Phones / Samsung / Galaxy S25 Ultra

Samsung Galaxy S25 Ultra
Cheapest right now: £34.22/mo on O2 from O2 with £30.00 upfront.

Buy outright from £593 (Mozillion)

Narrow it down

Reset

Samsung Galaxy S25 Ultra

3 retailers · 3 networks · 256GB / 512GB / 1TB

Key specs

Screen6.8"
DisplayDynamic LTPO AMOLED 2X
Resolution1440 x 3120
ChipsetQualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
Front camera12 Megapixels
Water resistanceIP68 - Dust and water resistant over 1.5 meter and 30 minutes
Weight219g
Dimensions162.8 x 77.6 x 8.2 mm

Contract deals for the Galaxy S25 Ultra

Sort by Effective monthly Monthly price Upfront cost Total cost Most data

242 deals match.

Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£39.79/mo
£149.00 upfront
£46.00/mo effective · £1,103.96 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£33.54/mo
£299.00 upfront
£46.00/mo effective · £1,103.96 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£43.96/mo
£49.00 upfront
£46.00/mo effective · £1,104.04 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£37.71/mo
£199.00 upfront
£46.00/mo effective · £1,104.04 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£45.63/mo
£9.00 upfront
£46.01/mo effective · £1,104.12 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£41.88/mo
£99.00 upfront
£46.01/mo effective · £1,104.12 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
512GB · Titanium Whitesilver, Titanium Grey, Titanium Black, Titanium Silverblue
Data100GB
MinutesUnlimited
TextsUnlimited
Term24 mths
£35.63/mo
£249.00 upfront
£46.01/mo effective · £1,104.12 total
See deal at Mozillion
O2
Samsung Galaxy S25 Ultra
512GB · Pre-owned, Grade A · Grey, Black, Blue, Silver
Data30GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Refurbished 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile
Device plan £21.39/mo for 36 months, airtime £35.99/mo for 24 months
£57.38/mo
£30.00 upfront
£46.22/mo effective · £1,663.80 total
See deal at O2
O2
Samsung Galaxy S25 Ultra
512GB · Pre-owned, Grade A · Silver, Black, Grey, Blue
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term36 mths
Unlimited data 5G Refurbished 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile
Device plan £21.39/mo for 36 months, airtime £37.00/mo for 24 months
£58.39/mo
£30.00 upfront
£46.89/mo effective · £1,688.04 total
See deal at O2
O2
Samsung Galaxy S25 Ultra
1024GB · Pre-owned, Grade A · Grey, Silver
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Refurbished 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile
Device plan £20.00/mo for 36 months, airtime £40.99/mo for 24 months
£60.99/mo
£30.00 upfront
£48.16/mo effective · £1,733.76 total
See deal at O2
O2
Samsung Galaxy S25 Ultra
256GB · Pre-owned, Grade A · Silver, Black, Grey, Blue
Data125GB
MinutesUnlimited
TextsUnlimited
Term24 mths
5G Refurbished 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile
£47.83/mo
£30.00 upfront
£49.08/mo effective · £1,177.92 total
See deal at O2
O2
Samsung Galaxy S25 Ultra
512GB · Pre-owned, Grade A · Grey, Blue, Silver, Black
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Refurbished 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile
Device plan £21.39/mo for 36 months, airtime £40.99/mo for 24 months
£62.38/mo
£30.00 upfront
£49.55/mo effective · £1,783.80 total
See deal at O2
Mozillion (EE network)
Samsung Galaxy S25 Ultra
256GB · Titanium Whitesilver, Titanium Grey, Titanium Black
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term24 mths
Unlimited data
£48.79/mo
£29.00 upfront
£50.00/mo effective · £1,199.96 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
256GB · Titanium Whitesilver, Titanium Grey, Titanium Black
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term24 mths
Unlimited data
£43.79/mo
£149.00 upfront
£50.00/mo effective · £1,199.96 total
See deal at Mozillion
Mozillion (EE network)
Samsung Galaxy S25 Ultra
256GB · Titanium Whitesilver, Titanium Grey, Titanium Black
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term24 mths
Unlimited data
£37.54/mo
£299.00 upfront
£50.00/mo effective · £1,199.96 total
See deal at Mozillion

Buy the Galaxy S25 Ultra outright

Pair it with a SIM-only plan — usually the cheapest way to own a phone over two years.

Other Samsung phones

Samsung Galaxy S26 Ultra
Samsung
Galaxy S26 Ultra
5G 4 retailers
From £9.00/mo 1024 deals · or £820 outright
Samsung Galaxy Z Flip8
Samsung
Galaxy Z Flip8
5G 4 retailers
From £10.00/mo 1007 deals · or £880 outright
Samsung Galaxy S26+
Samsung
Galaxy S26+
5G 4 retailers
From £8.00/mo 923 deals · or £700 outright
Samsung Galaxy Z Fold8 Ultra
Samsung
Galaxy Z Fold8 Ultra
5G 4 retailers
From £11.95/mo 844 deals · or £1,750 outright