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Choose your plan
Unlimited
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£70.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£73.36
From Apr 2028 bill
£75.86
Monthly cost breakdown:
£33.86 Device + £37.00 Airtime
Unlimited
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£74.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£77.35
From Apr 2028 bill
£79.85
Monthly cost breakdown:
£33.86 Device + £40.99 Airtime
Unlimited
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£79.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£82.35
From Apr 2028 bill
£84.85
Monthly cost breakdown:
£33.86 Device + £45.99 Airtime
125GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£65.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£68.36
From Apr 2028 bill
£70.86
Monthly cost breakdown:
£33.86 Device + £32.00 Airtime
125GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£69.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£72.35
From Apr 2028 bill
£74.85
Monthly cost breakdown:
£33.86 Device + £35.99 Airtime
125GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£74.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£77.35
From Apr 2028 bill
£79.85
Monthly cost breakdown:
£33.86 Device + £40.99 Airtime
30GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£60.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£63.36
From Apr 2028 bill
£65.86
Monthly cost breakdown:
£33.86 Device + £27.00 Airtime
30GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£64.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£67.35
From Apr 2028 bill
£69.85
Monthly cost breakdown:
£33.86 Device + £30.99 Airtime
30GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£69.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£72.35
From Apr 2028 bill
£74.85
Monthly cost breakdown:
£33.86 Device + £35.99 Airtime
5GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£57.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£60.36
From Apr 2028 bill
£62.86
Monthly cost breakdown:
£33.86 Device + £24.00 Airtime
5GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£61.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£64.35
From Apr 2028 bill
£66.85
Monthly cost breakdown:
£33.86 Device + £27.99 Airtime
5GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£66.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£69.35
From Apr 2028 bill
£71.85
Monthly cost breakdown:
£33.86 Device + £32.99 Airtime
Features
Tech Specs
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200MP
Camera
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Fast Charging
Charging Times
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218g
Weight
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6.9 inches
Screen Size
Brand:
Samsung
Weight (g):
218g
Battery (eComm):
5000mAh
Processor:
Qualcomm SM8750 4.47GHz
Dimensions (mm):
162.8 x 77.6 x 8.2 (mm)
Resolution:
3120 x 1440
Screen Size (inches):
6.9 inches
What's In The Box:
Device, USB C Data, Quick Start Guide, Warranty Card, Ejection Pin
Internal Storage (GB):
256GB / 512GB / 1TB
Operating System (eComm):
Android
Water Resistance (IP Rating):
IP68
Removable battery:
No
Facial Recognition:
Yes
Fingerprint Recognition:
Yes
GPS:
No
NFC (eComm):
Yes
Wi-Fi:
Yes
Dual Sim:
Yes
FM Radio:
No
Sim Type (Nano etc):
Nano sim 4FF / Esim
Band Type:
Qualcomm SDR875
Bluetooth:
Yes
Fast Charging:
Yes
Charger in box:
No
Wireless Charging (eComm):
Yes
Wi-Fi and 4G Calling:
Yes
Type of Audio Connector:
USB-C
Type Of Charger Connector:
USB-C
Audio:
Speakers
Flash:
LED Both
Video:
8K
Rear Camera (MP):
200MP/ 50MP/ 50MP/ 10MP
Front Camera (MP):
12MP
Music Player:
Yes
Why O2 ?
)
A network you can trust
We're here for you whenever you need us. So you can stay connected to the people that matter.
)
Get Priority
From unique prize draws to unforgettable moments. Priority gives you invite-only access to gigs, perks and experiences.
)
My O2
Check your bill, view your balance, add Bolt Ons and more. Anytime, anywhere.
FAQs
The Samsung Galaxy S25 Ultra was released on 7 February, 2025. It's available for buy now, shop our range of Galaxy S25 Ultra pay monthly contracts.
