Cheapest right now: £11.95/mo on Talkmobile from Fonehouse with £295.00 upfront.
Buy outright from £449.99 (O2)
Samsung Galaxy S25
4 retailers · 6 networks · 128GB / 256GB / 512GB
At a glance. The Samsung Galaxy S25 is currently sold on contract by Fonehouse, Mozillion, O2 and iD Mobile, with airtime from Mozillion, O2, Talkmobile, Three, Vodafone and iD Mobile. It is available in 3 storage sizes (128GB, 256GB, 512GB); larger sizes add to the price, so pick the smallest you can live with. The cheapest deal by effective monthly cost is £11.95 a month with £295.00 upfront over 24 months on Talkmobile, which works out at about £24.24 a month all in. If you would rather buy it outright, the lowest SIM-free price we track is £449.99 from O2 — worth comparing against the contracts above, paired with a SIM-only plan. 85 of the deals are for refurbished handsets, which are usually noticeably cheaper; use the condition filter to compare new and refurbished separately. Key specs: 6.2" dynamic ltpo amoled 2x, a Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) chip, IP68 water resistance.
The headline trap
The lowest monthly price for this phone is £8.00 — but it comes with £485 to pay upfront.
Cheapest-lookingFonehouse
Advertised£8.00/mo
Upfront£485
Whole bill, 24m£677
£28.21/mo really
Actually cheapest
Genuinely cheapestFonehouse
Monthly£11.95/mo
Upfront£295
Whole bill, 24m£581.80
£24.24/mo really
Choosing the cheapest-looking deal would cost you £95.24 more over the contract.
Contract or buy outright?
The cheapest new 128GB contract, against buying the same phone outright and adding the cheapest SIM plan with at least 15GB of data, over 24 months.
Assumes the SIM plan price (iD Mobile sim only, 25GB, rolling monthly) stays the same for the whole period; contracts may also rise each year. Add price rises or cashback in the calculator.
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