Phones / Samsung / Galaxy S24 Ultra

Samsung Galaxy S24 Ultra
Cheapest right now: £35.61/mo on O2 from O2 with £30.00 upfront.

Buy outright from £699.99 (O2)

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Samsung Galaxy S24 Ultra

1 retailer · 1 network · 256GB / 512GB / 1TB

At a glance. The Samsung Galaxy S24 Ultra is currently sold on contract by O2, on O2. It is available in 3 storage sizes (256GB, 512GB, 1TB); larger sizes add to the price, so pick the smallest you can live with. The cheapest deal by effective monthly cost is £35.61 a month with £30.00 upfront over 36 months on O2, which works out at about £30.78 a month all in. If you would rather buy it outright, the lowest SIM-free price we track is £699.99 from O2 — worth comparing against the contracts above, paired with a SIM-only plan. 72 of the deals are for refurbished handsets, which are usually noticeably cheaper; use the condition filter to compare new and refurbished separately. Key specs: 6.8" dynamic ltpo amoled 2x, a Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm) chip, IP68 water resistance.

Key specs

Screen6.8"
DisplayDynamic LTPO AMOLED 2X
Resolution1440 x 3088
ChipsetQualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
Front camera12 Megapixels
Water resistanceIP68 - Dust and water resistant over 1.5 meter and 30 minutes
Weight232g
Dimensions162.3 x 79 x 8.6 mm

Every contract for the Galaxy S24 Ultra, ranked by true cost

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

72 deals match. Prices last checked 29 October 2026.

O2O2
Samsung Galaxy S24 Ultra
256GB · Grey, Black, Yellow, Purple
Data30GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £17.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £17.00×24£408
True cost£1,107.96
£30.78/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Black, Grey, Purple, Yellow
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £22.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £22.00×24£528
True cost£1,227.96
£34.11/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Grey, Purple
Data5GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £24.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £24.00×24£576
True cost£1,275.96
£35.44/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Yellow, Purple, Black, Grey
Data30GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £25.99/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £25.99×24£623.76
True cost£1,323.72
£36.77/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Yellow, Purple, Black, Grey
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term36 mths
Unlimited data 5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £27.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £27.00×24£648
True cost£1,347.96
£37.44/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
1TB · Black
Data5GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.22/mo for 36 months, airtime £24.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.22×36£763.92
Airtime £24.00×24£576
True cost£1,369.92
£38.05/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
512GB · Black, Purple, Grey, Yellow
Data5GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.39/mo for 36 months, airtime £24.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.39×36£770.04
Airtime £24.00×24£576
True cost£1,376.04
£38.22/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
1TB · Black
Data30GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.22/mo for 36 months, airtime £27.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.22×36£763.92
Airtime £27.00×24£648
True cost£1,441.92
£40.05/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Purple, Yellow, Grey, Black
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £30.99/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £30.99×24£743.76
True cost£1,443.72
£40.10/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
512GB · Yellow, Grey, Black, Purple
Data30GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.39/mo for 36 months, airtime £27.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.39×36£770.04
Airtime £27.00×24£648
True cost£1,448.04
£40.22/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Grey, Purple
Data5GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £32.99/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £32.99×24£791.76
True cost£1,491.72
£41.44/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
1TB · Black
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.22/mo for 36 months, airtime £32.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.22×36£763.92
Airtime £32.00×24£768
True cost£1,561.92
£43.39/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
256GB · Black, Purple, Yellow, Grey
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term36 mths
Unlimited data 5G Pre-owned, Grade A 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £18.61/mo for 36 months, airtime £35.99/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £18.61×36£669.96
Airtime £35.99×24£863.76
True cost£1,563.72
£43.44/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
512GB · Yellow, Purple, Grey, Black
Data125GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 3 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.39/mo for 36 months, airtime £32.00/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.39×36£770.04
Airtime £32.00×24£768
True cost£1,568.04
£43.56/mo real
Headline is honest See deal at O2
O2O2
Samsung Galaxy S24 Ultra
1TB · Black
Data5GB
MinutesUnlimited
TextsUnlimited
Term36 mths
5G Pre-owned, Grade A 6 months Free Disney+ O2 Priority Unlocked Phones Charge to mobile

Device plan £21.22/mo for 36 months, airtime £32.99/mo for 24 months

The whole bill36 months
Upfront£30.00
Device £21.22×36£763.92
Airtime £32.99×24£791.76
True cost£1,585.68
£44.05/mo real
Headline is honest See deal at O2

Buy the Galaxy S24 Ultra outright

Pair it with a SIM-only plan. Whether that beats a contract depends on the phone — see the verdict above.

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