O2
On O2 network
£45.39
/month
£30.00 upfront
Samsung Galaxy S25 Ultra GiffGaff deals
Find the best GiffGaff deal on the Samsung Galaxy S25 Ultra from 270 options.
Expert reviews
4.4
(6)
Spec scores
£700-£999 Phones · 71 phones
Performance
4.9
/5
Display
5
/5
Rear Camera
4.2
/5
Front Camera
2.8
/5
Battery
3.6
/5
Deals
Contract from £46.50 / month
Color
All
Black
Blue
Gold
Green
Grey
Silver
Storage
All
256GB
512GB
1TB
128GB
Power users, photographers, and professionals who want the absolute best Android phone with the most versatile camera system, S Pen productivity, and no compromises on performance or build quality.
Best contract deals for this Samsung Galaxy S25 Ultra
O2
Fonehouse
On Talk Mobile network
£11.95
/month
£585.00 upfront
Data
15GBLength
24 monthsTotal
£872
Mozillion
On EE network
£23.54
/month
£299.00 upfront
Data
10GBLength
24 monthsTotal
£864Samsung Galaxy S25 Ultra Contract (270 deals)
Filters
5G
Galaxy S25 Ultra 256GB (Black)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£46.50 / month
£25.00 upfront
Avg monthly cost: £47.19
Total cost: £1,699.00
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£583.00
Monthly Average Cost:
£1,699.00 ÷ 36 = £47.19
Monthly Cost:
£46.50 x 36 = £1,674.00
Total Cost:
£1,699.00
Upfront Cost:
£25.00
5G
Galaxy S25 Ultra 256GB (Grey)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£46.50 / month
£25.00 upfront
Avg monthly cost: £47.19
Total cost: £1,699.00
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£583.00
Monthly Average Cost:
£1,699.00 ÷ 36 = £47.19
Monthly Cost:
£46.50 x 36 = £1,674.00
Total Cost:
£1,699.00
Upfront Cost:
£25.00
5G
Galaxy S25 Ultra 256GB (Silver)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£46.50 / month
£25.00 upfront
Avg monthly cost: £47.19
Total cost: £1,699.00
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£583.00
Monthly Average Cost:
£1,699.00 ÷ 36 = £47.19
Monthly Cost:
£46.50 x 36 = £1,674.00
Total Cost:
£1,699.00
Upfront Cost:
£25.00
5G
Galaxy S25 Ultra 256GB (Black)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£41.64 / month
£200.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.04
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£699.68
Monthly Average Cost:
£1,699.04 ÷ 36 = £47.20
Monthly Cost:
£41.64 x 36 = £1,499.04
Total Cost:
£1,699.04
Upfront Cost:
£200.00
5G
Galaxy S25 Ultra 256GB (Silver)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£41.64 / month
£200.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.04
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£699.68
Monthly Average Cost:
£1,699.04 ÷ 36 = £47.20
Monthly Cost:
£41.64 x 36 = £1,499.04
Total Cost:
£1,699.04
Upfront Cost:
£200.00
5G
Galaxy S25 Ultra 256GB (Black)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£45.81 / month
£50.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.16
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£599.72
Monthly Average Cost:
£1,699.16 ÷ 36 = £47.20
Monthly Cost:
£45.81 x 36 = £1,649.16
Total Cost:
£1,699.16
Upfront Cost:
£50.00
5G
Galaxy S25 Ultra 256GB (Silver)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£44.42 / month
£100.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.12
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£633.04
Monthly Average Cost:
£1,699.12 ÷ 36 = £47.20
Monthly Cost:
£44.42 x 36 = £1,599.12
Total Cost:
£1,699.12
Upfront Cost:
£100.00
5G
Galaxy S25 Ultra 256GB (Grey)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£45.81 / month
£50.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.16
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£599.72
Monthly Average Cost:
£1,699.16 ÷ 36 = £47.20
Monthly Cost:
£45.81 x 36 = £1,649.16
Total Cost:
£1,699.16
Upfront Cost:
£50.00
5G
Galaxy S25 Ultra 256GB (Black)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£44.42 / month
£100.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.12
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£633.04
Monthly Average Cost:
£1,699.12 ÷ 36 = £47.20
Monthly Cost:
£44.42 x 36 = £1,599.12
Total Cost:
£1,699.12
Upfront Cost:
£100.00
5G
Galaxy S25 Ultra 256GB (Silver)
GiffGaff
Contract
Data
75GBLength
36Minutes
UnlimitedTexts
Unlimited£45.81 / month
£50.00 upfront
Avg monthly cost: £47.20
Total cost: £1,699.16
Go To Deal
Sold by giffgaff
Cost breakdown
Cashback:
£0.00
Contract Length:
36 months
First Year Cost:
£599.72
Monthly Average Cost:
£1,699.16 ÷ 36 = £47.20
Monthly Cost:
£45.81 x 36 = £1,649.16
Total Cost:
£1,699.16
Upfront Cost:
£50.00
Samsung Galaxy S25 Ultra Deals - May 2026
Compare 2,016 contract deals, 1,616 upgrade deals and 42 SIM-free offers for the Samsung Galaxy S25 Ultra from UK retailers.
