Samsung · contract deals
Galaxy S25 Plus deals
We compared 26 Galaxy S25 Plus contracts across 3 networks and ranked them by what you really pay over 24 months — upfront, every monthly payment and each April rise.
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Is the lowest monthly price the best deal?
Not here. The lowest monthly price (£20 on Three) comes with £389 upfront. The cheapest deal overall is on O2.
What will April price rises add?
On the cheapest O2 deal, about £60 over 24 months for a contract started this month. The table below adds the rise for every network.
Should I buy it outright instead?
Not today. SIM-free plus a cheap SIM costs £308 more over two years than the cheapest contract.
- £199 upfront
- then £24 a month
- 200GB data · 24 months
- April rises: about +£60
24-month total £835
Get this dealO2 review →The Galaxy S25 Plus deal with the lowest total cost over 24 months, April rises included — live.
The cheapest Galaxy S25 Plus contract today is on O2 at £835 over 24 months (£199 upfront, £24 a month), or about £835 once April rises are added. The best deal on Three costs £89.20 more over the same period. Buying SIM-free and adding a 30-day SIM costs £1,143.
Prices checked 28 October 2026 · rises estimated for a contract starting this month · How we compare
Galaxy S25 Plus on every network
The cheapest 24-month deal on each network, sorted by the true total — the headline total plus the April rises the network has announced.
| Network | Monthly | Upfront | 24-month total | April rises (est.) | True total | |
|---|---|---|---|---|---|---|
| £24 | £199 | £835 | +£60 | £835 | View |
 | £30 | £99 | £879 | +£60 | £879 | View |
 | £20 | £389 | £924.20 | +£55.20 | £924.20 | View |
Rises use each network’s announced amount in pounds (Tesco Mobile about 6%). Sky Mobile’s rise isn’t fixed in the contract, so it isn’t included.
Contract or buy outright?
The contract is cheaper by £308
Cheapest contract
£835
- O2, 24 months
- £199 + 24 × £24
- April rises: +£60
SIM-free + SIM only
£1,143
- Phone from £999 (256GB)
- SMARTY 18GB at £6 × 24
- No price rise, leave any month
Outright prices from retailers via our data partner. You keep the phone either way.
Our take on the Galaxy S25 Plus
The cheapest way to get the Galaxy S25 Plus on contract today is on O2: £199 upfront and £24 a month with 200GB of data, £835 over 24 months. At the other end of our table, Three’s best deal works out £89.20 dearer once rises are counted — the same phone, so the network choice alone is worth that much.
O2 adds £2.50 a month every April, so a contract started now costs about £60 more than the headline figure: £835 in all. Networks without an annual rise are worth a look if the gap is small.
Buying the Galaxy S25 Plus SIM-free costs from £999. Pair it with a SMARTY 30-day SIM at £6 a month and two years cost £1,143, £308 more than the cheapest contract. Here retailers discount the handset to win the airtime, so the contract wins on price.
The Galaxy S25 Plus has a 6.7-inch screen, a 4,900 mAh battery, a weight of 190 g. It is on sale with 256GB of storage in 2 colours. It was released in January 2025.
Pick it if…
- You want it for £24 a month on O2
- You want to pay little upfront — from £29 on O2
Skip it if…
- Your current phone still works — SIM only from £6 a month is far cheaper
- You can’t pay £199 upfront — the lowest-upfront deal is £29 with £32 a month
Galaxy S25 Plus key specs
| Screen | 6.7 inches |
|---|---|
| Battery | 4,900 mAh |
| Storage | 256GB |
| Weight | 190 g |
| Size | 158 × 76 × 7 mm |
| Colours | Blue, Green |
| Released | January 2025 |
Specifications from our data partner’s catalogue.
All Galaxy S25 Plus deals, live
FAQ
Galaxy S25 Plus questions
How much is the Galaxy S25 Plus on contract?
The lowest total cost we found today is £835 over 24 months on O2: £199 upfront and £24 a month, plus about £60 in April price rises.
What is the cheapest monthly price for the Galaxy S25 Plus?
£20 a month on Three, with £389 to pay upfront. A low monthly price usually means a bigger upfront payment, so compare the 24-month total.
Is it cheaper to buy the Galaxy S25 Plus outright?
Buying it SIM-free from £999 and adding a SMARTY SIM at £6 a month costs £1,143 over two years — £308 more than the cheapest contract including price rises.
What storage and colours does the Galaxy S25 Plus come in?
Storage: 256GB. Colours on sale now: Blue, Green.