Samsung Galaxy S25 Deals on O2
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The cheapest contract deal today is £21 a month with a £59 upfront cost, with a 24-month contract term. The total, including all airtime and device payments and in-contract price increases, is £618.00. The plan comes with 100GB data on O2.
The cheapest contract deal today is £21 a month with a £59 upfront cost, with a 24-month contract term. The total, including all airtime and device payments and in-contract price increases, is £618.00. The plan comes with 100GB data on O2.
Trending Deal
Samsung Galaxy S25
£21 a month, £59 upfront.
24 Months
128GB
Silver Shadow
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £23.50 on 1 April 2027. Then to £26.00 on 1 April 2028.
24 Months
128GB
Mint
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £23.50 on 1 April 2027. Then to £26.00 on 1 April 2028.
24 Months
128GB
Icy Blue
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £23.50 on 1 April 2027. Then to £26.00 on 1 April 2028.
24 Months
128GB
Navy
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £23.50 on 1 April 2027. Then to £26.00 on 1 April 2028.
24 Months
128GB
Icy Blue
200GB
Data
Unlimited
Unlimited
Monthly payment will increase to £25.50 on 1 April 2027. Then to £28.00 on 1 April 2028.
24 Months
128GB
Mint
200GB
Data
Unlimited
Unlimited
Monthly payment will increase to £25.50 on 1 April 2027. Then to £28.00 on 1 April 2028.
24 Months
128GB
Silver Shadow
200GB
Data
Unlimited
Unlimited
Monthly payment will increase to £25.50 on 1 April 2027. Then to £28.00 on 1 April 2028.
24 Months
128GB
Navy
200GB
Data
Unlimited
Unlimited
Monthly payment will increase to £25.50 on 1 April 2027. Then to £28.00 on 1 April 2028.
24 Months
128GB
Navy
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £24.50 on 1 April 2027. Then to £27.00 on 1 April 2028.
24 Months
128GB
Mint
100GB
Data
Unlimited
Unlimited
Monthly payment will increase to £24.50 on 1 April 2027. Then to £27.00 on 1 April 2028.
Price History
The lowest total contract cost we've tracked is £441.25 (25 April 2026). Today's best is £618, £176.75 above that low.
Prices tracked since 21 March 2026.
Overview
Tech Specs
- Release Date
- 7 February 2025
- Display Size
- 6.2"
- Screen Type
- Dynamic LTPO AMOLED 2X
- Resolution
- 1080 x 2340
- Chipset
- Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
- Battery
- 4,000 mAh
- Dimensions
- 146.9 x 70.4 x 7.2 mm
- Weight
- 162 grams
- Rear Camera
- 50 Megapixels
- Front Camera
- 12 Megapixels
- SIM Type
- nano-SIM and e-SIM
- Wi-Fi
- 802.11 a/b/g/n/ac/6e
- Bluetooth
- 5.4, A2DP, LE
- Connectivity
- Up to 5G
Other Galaxy S25 Models
Samsung Galaxy S25 Edge
|
Samsung Galaxy S25 Enterprise Edition
|
Samsung Galaxy S25 FE
|
Samsung Galaxy S25 Ultra
|
Samsung Galaxy S25+
|
|
|---|---|---|---|---|---|
| Expert Rating |
3.8 11 reviews |
— |
4.0 10 reviews |
4.4 12 reviews |
4.0 10 reviews |
| Release Date | 30 May 2025 | 1 February 2025 | 4 September 2025 | 7 February 2025 | 7 February 2025 |
| Screen | 6.7" | 6.2" | 6.7" | 6.8" | 6.7" |
| Camera | 200 Megapixels | 50 Megapixels | 50 Megapixels | 200 Megapixels | 50 Megapixels |
| Chipset | Qualcomm SM8750-3-AB Snapdragon 8 Elite (3 nm) | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) | Exynos 2400 (4 nm) | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) |
| Battery | 3,900 mAh | 4,000 mAh | 4,900 mAh | 5,000 mAh | 4,900 mAh |
| Storage | 256GB, 512GB | 128GB | 128GB, 256GB, 512GB | 256GB, 512GB, 1TB | 256GB, 512GB |
| Contracts |
£25.79/mo
£29.00 upfront |
— |
£22.29/mo
£49.00 upfront |
£33.79/mo
£29.00 upfront |
£69.83/mo
£30.00 upfront |
| SIM-free | £454.99 | £819.00 | £334.99 | £569.99 | £479.99 |
| Compare | Compare | Compare | Compare | Compare |
Frequently Asked Questions
What type of deal do I need?
Contracts
Contract
deals are meant for new customers switching from a different network.
We currently have 354 new customer contracts for
O2 Samsung Galaxy S25.
Starting from £21.00 per month with
an upfront cost of £59.00
with a 24-month contract term on O2.
If you stream, hotspot or use lots of data, compare unlimited data contracts for Samsung Galaxy S25.
Can I save money by buying Samsung Galaxy S25 outright with a cheap O2 SIM?
No - a contract works out £332.99 cheaper over 24 months.
- Cheapest contract: £618.00
- SIM-free route: £374.99 handset + cheapest 3GB SIM at £24.00/mo = £950.99
Note: The SIM-free price is for a refurbished handset (new costs £224.01 more). Comparing new-for-new, the result shifts from £332.99 more expensive to £557.00 more expensive.
How about buying outright, but with an equivalent O2 SIM-only plan?
Once you match the cheapest contract's 100GB data, the contract comes out ahead - by £500.99 over 24 months.
- Contract deal: £618.00
- Buy outright: £374.99 handset + a 100GB SIM at £31.00/mo = £1118.99
Note: The SIM-free price is for a refurbished handset (new costs £224.01 more). Comparing new-for-new, the result shifts from £500.99 more expensive to £725.00 more expensive.
Is Samsung Galaxy S25 available on O2 with unlimited data?
The cheapest unlimited data deal costs £72.00 per month on a 12-month contract with O2, with an upfront cost of £30.00.
Over the full term, the total cost is £906.50, which is £288.50 more expensive than the overall cheapest contract deal.
How much extra is Samsung Galaxy S25 on O2 vs the market cheapest equivalent deal?
On O2, the cheapest total cost for this handset is £618.00, which is currently the same as the market-wide cheapest equivalent deal.
Can I keep my number?
To keep your number when switching to a new contract, text PAC to 65075 from your current SIM to receive a PAC code valid for 30 days. If you enter this code during checkout, your new network will manage the switch. The switch will occur the next working day, automatically ending your old contract.
Check out our Definitive PAC Code Guide for everything you need to know - common mistakes, tips, and FAQs.
How do I order?
After you choose the plan with the features that suit you best, click the "Get Deal" button on the deal card. You'll be transferred to the retailer's website where you can place your order. Any personal details you enter will handled by that retailer and will be processed based on their privacy policy - we don't see or process your data.
As a price comparison service we receive data feeds directly from our partered retailers. We try to ensure all prices and plan benefits are correct, but please check the full details of the deal you add to the basket before ordering as errors in our data feeds may occasionally occur.
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