The best Samsung Galaxy S25 Ultra contract deal starts from £46.50/month with giffgaff.
1,047 refurbished deals available - contracts from £23.54/month and SIM-free from £566.00.
About the Samsung Galaxy S25 Ultra
The Samsung Galaxy S25 Ultra is Samsung's most capable smartphone, combining the raw power of the Snapdragon 8 Elite chipset with a refined titanium design and a camera system built for serious photography. Released in February 2025, it features a slightly larger 6.9-inch QHD+ Dynamic AMOLED display with slimmer bezels and rounded corners that make the phone more comfortable to hold than the angular S24 Ultra. The headline camera upgrade is a new 50MP ultrawide sensor that replaces the old 12MP module, delivering four times more detail in macro and wide-angle shots, while the proven 200MP main sensor and dual telephoto lenses remain. Performance is outstanding thanks to the custom Snapdragon 8 Elite for Galaxy chip, and Samsung's AI capabilities have matured with cross-app actions, smarter photo editing, and on-device processing. The 5,000mAh battery with 45W wired charging and Qi2 compatibility keeps you going through demanding days, and the S Pen remains tucked neatly into the body for note-taking and precision tasks. With seven years of updates, IP68 protection, and Gorilla Armor 2 glass, the S25 Ultra is built for users who want the absolute best Android phone available and plan to keep it for years.
Expert Rating
4.4
(6 reviews)
Price History
Tracking the best prices since 27 Apr 2026.
Samsung Galaxy S25 Ultra vs Galaxy S25 — Key Differences
| Feature | Samsung Galaxy S25 Ultra | Samsung Galaxy S25 |
|---|---|---|
| Display | 6.9" QHD+ AMOLED, 120Hz | 6.2" FHD+ AMOLED, 120Hz |
| Main camera | 200MP, f/1.7 | 50MP, f/1.8 |
| Ultrawide camera | 50MP | 12MP |
| Battery | 5,000mAh, 45W charging | 4,000mAh, 25W charging |
| S Pen | Yes, built-in | No |
| SIM-free price | Not available | From £579.00 |
Frequently Asked Questions
Is the Samsung Galaxy S25 Ultra worth buying?
Yes, the Samsung Galaxy S25 Ultra is the most complete Android phone available. It excels in performance, camera versatility, display quality, and software longevity. It is especially worthwhile if you value the S Pen, need a powerful camera with multiple zoom options, or want a phone that will remain fully supported for seven years.
How good is the Samsung Galaxy S25 Ultra camera?
The Samsung Galaxy S25 Ultra has one of the most versatile camera systems on any smartphone. It features a 200MP main sensor, a new 50MP ultrawide with dramatically improved detail, a 50MP 5x telephoto, and a 10MP 3x telephoto. It handles everything from macro photography to long-range zoom with excellent results, and LOG video support makes it suitable for professional video work.
Does the Samsung Galaxy S25 Ultra come with an S Pen?
Yes, the Samsung Galaxy S25 Ultra includes an S Pen that slots into a dedicated silo in the phone body. However, Samsung has removed Bluetooth functionality from the S Pen in this generation, which means remote shutter and gesture controls are no longer available. The S Pen still works fully for handwriting, note-taking, and on-screen precision tasks.
What is the battery life like on the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra houses a 5,000mAh battery that delivers excellent all-day performance even under heavy use. It supports 45W wired fast charging, 15W wireless charging with Qi2 magnetic compatibility, and 4.5W reverse wireless charging. The efficient Snapdragon 8 Elite chipset helps extend battery life compared to the S24 Ultra.
Should I upgrade from the Samsung Galaxy S24 Ultra to the S25 Ultra?
For most S24 Ultra owners, the S25 Ultra is a modest refinement rather than a must-have upgrade. The main improvements are the faster Snapdragon 8 Elite chip, the upgraded 50MP ultrawide camera, rounded corners for better comfort, and enhanced AI features. If your S24 Ultra still meets your needs, waiting for the S26 Ultra may make more sense.
Is the Samsung Galaxy S25 Ultra waterproof?
