Best Black Friday SIM only deals

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EXCLUSIVE
Unltd
texts
250
minutes
1GB
of 5G data
1
month contract
£1.99
per month
  • First 3 months half price
  • 50 international minutes to over 40 countries
  • Free delivery
  • 14 day returns policy
EXCLUSIVE
Unltd
texts
Unltd
minutes
3GB
of 5G data
1
month contract
£2.49
per month
  • First 3 months half price
  • 50 international minutes to over 40 countries
  • Free delivery
  • 14 day returns policy
EXCLUSIVE
Unltd
texts
Unltd
minutes
4GB
of 5G data
1
month contract
£2.99
per month
  • First 3 months half price
  • 100 international minutes to over 40 countries
  • Free delivery
  • 14 day returns policy
EXCLUSIVE
Unltd
texts
Unltd
minutes
7GB
of 5G data
1
month contract
£3.49
per month
  • First 3 months half price
  • 100 international minutes to over 40 countries
  • Free delivery
  • 14 day returns policy
EXCLUSIVE
Unltd
texts
Unltd
minutes
10GB
of 5G data
1
month contract
£3.99
per month
  • First 3 months half price
  • 100 international minutes to over 40 countries
  • Free delivery
  • 14 day returns policy
EXCLUSIVE
Unltd
texts
Unltd
minutes
12GB
of 4G data
1
month contract
£4.00
per month
  • First 3 months half price
  • Unrestricted tethering in the UK
  • Free delivery
Unltd
texts
Unltd
minutes
3GB
of 4G data
1
month contract
£4.95
per month
  • Free delivery
  • 14 day returns policy
Unltd
texts
Unltd
minutes
2GB
of 4G data
1
month contract
£4.95
per month
  • Free delivery
  • 14 day returns policy
Unltd
texts
Unltd
minutes
2GB
of 4G data
1
month contract
£5.00
per month
  • Unrestricted tethering in the UK
  • No speed caps
  • Free delivery
Unltd
texts
Unltd
minutes
1GB
of 4G data
1
month contract
£5.00
per month
  • Free delivery
  • 14 day returns policy

Black Friday SIM only deals 2021

Black Friday bag

There are major savings to be had on SIM only deals for Black Friday and Cyber Monday. We've tracked down the very best SIMs from the likes of Three, SMARTY and Vodafone right here.

Compare deals

Our pick of the standout Black Friday & Cyber Monday SIM only deals for 2021

We'll be taking stock of all the SIM contracts networks are offering this year and highlighting the standout offers on this page.

Black Friday & Cyber Monday SIMs with unlimited data

Provider Data Amount Contract Length Monthly Costs
Vodafone sim only 100GB data 12 months £16.00
SMARTY sim only Unlimited data 1 month £16.00
ID sim only 100GB data 12 months £15.00
Three sim only Unlimited data 12 months £18.00
Three sim only Unlimited data 12 months £16.00
  • Vodafone sim only
    5G
    • 100GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • £16.00 per month
    12 month contract From Mobiles.co.uk
  • SMARTY sim only
    4G
    • Unlimited 4G data
    • Unlimited minutes
    • Unlimited texts
    • No speed caps
    • £16.00 per month
    1 month contract From SMARTY
  • ID sim only
    5G
    • Exclusive
    • 100GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • Includes a £30 gift card
    • £15.00 per month
    12 month contract From iD Mobile
  • Three sim only
    5G
    • Unlimited 5G data
    • Unlimited minutes
    • Unlimited texts
    • £18.00 per month
    12 month contract From Buymobiles.net
  • Three sim only
    5G
    • Unlimited 5G data
    • Unlimited minutes
    • Unlimited texts
    • £16.00 per month
    12 month contract From Three Mobile

Buymobiles Black Friday & Cyber Monday SIM deals

Buymobiles offers quick and easy SIM only packages at affordable prices and has scooped up many different awards over the years for its efforts, including the best retailer four years in a row at the EE Independent Retail Partnership Awards.

Indeed, Buymobiles has a heck of a lot to offer, and Black Friday & Cyber Monday is the perfect time to get a SIM-only deal.

Provider Data Amount Contract Length Monthly Costs
Three sim only 12GB data 12 months £10.00
Three sim only Unlimited data 12 months £18.00
  • Three sim only
    5G
    • 12GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • £10.00 per month
    12 month contract From Buymobiles.net
  • Three sim only
    5G
    • Unlimited 5G data
    • Unlimited minutes
    • Unlimited texts
    • £18.00 per month
    12 month contract From Buymobiles.net

Three Black Friday & Cyber Monday SIM deals

Three's Go Roam and Go Roam Around the World international roaming schemes are some of the most comprehensive and wide-ranging offered by a UK network.

Customers also get freebies and money-off deals through Three's Wuntu app. Three's premium plans also include its Go Binge scheme, which allows you to use select streaming services without using up any data.

Provider Data Amount Contract Length Monthly Costs
Three sim only 30GB data 12 months £10.00
  • Three sim only
    5G
    • 30GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • £10.00 per month
    12 month contract From Three Mobile

SMARTY Black Friday & Cyber Monday SIM deals

SMARTY stands out for its affordable 30-day plans, as well as the offer of discounts for customers at the end of the month for any unused data they have.

