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Mobile special offers: current best deals on SIM only & phone contracts

Phone, SIM card and special offer tag

The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More

We list every UK mobile network's latest special offers on one page to help you get the best value out of your next mobile deal. SIM Sherpa is your trusty guide. Last updated: 10th January 2020

Networks featured

Three logo
BT Mobile logo
EE logo
giffgaff logo
ID logo
O2 logo
Virgin Mobile logo
Vodafone logo
VOXI logo

BT Mobile

Claim pre-paid Mastercards worth up to £80

Order a qualifying SIM only plan by 6th February and you can claim a pre-paid Mastercard from BT, loaded with up to £80 of money to spend practically anywhere.

You can get a Reward Card worth up to £80, depending on the plan (see full range of SIMs and rewards here). We think their best value plan is this option which lets you claim a £40 pre-paid Mastercard:

Go for a new smartphone contract and you can get double or triple data on certain plans, or free Apple TV+ with some iPhones.

Useful link: See latest BT Mobile Gift Card offers in our guide


EE's January Sale

EE's January Sale

See all offers

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Order by 30th January to get a deal in EE's January sale, including this 18-month 60GB for just £20 a month:

If you're after a new smartphone contract, there are some modest discounts off these mid-range phone models.

For maximum flexibility order an EE Flex SIM by 30th January 2020 to get triple data for six months on plans including: 2GB 6GB for £10 a month and 5GB 15GB for £15 a month (30-day rolling contract).

Useful link: See all EE's latest offers > (opens in new tab)


£5 free giffgaff credit with your first £10 top up

giffgaff free credit offer

Get £5 free credit

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On SIM only, giffgaff don't really tend to have big discounts or promotional plans ever. But you can get £5 of free credit when you first sign up.

Use our special order link here, top up with at least £10 (or buy a goodybag for £10 or more) and giffgaff will automatically add £5 of welcome credit to your account.

If you're after a smartphone, you can use the £5 free credit offer. See giffgaff's latest phone contract pricing here.

Useful link: Get free credit on giffgaff now

iD Mobile

iD's affordable SIM only deals

iD Mobile unlimited texts and minutes banner

See all deals

(opens in new window)

iD Mobile are always among the cheapest mobile networks for the lower data plans. This month they've got a couple of reasonably competitive deals:

Useful link: All iD Mobile's special offers


O2's Winter Sale deals

O2's Winter Sale banner

See all offers

(opens in new window)

It's Winter Sale time on O2 with offers on phones, tablets and SIM only plans.

On SIM only you can get 3 months half price on selected 12-month and 18-month plans when you order by 5th Feb, including this deal, which we think is the best value of all their offers:

On smartphones, there are discounts of up to £200 off the total device cost of the Apple and Samsung models listed here, when you order by 15th January.

Useful link: See all O2 Winter Sale offers


Plusnet's current SIM only offers

Here's a look at the best offers currently available on Plusnet Mobile:

Sky Mobile

January Sale on Sky Mobile

Sky Mobile January SIM only deal

See the offer

(opens in new window)

Sky currently have the UK's cheapest 3GB SIM only plan, with their 50% off offer below, which still comes with free streaming data, for just £6 a month.

Sky have reduced the same 3GB plan as SIM only on all their phone contracts by £6 a month too. On 24-month deals, that means a £144 saving. On 36-month ones, it's £216.

That can be combined with getting a free Samsung Galaxy Watch Active with any of these Galaxy S10 and Note 10 phone models.

Useful link: All current Sky Mobile offers


Record-breaking value from SMARTY

SMARTY 30GB for £10 offer banner

Get this deal

(opens in new window)

SMARTY have just unveiled new pricing for three of their plans, including this 30GB for £10 deal that's the most data we've ever seen for the price:

There's also a 50GB for £15 deal. And their unlimited data plan is now priced at £20

Useful link: Full terms and conditions at

Tesco Mobile

Tesco Mobile's 2GB for £7.50 SIM deal

Tesco Mobile 2GB SIM banner

See all deals

(opens in new window)

This month you'll find fairly average prices on SIM only plans with Tesco Mobile, who are always among the cheapest of the providers using the O2 network for coverage. This offer is one of their more competitively priced plans:

The SIM only offers this month may not be making headlines but Tesco Mobile do have some excellent prices on smartphone contracts.

If you're ready to go for a new phone, there are some decent discounts off the device cost of all the iPhone, Samsung and Huawei models listed here.

Useful link: See all Tesco Mobile offers


Market-leading offers on Three

Three's Black Friday unlimited data deal

See full offer

(opens in new window)

Three have several superb offers currently available, some of which you can only access via hidden links.

For unlimited data you've got a choice of this hidden £18 offer with a better ongoing monthly cost:

Or 6 months half price on a longer 24-month contract but with a more expensive ongoing cost:

For less data, see their hidden 4GB 8GB for £13 £8 and 12GB for £12 £10 offers, which offer more data for less money than what's advertised directly at Three.

If it's a phone contract you're after, now's an excellent time to buy on Three. You can claim up to £150 in cashback on certain phone models.

Useful links: See all latest Three offers

Virgin Mobile

Virgin Mobile's winter SIM deals

Virgin Mobile 8GB SIM banner

Get 2GB for £6

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Vodafone's double data winter sale

Vodafone unlimited data SIM offers

See all plans

(opens in new window)

Vodafone's winter sale offers have double data on 18‑month SIM plans including:

You'll need to order by 30th January to secure these prices.

Meanwhile, Vodafone have some offers on selected phone contracts too, including one with a £308 discount! See all phone offers here.

Useful link: Vodafone's deals page


VOXI's winter sale data boosts

VOXI's winter sale banner

See the deals

(opens in new window)

Two of VOXI's plans have boosted data allowances until 19th February:

These are cheaper than Vodafone's own equivalent plans and come on a flexible 30‑day deal with no contract.

Useful link: All other VOXI deals

SIM Sherpa can help you find your next SIM only deal

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