The Samsung Galaxy S25 Ultra carries an IP68 rating, meaning it can withstand submersion in up to 1.5 metres of fresh water for 30 minutes and is fully dust-resistant. The front is protected by Gorilla Armor 2 glass for added durability against drops and scratches.
Should I get the Samsung Galaxy S25 Ultra or the Samsung Galaxy S25?
The S25 Ultra justifies its premium with a 200MP main camera, 50MP ultrawide, built-in S Pen, larger 6.9-inch QHD+ display, and a 5,000mAh battery with 45W charging. The standard S25 shares the same Snapdragon 8 Elite chip but in a lighter 162g body with a 50MP main camera, and it saves you £450 at £799 SIM-free vs £1,249. Choose the S25 if you want flagship performance without paying for the camera and S Pen extras. Compare Samsung Galaxy S25 deals.
Samsung Galaxy S25 Ultra Specifications
Spec Scores
£700-£999 Phones · 71 phones
- Snapdragon 8 Elite
- Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
This phone
98%
Avg
78%
Best
100%
This phone
98%
Avg
45%
Best
100%
Based on calibrated CPU benchmark rankings (60%) and GFXBench GPU scores (40%). Apple chipsets included via editorial calibration since AnTuTu under-represents Apple's architecture.
- 6.9 inches
- 1440 x 3120 pixels
- LTPO, 120Hz, 2600 nits peak
This phone
100%
Avg
79%
Best
100%
This phone
100%
Avg
60%
Best
100%
Based on panel type (LTPO is the modern flagship gold standard), resolution, refresh rate, peak brightness, screen size, and HDR10+ / Dolby Vision support. Marketing peak-brightness claims are capped at 3500 nits to prevent inflation.
- Single camera setup
- 200 MP main camera
- 8K video recording
This phone
83%
Avg
58%
Best
86%
This phone
83%
Avg
39%
Best
90%
Based on main-sensor size (1-inch / 1/1.3" beats 1/2.0"), telephoto reach (periscope > 5x > 3x optical), image processing tier (Apple Pro, Pixel Pro, Galaxy Ultra, Honor Magic Pro, Xiaomi Ultra), pro video features (ProRes, Apple Log, Dolby Vision), camera-partnership branding (Leica, Hasselblad, Zeiss) and OIS. Older flagships are de-rated since image processing pipelines have advanced significantly each generation. Megapixel count is deliberately downweighted — it correlates poorly with real-world camera quality.
- 12 MP front camera
- 4K selfie video
This phone
55%
Avg
64%
Best
92%
This phone
55%
Avg
55%
Best
92%
Based on selfie megapixels and max selfie-video resolution.
- 5,000 mAh
- 45W wired, PD3.0, 65% in 30 min
This phone
72%
Avg
61%
Best
100%
This phone
72%
Avg
52%
Best
100%
Based on battery capacity (mAh) adjusted for platform efficiency calibrated against NotebookCheck, Tom's Guide, GSMArena and CNET reviewer tests. Apple A-series gets +45% (iOS process freezing + LTPO 1Hz + tuned panels make iPhone Pro Max outlast many 6500+ mAh Android phones in measured tests). Top Snapdragon / Dimensity flagships get +15%, budget chipsets are penalised −15% to −25% to reflect less efficient displays and looser background limits. Charging speed is excluded — see the separate Fast charging tag for that.
General
Dimensions
162.8 x 77.6 x 8.2
Weight
218 g
SIM
Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INT
Operating System
Android 15, up to 7 major upgrades, One UI 8
Radio
No
Body
Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold
Camera
Primary Camera Megapixels
200
Primary Camera Video
8K@24/30fs, 4K@30/60/120fs, 1080@30/60/120/240fs, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Selfie Camera Features
HDR, HDR10+
Primary Selfie Camera
12 , f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Video Resolution
4320
Selfie Video Resolution
4K@30/60fs, 1080@30fs
Display
Type
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Display Size
6.9
Display Resolution
1440 x 3120 pixels, 19.5:9 ratio (~498 ppi density)
Display Protection
Corning Gorilla Armor 2, Mohs level 6
CPU & Memory
Sound
Loudspeaker
Yes, with stereo speakers
3.5mm Jack
No
Connectivity & Data
2G
GSM 850 / 900 / 1800 / 1900
3G
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
5G
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
Network Speed
HSPA, LTE (CA), 5G
Network Technology
GSM / CDMA / HSPA / EVDO / LTE / 5G
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
5.4, A2DP, LE
USB
USB Type-C 3.2, DisplayPort 1.2, OTG
NFC
Yes
GPS
GPS, GLONASS, BDS, GALILEO, QZSS
Battery
Battery
5000
Charging
45W wired, PD3.0, 65% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
Other
Sensors
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer