you any extra.

Three’s plans also let you use your monthly data allowance abroad, as well as text and call the UK from abroad, at no extra cost thanks to Go Roam. This brilliant feature is available in more than 70 destinations, from France to Australia.

If you find yourself running out of minutes before your plan renews, you’re able to block any outgoing calls to ensure you’re not hit with any extra charges. You can also block calls and texts to numbers which are not included in your monthly allowance.

If you do find yourself running out of data halfway through the month, there’s no need to panic as you can buy more whenever you like through your My3 account. If you’re looking for some flexibility, you’ve got it.

Finally, as well as fixed data allowances, Three’s usage alerts for minutes and texts means you’ll never send more than you‘ve budgeted for. This all makes them a great alternative to expensive phone contracts. Don't forget, you can get an even better Three SIM only deal by taking advantage of our cashback offers.

Three SIM Contracts Features

  • 5G Ready
  • Go Roam Around the World
  • Go Binge
  • Switch and Keep Your Number
Terms & Conditions
  • What will stop me getting cashback?
    • Cashback is only available for new Customers.

    • Using a promotional/voucher code not posted and approved by TopCashback.
  • What else is essential?
    • All products are eligible for cashback apart from HomeFi, free SIMs, top-ups for existing SIMs, upgrades, existing customer offers, accessories, and add-ons such as insurance.
    • Cashback rates may increase and decrease at short notice.
    • Purchases must be completed immediately and fully online.
    • This merchant calculates cashback excluding VAT, delivery and any other charges.
    • To qualify for cashback, you need to complete your purchase on the same visit. If you exit from the Three website once you’ve clicked through and then come back another time, it won’t register, and you’ll miss out on the cashback.
    • Unless otherwise stated expect transactions for this retailer to appear within 24 hours.
    • Cashback will be validated for active Three accounts after approximately 90 days.
    • Your transaction may initially track at a lower cashback amount before being uplifted once confirmed.
    • Your transaction may initially track at a lower cashback amount before being uplifted once confirmed.
  • What to do when
    • Some merchants may not be forthcoming with untracked cashback. We endeavour to chase untracked cashback but reserve the right to halt enquiries at any time. Please do not make purchase decisions based upon expected cashback as it is not guaranteed.
    • The vast majority of transactions from merchants track successfully, occasionally a transaction may not get reported. If you believe this to be the case, please submit a "Missing Cashback" query no later than 120 days after purchase date. We will be unable review claims older than this.
Please note the terms & conditions above are in addition to our general terms & conditions

About Three SIM Contracts

Get outstanding deals on data, minutes and texts, from the UK’s best network for data. Use your phone abroad at no extra cost in over 70 destinations. Enjoy infinite streaming without using your data.Enjoy freebies and discounts with the Wuntu app exclusive to Three customers.Choose your offer.


  • How does TopCashback make money?
  • How does TopCashback work?
  • Will it cost me anything?
  • When will I actually get my cashback?