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Existing Customers
Existing Customers

Apple Watch is available to O2 Pay Monthly customers with an iPhone 6s or newer (Apple Watch Series 4 also compatible with iPhone 6).

New Customers
New Customers

Before you can get your watch, you'll need to buy an iPhone 6s or newer (Apple Watch Series 4 also compatible with iPhone 6), with an O2 Pay Monthly tariff. Once you've done that, come back and you can add your watch.

Before you can get your watch, you'll need to buy an iPhone 6s or newer (Apple Watch Series 4 also compatible with iPhone 6), with an O2 Pay Monthly tariff. Once you've done that, come back and you can add your watch.

s20 ultra 5g

108MP wide camera

s20 ultra

6.9 inch Infinity-O display

s20 ultra

Huge battery and Super Fast Charging

5G ready

5G ready device

See more features

Tech specs

Reviews

Overall rating

See all reviews

Reviews

Why O2

Why O2?

Robot on a mountain
A network you can trust

We're here for you whenever you need us.

So you can stay connected to the people that matter.

Find out more

Priority
Priority

On O2, you’re the headline act.

Priority gives you invite-only access to tickets, perks and experiences.

Learn more

My O2
My O2

Manage your account 24/7.

View your bills, see your data usage, check your upgrade options and more. Just sign in to My O2 online, or get the app for free.

Learn more

FAQs

FAQs

What is the screen size of the Samsung Galaxy S20 Ultra 5G?

The Samsung Galaxy S20 Ultra 5G has an endless 6.9-inch screen, Infinity-O Dynamic AMOLED display enforced with reinforced Gorilla Glass 6.


What are the specifications of the Samsung Galaxy S20 Ultra 5G?

The Samsung Galaxy S20 Ultra 5G has an IP68 rating, the highest possible level of dust and waterproofing. The Samsung Galaxy S20 Ultra 5G has a 6.9-inch screen, Infinity-O Dynamic AMOLED display enforced with Gorilla Glass 6 and weighs 220g. The Samsung Galaxy S20 Ultra 5G has an unbelievable Quad-Lens camera with an 108 MP Wide-Angle lens, 48 MP telephoto lens and a 12 MP Ultra-Wide lens and VGA ToF (Depth). It also comes with a 40 MP front facing camera. The Samsung Galaxy S20 Ultra 5G has a 5000 mAh battery. It has super-fast charging and wireless power share, allowing you to share your battery with anyone.


Where can I buy a Samsung Galaxy S20 Ultra case?

Right here at O2.

Browse our Samsung Galaxy S20 Ultra cases.


Does 5G work with Dual Sim?

When using two connections in Dual Sim mode, 5G data isn't supported on either connection, so they’ll both use 4G. If you’re using a single sim only (or have only one sim active) and it’s a 5G one, then you can access 5G wherever it’s available on the O2 network.


The legal bit

Save 50% on Samsung cases when bought with any Samsung handset on any pay monthly tariff

between the 29th April 2021 and 23rd June 2021, when purchased directly from in the same transaction. If handset is returned, the discounted product must also be returned. Subject to availability, while stocks last. Terms apply, see o2.co.uk/terms

Custom plans

RPI: Each year your Airtime Plan will be increased by the Retail Price Index (RPI) rate of inflation announced in February plus 3.9%. If RPI is negative, we’ll only apply the 3.9%. You’ll see this increase on your April 2022 bill onwards. Find out more at o2.co.uk/prices.

Direct purchases only. Pay the cash price for your device or spread the cost over 3 to 36 months (excludes dongles). The cost of your Device will be the same however long you choose. A minimum upfront cost may apply. You need a monthly rolling Airtime Plan for the length of the Device Plan. Pay off your Device Plan at any time without charge. You can then keep on your Airtime Plan, upgrade or leave. If your Airtime Plan ends for any reason (including for switching to another operator) you will need to pay your Device Plan in full.

UK calls/texts to standard UK landlines and mobiles and when roaming in our Europe Zone. Fair Usage policy applies. Special and out of bundle numbers chargeable. 4G phone required to access 4G. 4G available in selected areas.

Change your airtime tariff after 30 days and then once every billing month during your minimum contract period, choosing from a selected family of tariffs. Some tariff extras are only available on the starting tariff, are not transferable, and may be lost if you change to an ineligible tariff. Devices are subject to availability.

0% APR. Finance subject to status and credit checks, 18+, Direct Debit. Credit provided by Telefónica UK Ltd, SL1 4DX. Terms apply, see o2.co.uk/terms.

Get Unlimited Data

RPI: Each year your Airtime Plan will be increased by the Retail Price Index (RPI) rate of inflation announced in February plus 3.9%. If RPI is negative, we’ll only apply the 3.9%. You’ll see this increase on your April 2022 bill onwards. See o2.co.uk/prices.

Unlimited Data available on O2 Custom Plans on selected handsets and selected SIM Only tariffs. Fair use policy applies, personal and non-commercial usage only. If you regularly use 650GB of data per month or tether 12 or more devices we may consider this to be non permitted use and have the right to move you to a more suitable plan. EU roaming capped at 25GB per month, chargeable at £3.50 per GB afterwards. For full terms see www.o2.co.uk/terms.

9 out of 10 said they were offered a great value deal

Source: Populus O2 Retail Exits Survey in Merseyside Region, 27 February – 10 March 2020. Sample size and composition: 309 of 348 (88.8%) customers agreeing with the survey statement: “O2 offered me a great value deal”.

Claim cashback with Samsung Blue Rewards. Ends 25 Dec.

Cash Back: Promoter: Samsung Electronics (UK) Limited. UK, Channel Islands, Isle of Man and Republic of Ireland residents aged 18+ holding a valid bank account in the UK, or registered companies only. Purchase a Promotion Product direct from O2 between 3.12.20 – 25.12.20 (“Qualifying Purchase”) and claim a cash back payment from the Promoter (“Cashback”) by claiming at www.samsungpromotions.claims/cashback-offer (“Website”), uploading proof of purchase and all required information. All participants must claim within 30 days from date of Qualifying Purchase. Cashback paid via bank transfer. Participants who purchase at least one additional Promotion Product shall be entitled to claim a cashback boost of £30. Only one cashback boost of £30 may be claimed. Claims must only be made by the end user customer. Maximum 4 claims per household and 250 per registered business during the Promotion Period. See Website for full terms.

*Each year your Airtime Plan will be increased by the Retail Price Index (RPI) rate of inflation announced in February plus 3.9%. If RPI is negative, we’ll only apply the 3.9%. You’ll see this increase on your April 2022 bill onwards. See o2.co.uk/prices.