O2 Promo Codes & Cashback 2021

Updated May 14, 2021
O2 is the UK’s leading provider of mobile phones and mobile broadband, offering a great choice of phone handsets, SIM only, tablets, wearables and iPad SIM deals. As well as all this, O2 also offers its customers amazing exclusive incentives. Make sure to use O2 promo codes and O2 discount codes for savings on your next plan.
Cashback Rates
£95 cashback
for a pay monthly handset contract with a tariff of £60+
3 uses today
2% cashback
for all Smartwatches sales, including Apple Watch Series 5
£5 cashback
for a pay monthly dongle or hotspot
£7.50 cashback
for a pay monthly SIMO contract with a tariff of £9.99 or less
£20 cashback
for a pay monthly SIMO contract with a tariff of £10 - £14.99
£35 cashback
for a pay monthly SIMO contract with a tariff of £15 - £19.99
£45 cashback
for a pay monthly SIMO contract with a tariff of £20 - £24.99
£60 cashback
for a pay monthly SIMO contract with a tariff of £25 - £29.99
£70 cashback
for a pay monthly SIMO contract with a tariff of £30 or more
£25 cashback
for a pay monthly handset contract with a tariff up to £19.99
£35 cashback
for a pay monthly handset contract with a tariff £20 - £29.99
£55 cashback
for a pay monthly handset contract with a tariff £30 - £39.99
£65 cashback
for a pay monthly handset contract with a tariff £40 - £49.99
£85 cashback
for a pay monthly handset contract with a tariff £50 - £59.99
3% cashback
for accessory sales

20%
OFF
8 uses today

20% off Airtime Plans with the O2 student discount

20% Off
8 uses today

20% off Airtime Plans with the O2 student discount

25%
OFF
9 uses today

Up to 25% off Airtime plans for NHS employees and teachers with O2 Open

25% Off
9 uses today

Up to 25% off Airtime plans for NHS employees and teachers with O2 Open

10%
OFF
34 uses today

Over 10% off with the latest deals and promotions

Score amazing prices on O2 SIM only plans, mobile phones, accessories, and much more when you shop these offers. Get your upgrade and save today!
10% Off
34 uses today

Over 10% off with the latest deals and promotions

Score amazing prices on O2 SIM only plans, mobile phones, accessories, and much more when you shop these offers. Get your upgrade and save today!

25%
OFF
17 uses today

15-25% off eligible plans with O2 Open

25% Off
17 uses today

15-25% off eligible plans with O2 Open

20%
OFF
8 uses today

20% off Airtime with with the Family Plan

Add up to 20 connections and score 20% off for every eligible connection.
20% Off
8 uses today

20% off Airtime with with the Family Plan

Add up to 20 connections and score 20% off for every eligible connection.

£5
OFF
2 uses today

Pay As You Go Offer: Register for My O2 and score a £5 free credit

£5 Off
2 uses today

Pay As You Go Offer: Register for My O2 and score a £5 free credit

£10
OFF
3 uses today

£10 free credit with select SIM cards

Check out these O2 SIM Only offers with pay as you go plans. Right now, when you buy a £5, £10, £15, or £30 Big Bundle you'll receive a £10 credit with activation.
Get Deal
£10 Off
3 uses today

£10 free credit with select SIM cards

Check out these O2 SIM Only offers with pay as you go plans. Right now, when you buy a £5, £10, £15, or £30 Big Bundle you'll receive a £10 credit with activation.

10%
OFF
3 uses today

Receive 10% of your top-ups back every 3 months with O2 Rewards

10% Off
3 uses today

Receive 10% of your top-ups back every 3 months with O2 Rewards

£20
3 uses today

Ending Soon - 150GB SIM Only plan for £20

Save on this O2 SIM Only plan! Take advantage of this deal and get 150GB of data for £20 per month for a limited time only.
£20
3 uses today

Ending Soon - 150GB SIM Only plan for £20

Save on this O2 SIM Only plan! Take advantage of this deal and get 150GB of data for £20 per month for a limited time only.

£144
OFF
1 use today

Ends Soon - iPhone 12 Mini on sale for up to £144 off

Don't miss out on this O2 phone deal! Take up to £144 off a new iPhone 12 Mini when you shop this sale.
Get Deal
£144 Off
1 use today

Ends Soon - iPhone 12 Mini on sale for up to £144 off

Don't miss out on this O2 phone deal! Take up to £144 off a new iPhone 12 Mini when you shop this sale.

£72
OFF
1 use today

£72 off the iPhone 12 5G for a limited time

Looking for a deal on an O2 iPhone? Get an iPhone 12 and save £72 with this special offer!
Get Deal
£72 Off
1 use today

£72 off the iPhone 12 5G for a limited time

Looking for a deal on an O2 iPhone? Get an iPhone 12 and save £72 with this special offer!

FREE
SUBSCRIPTIONS
3 uses today

Free music, audiobook or TV subscriptions with your device or SIM Only contracts

Choose an O2 extra with your devices or SIM contracts for free! Get Audible, Prime Video, Amazon Music and many more without any extra costs for up to 6 months!
Free Subscriptions
3 uses today

Free music, audiobook or TV subscriptions with your device or SIM Only contracts

Choose an O2 extra with your devices or SIM contracts for free! Get Audible, Prime Video, Amazon Music and many more without any extra costs for up to 6 months!

