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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: 12th December 2019

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 smartphone soon and you can claim a pre-paid Mastercard from BT, loaded with up to £80 of money to spend practically anywhere.

On SIM only, you can get a Reward Card worth up to £50, 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 claim a Reward Card worth up to £80 with models like the iPhone 11 Pro and Samsung Galaxy S10 Plus.

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


EE's Christmas deals on SIMs and phones

EE Christmas offers

See Christmas offers

(opens in new window)

Order by 23rd December for EE's Christmas offers on SIMs including:

If you're after a new smartphone contract, you can get 60GB for the price of 10GB until 6th January. The Samsung S10+ is £30 up front then £54 a month and the iPhone XR is only £10 up front then £54 a month.

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 we've got a couple of fairly competitive deals.

This £14 deal currently comes with 20GB of data allowance and unlimited minutes:

Or use our special link below to get a hidden offer, not advertised directly at

Useful link: All iD Mobile's special offers


O2's Black Friday deals

O2's Black Friday offers

See the deals

(opens in new window)

O2 have launched their Black Friday offers on phone contracts and SIM only plans

Order by 22nd December for the best SIM prices on O2's 18-month contracts. This 100GB plan is unusually good value for O2:

While on smartphones, O2 have reduced the total device cost of all the models here.

Useful link: See all O2's latest offers


Plusnet's hidden SIM only deals

Plusnet's SIM only deals

See regular deals

(opens in new window)

This month, Plusnet Mobile are offering some fairly competitive hidden deals specifically for savvy deal seekers reading comparison websites like ours. They're all on flexible 30‑day contracts using the EE network:

You need to order by 27th December to secure these prices. At the time of writing, both deals highlighted above are the cheapest 30-day plans available for those allowances with unlimited minutes.

Useful link: See all other offers

Sky Mobile

Christmas offers on Sky Mobile

Sky Mobile tablet offer

See tablet offer

(opens in new window)

Use our link below to get a hidden 50% discount off Sky's 3GB plan, making it a ludicrously cheap £6 a month:

Save £60 in a year with Sky Mobile's discounted £15 £10 a month 8GB plan, which also comes with unlimited streaming for Sky TV apps:

The same plan has been reduced on every phone too meaning, you can save £120 over a 24-month contract on the 8GB plan, or £180 on a 36-month deal.

Get a Galaxy Tab A included with a Samsung Galaxy S10 or A70. Or save a further £2 a month on any plan, including the already-discounted 8GB one, with the bigger Samsung Galaxy S10+

Useful link: All current Sky Mobile offers


Get 45GB for the price of 8GB on SMARTY

Supercharge your large banner

See full offer

(opens in new window)

Order by 17th December to benefit from SMARTY's Supercharge Your Large offer that gets you 45GB for the price of 8GB on a 1-month plan. And you can get up to £10 of payback a month for unused data on this plan:

The extra data lasts for 12 months before returning to 8GB (you can still leave at any point though).

For just £2 a month extra, you can get more than double the data if you order by 16th December:

And SMARTY have even reduced their unlimited data plan for your first 12 months too by a useful £3 a month:

Useful link: Full offer 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 seasonal SIM deals

Virgin Mobile 8GB SIM banner

See these deals

(opens in new window)

Order soon to get this excellent 25GB SIM only offer from Virgin Mobile:

Or there's a competitively priced 1GB 3GB for £7 offer which expires on 18th December.

Virgin's Christmas deals on smartphone contracts have some decent discounts and valuable gifts:

 Samsung Galaxy S10+ and Nintendo Switch from £42 £36 a month

 iPhone XR and Airpods from £28 a month

Useful link: See all Virgin's special offers on one page at


Vodafone's unlimited everything SIMs

Vodafone unlimited data SIM offers

See all plans

(opens in new window)

Enjoy 5G data speeds at no extra cost with Vodafone's Unlimited Max SIM only plan:

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 new 5G unlimited data plan

VOXI's unlimited data SIM

See the plan

(opens in new window)

All VOXI's plans are currently at their regular price but they have recently launched this unlimited data plan with 5G data where available:

It's cheaper than Vodafone's own unlimited data plans and comes on a shorter 1-month deal.

Useful link: All other VOXI deals

SIM Sherpa can help you find your next SIM only deal

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