Unlimited data SIM only plans

Get ready to enjoy one of the best unlimited data deals in the UK with our Unlimited SIM for your mobile. Or choose our Value SIM for a low-cost, everyday plan.

Our two simple options

The UK’s best value unlimited mobile SIM

It’s a bold claim but here’s why. After your first Unlimited SIM, you can get up to three extra SIMs for only £10 each. That’s perfect for keeping everyone at home connected, and you’ll never have to worry again about how much data everyone uses.

See how we compare

The legal bit

One of the best unlimited data deals in the UK and UKs best value unlimited data SIMS: Based on price, speed and reliability. Price: One of the UK's cheapest unlimited SIMs (excluding introductory offers). Cheapest unlimited multi SIM package in the UK. Prices correct as of 03.06.2021 Speed & reliability: We use the EE network.  RootMetrics® Report 2020 found EE led the way for speed & outstanding reliability. Experiences & coverage may vary. Rootmetrics award is not an endorsement of EE or UW. Visit ROOTMETRICS.CO.UK for more details

Comparison table: Compared against the closest equivalent unlimited data tariffs as of 03.06.2021.  

Switching to UW is simple

Order your SIM

Already with UW? Click here to get an Unlimited SIM online, or call our team on 0333 777 0777. If you’re new to UW, you can join online.

Keep your number

If you’ve already got the perfect digits, you can keep your current phone number. Otherwise, we’ll give you a new number.

You're all set

Your new SIM will arrive in about 3-5 working days, and it’ll be ready to use in your phone from the moment you activate it.

Why choose UW for Mobile

Our mobile service is trusted by over 240,000 customers, who enjoy incredible value on one of the UK's leading networks.

By bundling all of your home services with us, we can provide everything you need in one simple bill. And the more you take, the more you’ll save. That's why we’ve been recognised as Which? Awards Utilities Brand of the Year 2020.

Our Peace of Mind Promise

When you switch all your home services to UW you can get:

£200 towards any early termination fees with existing suppliers

30 days to change your mind, and switch away without penalty

Double the Difference after 12 months if you don’t save

The legal bit

'Up to' savings 

Up to' savings shown combine savings comparisons from any energy or telephony service applicable to that bundle.

For telephony services, savings are the average available. Landline/broadband: our fixed line broadband (incl. 10% discount for Gold Talk & Double Gold) compared to BT, EE, Plusnet, Shell, SSE, Sky, TalkTalk standard price ADSL broadband product or nearest equivalent across a three year period, including line rental, call charges and additional costs such as calling features. Average saving of £16.63 over three years. Mobile: our Unlimited tariff with an iPhone 12 64GB on a 24 month contract compared to EE, GiffGaff, ID, O2, 3, Virgin, Vodafone  equivalent including line rental and additional costs such as mobile handset upfront costs. Average saving of £43.88 over 24 months. Information correct as of 19 April 2021.

Energy savings and guarantee are compared to the Ofgem calculated Price Cap level (which is typically where most large suppliers variable tariffs are priced), based on payment by direct debit for typical household consumption of 2,900 kwh general domestic electricity and 12,000 kwh gas.  Our Energy Price Guarantee does not apply to our Double Gold Fixed and green Fixed tariffs. Information correct as of 22 April 2021.


Market-leading Unlimited mobile tariff

Unlimited data, calls and texts every month when you use your SIM in a personal mobile device. First Unlimited SIM for just £20 per month, then get up to three additional Unlimited SIMs for just £10 each. Rolling 30 day contract - subject to the Residential Fair Usage Policy. Terms & conditions apply.


Cashback card

You can earn unlimited cashback of up to 7% from our Retail Partners each month. Purchases from other retailers are eligible for cashback on general spend of up to £1,000 per month. 1% cashback at non-partner retailers is available for Visa issued cards only. terms & conditions apply. 


Whole Home WiFi with eero devices

Mesh WiFi to extend signal reach for larger homes. £2.50 per eero, per month (plus postage and packaging). Number of eero devices required depends on the size of your property. eero devices can only be taken where you take our broadband service and at least one other service. eero devices are rented to you and must be returned undamaged at the end of the contract. eero devices are locked to the UW network. Terms & conditions apply.


10% off Phone and Broadband

Switch your mobile to us as well, and we’ll give you an extra 10% discount on the cost of your broadband and line rental that could save you over £40 a year! Additional requirements apply to customers who are tenants. Terms & conditions apply.


Energy always cheaper than Ofgem’s Fair Price

When you switch your gas and electricity to us, we guarantee you will save money compared to the Ofgem calculated Price Cap level (which is typically where most large suppliers variable tariffs are priced).  So once you switch to us, you'll never need to switch again!


5-star rated Boiler & Home cover available

Emergency repairs on home essentials - from heating and plumbing, to drains, roofing and electrics. As rated by independent insurance experts, Defaqto and Moneyfacts.

Our best value energy and 100% renewable electricity

Our green fixed tariff (available only as part of the Double Gold bundle) means new customers who take all of our services can power their homes with 100% renewable electricity.


A woodland tree in your name

We’ll fund the planting of a tree for every new customer who takes all of our services. The tree will be planted in the UW Woodland in Bryn Arw in the Brecon Beacons.


£200 to help you switch

When you switch your Home Phone, Broadband and Mobile to us, we'll give you up to £200 towards any termination fees you have to pay to your current providers. Additional requirements apply to customers who are tenants. Terms & conditions apply.


30 days to change your mind

If you’re new to UW and sign up as a Double Gold customer you can cancel any of the following services within 30 days - Home Phone, Broadband, ‘SIM only’ connections, Electricity, Gas and Boiler and Home Cover. You just need to pay for any installation costs and costs you have incurred by using these services. You must also return any equipment we have supplied to enable you to use these services (complete, undamaged and in its original packaging). Terms & conditions apply.


Double the difference

This is your guarantee of saving money when you join UW as a Double Gold customer. We are so confident you will save money overall, compared with your current suppliers, that we'll give you back 'Double the Difference' if you don't! Terms & conditions apply.

Latest Mobile news

Latest news icon award 02

Latest news icon award 02

UW wins Which? Award Utilities Brand of the Year 2020

8 October 2020 - Two years after winning it for the first time, UW has been named Which? Utilities Brand of the Year for 2020.

Latest news icon tariff

Latest news icon tariff

UW launches new simplified mobile tariffs

7 September 2020 - UW launched a new, market-leading mobile tariff with the Unlimited tariff offers unlimited data, minutes and texts, and the option to add up to three additional Unlimited SIMs, for just £20 a month, making it an ideal choice for families.

Latest news icon deal 02

Latest news icon deal 02

UW and BT agree new mobile deal

1 September 2020 - UW and BT announced a five-year extension to their Mobile Virtual Network Operator (MVNO) agreement, allowing UW to offer 5G services to its 300,000 strong mobile customer base.


Does unlimited data really mean unlimited?

Yep, it really does. Unlimited data means there’s no speed restrictions and no data caps when you use your SIM in a mobile phone in the UK. Just keep in mind that our fair use policy does apply – and when roaming in Europe, your data is capped at 14GB each month.

How does a SIM only deal work?

A SIM only deal gives you data, minutes and texts for a monthly cost. The difference, however, is that you don't get a new phone – you get the SIM, and just the SIM.

Can I use my own phone when I join UW?

Of course. You can use our SIMs with any unlocked handset or, as we work with EE, any phone on the EE network too.

Can I get a new phone when I join UW?

Yes, we’ve got a great selection of phones as well. See our full range here. To get a new phone with your SIM, you’ll need to give us a call on 0333 777 0777.

Can I keep my phone number when I join UW?

Yep, simply contact your previous network provider or text 'PAC' to 65075 to get a code which will allow you to bring your current number over to your new SIM. This won’t disrupt your service either.

How do I add more Unlimited SIMs?

You can take up to three additional SIMs when you have an existing Unlimited plan. Log into your online account or the mobile app to add more SIMs yourself, or give us a call on 0333 777 0777 and we’ll help out.

What network does UW use?

We work with the EE Network to ensure broad coverage and signal strength across the country.