£250
OFF
1 use today

Clearance: Phones and tablets for up to £250 in savings

Explore the O2 Shop clearance section and save on accessories, tablets, and phones for a limited time.
£250 Off
1 use today

Clearance: Phones and tablets for up to £250 in savings

Explore the O2 Shop clearance section and save on accessories, tablets, and phones for a limited time.

£2
OFF
2 uses today

£2 off your monthly bill when you add Disney+ to your current plan

Enjoy tons of entertainment options for less! With this O2 Disney Plus offer, take £2 off your bill when you add on this service.
£2 Off
2 uses today

£2 off your monthly bill when you add Disney+ to your current plan

Enjoy tons of entertainment options for less! With this O2 Disney Plus offer, take £2 off your bill when you add on this service.

FROM
£15
2 uses today

Apple and Samsung accessories starting from £15

From £15
2 uses today

Apple and Samsung accessories starting from £15

FROM
£10
3 uses today

Special Offer: SIM Only plans starting from £10 monthly

Get a new SIM Only plan from O2 on any budget! Check out these deals and get a new plan for as little as £10.
From £10
3 uses today

Special Offer: SIM Only plans starting from £10 monthly

Get a new SIM Only plan from O2 on any budget! Check out these deals and get a new plan for as little as £10.

FROM
£40
2 uses today

iPhone 12 5G with plans from £40 a month

Get the latest Apple phone for less! Take advantage of this O2 phone deal and get a new iPhone 12 for as little as £40 monthly.
From £40
2 uses today

iPhone 12 5G with plans from £40 a month

Get the latest Apple phone for less! Take advantage of this O2 phone deal and get a new iPhone 12 for as little as £40 monthly.

FREE
DELIVERY
1 use today

Free delivery on all orders

Free Delivery
1 use today

Free delivery on all orders

IN STORE
3 uses today

Free Click and Collect available in select stores

In Store
3 uses today

Free Click and Collect available in select stores

FREE
RETURNS
1 use today

Free returns on all orders within 28 days

Free Returns
1 use today

Free returns on all orders within 28 days

Popular Expired O2 Discount Codes
£150 Off
1 use today

O2 voucher for £150 off upfront costs this summer

Enjoy this O2 deal and save £150 on upfront costs with this promo code at checkout.
£18
1 use today

20GB SIM-only plan for £18 a month | 25GB for £20 | 50GB for £28

Catch these O2 Sim Only offers with prices from £18 for 20GB!
£200 Off
1 use today

Use this O2 discount code for £100 off the Huawei P30

Shop online and enjoy £100 off the Huawei P30 phone when you buy at O2 and use this voucher code at checkout.

Popular O2 Vouchers

Voucher Codes & DealsValueDiscount TypeStatus
Free O2 voucher codes for 10% off contracts10% OffOnline VoucherExpired
O2 £30 off upfront costs£30 OffOnline VoucherExpired
Free top up codes for O2Free Top UpOnline VoucherExpired
O2 20% off SIM free phones20% OffOnline VoucherExpired

More About O2

O2 Online Top Ups

If you're considering your next mobile purchase or thinking about switching carriers, there are lots of options available at O2 online! You can choose from a variety of discounted phone deals or opt for an O2 SIM only deal. It's easy to top up your credit by phone or using O2 online top upservice, so even if you're on a PAYG basis, you won't run out of phone credit any time soon!


O2 Phone Plans

O2 phone plans are easy to tailor to your needs, meaning you get the best phone deals that are customised to your exact requirements. It's easy to upgrade when you choose  a customised phone plan from O2, and you can also spread your balance over 36 months if preferred. Don't forget to shop around for the best O2 promo codes before signing up for your new price plan. 


Contact the O2 Customer Service Team 

Managing your O2 phone service, and using O2 discount codes, is quick and simple from your personal online account, but there are sure to be times you need to get in touch with the O2 customer service team. You may need to find out more about O2 WiFi calling, or perhaps you need to call O2 to cancel your contract. No matter the reason, you can get in touch with a representative by using the O2 phone number, 202, from your mobile device. All other phone numbers are listed on the O2 website; alternatively you can chat with an O2 expert online using the LiveChat facility as well.

FAQs with O2


Does O2 offer student discounts?

Yes. As a student you will be able to get a 20% discount on airtime with your Refresh Plan. You can also receive 20% off select tech accessories. Just prove your student status and start enjoying savings on your mobile plan.


What are the best discounts that O2 offers?

O2 has a whole lot of discounts to choose from. Some of the best and popular discounts include free credit on select SIM only plans, free gifts with mobile phone purchases, 20% off airtime with the family plan, free delivery on all orders and lots more. Browse the Quidco website to stay updated on the best O2 discounts throughout the year.


Where can I find O2 discount codes?

You can either search on the O2 site for discount codes which are published from time to time or you can let Quidco do the job for you. Get updates on the best deals on top mobile phone brands like Apple and Samsung as well as SIM plans when you search on Quidco. Anticipate the Black Friday deals coming soon so you do not miss some of the best discount codes of the year.