The Samsung Galaxy S25 Ultra is designed for peak performance.With Galaxy AI managing tasks, a lightning-fast processor, and a stunning 6.9-inch Dynamic AMOLED 2X display, it’s perfect for work or play. The quad-lens camera system, including a 200MP wide lens, ensures pro-quality photos and videos no matter the scenario, while the 5000mAh battery keeps you powered all day.It’s the ultimate smartphone for your busy life.
Get ready to elevate your images with Samsung Galaxy S25 Ultra’s exceptional camera system.Thanks to its AI-enhanced software, snap professional-level pictures with ease. The advanced quad-lens rear setup includes a 200MP wide lens, two 50MP lenses, and a 10MP lens, all working together to deliver flawless results. Meanwhile, the 12MP front camera captures stunning selfies and ensures sharp, vibrant video calls.Whether it’s a quick picture in the moment or a curating cinematic masterpiece, the Galaxy S25 Ultra makes every shot picture-perfect.
Experience unparalleled visuals on the breathtaking 6.9-inch Dynamic AMOLED 2X display, featuring a sharp 3120 x 1440 resolution. Whether you're gaming, browsing, or simply scrolling, enjoy an exceptional viewing experience every time.
The Samsung Galaxy S25 Ultra is available in 4 stunning finishes: Titanium Black, Titanium Silverblue, Titanium Grey, or Titanium Whitesilver.
Yes, it does. The Samsung Galaxy S25 Ultra comes equipped with the innovative Galaxy AI to transform your daily routine.Designed to simplify your life, Galaxy AI takes care of repetitive tasks with ease, freeing up your time and energy for the things that truly matter. With the S25 Ultra, managing your day and staying on top of your schedule has never been more effortless.
We have a range of contracts and payment options for the Galaxy S25 Ultra here at O2. Choose from one of our pre-built plans, or switch it up and tailor one to you. Plus, you'll get exclusive access to O2 Priority and other exciting offers.
Keep going all day with the Samsung Galaxy S25 Ultra. Its powerful 5000mAh battery ensures you have the energy to stay connected, work, and play without interruptions.
The Samsung Galaxy S25 Ultra offers three spacious storage options: 256GB, 512GB, and a massive 1TB. Perfect for storing your favourite apps, cherished photos, and everything in between.
Right here at O2. We have an incredible range of Samsung Galaxy S25 Ultra pay monthly deals and contracts available; have a browse and shop now.
The legal bit
Custom plans
Direct purchases only. Pay the cash price for your device or spread the cost over 3 to 36 months (excludes dongles). Certain device costs available to be spread over 3 to 48 months. The cost of your Device will be the same however long you choose. There may be an upfront cost. For customers who took out an O2 Refresh custom plan on or after 17 December 2021, your Airtime Plan and Device plans unlink after 24 months. This means that if you are in the first 24 months of your Device Plan you will have to pay off your Device Plan in full if you decide to end your Airtime Plan. After 24 months you can: keep your Airtime and Device Plans without changing anything Cancel your Airtime Plan and keep paying off your Device Plan instalments or, Cancel your Airtime Plan and pay off your Device Plan in full. For customers who took out an O2 Refresh custom plan before the 17 December 2021 the Airtime and Device Plans remain linked for the duration of the Device Plan, this means you will have to pay off your Device Plan in full if you decide to end your Airtime Plan at any point.
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 Telefonica UK Ltd, 500 Brook Drive, Reading, RG2 6UU, UK. Terms apply, see o2.co.uk/terms.
Get Unlimited Data
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. This policy asks that you only use our services or SIM cards for private, personal and legitimate consumer purposes, and not for business purposes. See more at www.o2.co.uk/fair-usage-policy. 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. For full terms see www.o2.co.uk/terms.
Subject to Annual Price Increase
Monthly price of your Airtime Plan will increase by £2.50 each April, except Data Only and Smartwatch Plans which will increase by 75p. Out of bundle charges increase by 5% every 1 April.