All SMARTY plans come with unlimited calls and texts, with the option to cancel at any time with 30 days' notice.

Provider Data Amount Contract Length Monthly Costs
SMARTY sim only 12GB data 1 month £4.00
SMARTY sim only 12GB data 1 month £4.00
SMARTY sim only Unlimited data 1 month £16.00
  • SMARTY sim only
    4G
    • Exclusive
    • 12GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • First 3 months half price
    • £4.00 per month
    1 month contract From SMARTY
  • SMARTY sim only
    4G
    • Exclusive
    • 12GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • First 3 months half price
    • £4.00 per month
    1 month contract From SMARTY
  • SMARTY sim only
    4G
    • Unlimited 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • No speed caps
    • £16.00 per month
    1 month contract From SMARTY

Virgin Mobile Black Friday & Cyber Monday SIM deals

Virgin Mobile combines good coverage with affordable plans that include unlimited texts. As with VOXI, it also allows you to use Twitter, Facebook Messenger and WhatsApp Messaging without affecting your data-allowance.

You also get inclusive roaming in up to 43 locations and the option to roll over unused data to the next month.

  • Virgin sim only
    5G
    • Exclusive
    • 4GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Includes a £10 Amazon Gift Card
    • £6.00 per month
    12 month contract From Virgin Mobile
  • Virgin sim only
    5G
    • 40GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Includes capping + data rollover
    • £14.00 per month
    12 month contract From Virgin Mobile
  • Virgin sim only
    5G
    • 50GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Includes capping + data rollover
    • £16.00 per month
    12 month contract From Virgin Mobile

VOXI Black Friday & Cyber Monday SIM deals

VOXI specialises in affordable SIM-only plans with no long-term contracts and the option to use use social media sites as much as you like without eating into your data allowance.

It also offers incentives when you recommend a friend and inclusive roaming in 48 locations.

Provider Data Amount Contract Length Monthly Costs
VOXI sim only 8GB data 1 month £10.00
VOXI sim only 8GB data 1 month £10.00
VOXI sim only Unlimited data 1 month £35.00
  • VOXI sim only
    5G
    • 8GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Unlimited social data
    • £10.00 per month
    1 month contract From VOXI
  • VOXI sim only
    5G
    • 8GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Unlimited social data
    • £10.00 per month
    1 month contract From VOXI
  • VOXI sim only
    5G
    • Unlimited 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £35.00 per month
    1 month contract From VOXI

Giffgaff Black Friday & Cyber Monday SIM deals

The great thing about Giffgaff is that it likes to put more power in the hands of its customers. This means more flexibility, allowances and monthly costs you can switch any time, plus excellent customer service from its enthusiastic community.

Provider Data Amount Contract Length Monthly Costs
GiffGaff sim only 15GB data 1 month £10.00
GiffGaff sim only 15GB data 1 month £10.00
GiffGaff sim only 100GB data 1 month £20.00
  • GiffGaff sim only
    5G
    • 15GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £10.00 per month
    1 month contract From giffgaff
  • GiffGaff sim only
    5G
    • 15GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £10.00 per month
    1 month contract From giffgaff
  • GiffGaff sim only
    4G
    • 100GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £20.00 per month
    1 month contract From giffgaff

BT Mobile Black Friday and Cyber Monday deals

BT Mobile currently uses the most comprehensive mobile network in the UK, EE Mobile. Plus, if you go with BT, you’ll also get access to its 5 million UK Wifi spots, as well as taka advantage of family SIM plans, too.

Provider Data Amount Contract Length Monthly Costs
BT Mobile sim only 10GB data 12 months £15.00
BT Mobile sim only 16GB data 12 months £17.00
BT Mobile sim only 60GB data 12 months £25.00
  • BT Mobile sim only
    5G
    • 10GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £15.00 per month
    12 month contract From BT Mobile
  • BT Mobile sim only
    5G
    • 16GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £17.00 per month
    12 month contract From BT Mobile
  • BT Mobile sim only
    5G
    • 60GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £25.00 per month
    12 month contract From BT Mobile

Can't find a deal here that suits you? Take a look at a wider range on our SIMs comparison page.

Looking for a new phone instead? Head to our dedicated page to compare Black Friday and Cyber Monday phone deals.

Frequently asked questions

When do networks announce Black Friday SIM only deals?

Black Friday and Cyber Monday take place on 29th November and 1st December respectively. But Black Friday-branded, cut-price SIM only deals from major networks usually go on sale much earlier in the month.

We'll be flagging what we consider the best deals right here, as and when they come to market. So be sure to keep checking this page, so you don't miss the chance to save some money.

Looking for Black Friday deals on Samsung Galaxy phones too? Take a look at our pick of the best.

We've sought out the best iPhone deals for Black Friday too. Take a look and see what's on offer.

How much can I save on a SIM deal on Black Friday?

The best savings are usually to be had on SIM only plans tailored to heavy users. Shop around on Black Friday weekend and it's not difficult to get a SIM deal with a monthly allowance of 20GB of more for significantly less than £15 per month.

At the other end of the pricing scale, look out for Black Friday SIMs from the likes of iD Mobile and giffgaff that get you a decent amount of data for not much more than £5 per month.