Samsung · contract deals
Galaxy S23 deals
We compared 52 Galaxy S23 contracts across 4 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 (£15 on Vodafone) comes with £209 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?
Yes, if you can pay £399 today: SIM-free plus a £6 SIM saves about £16 over two years.
- £19 upfront
- then £20 a month
- 100GB data · 24 months
- April rises: about +£60
24-month total £559
Get this dealO2 review →The Galaxy S23 deal with the lowest total cost over 24 months, April rises included — live.
The cheapest Galaxy S23 contract today is on O2 at £559 over 24 months (£19 upfront, £20 a month), or about £559 once April rises are added. The best deal on Three costs £101.20 more over the same period. Buying SIM-free and adding a 30-day SIM costs £543.
Prices checked 28 October 2026 · rises estimated for a contract starting this month · How we compare
Galaxy S23 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 | |
|---|---|---|---|---|---|---|
| £20 | £19 | £559 | +£60 | £559 | View |
 | £20.99 | £19 | £565.96 | +£43.20 | £565.96 | View |
 | £22 | £19 | £607 | +£60 | £607 | View |
 | £24 | £29 | £660.20 | +£55.20 | £660.20 | 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?
Buying outright saves £16
Cheapest contract
£559
- O2, 24 months
- £19 + 24 × £20
- April rises: +£60
SIM-free + SIM only
£543
- Phone from £399 (128GB)
- 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 S23
The cheapest way to get the Galaxy S23 on contract today is on O2: £19 upfront and £20 a month with 100GB of data, £559 over 24 months. At the other end of our table, Three’s best deal works out £101.20 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: £559 in all. Networks without an annual rise are worth a look if the gap is small.
Buying the Galaxy S23 SIM-free costs from £399. Pair it with a SMARTY 30-day SIM at £6 a month and two years cost £543, £16 less than the cheapest contract. If you can pay upfront, that is the cheaper route — and you can change SIM any month.
The Galaxy S23 has a 6.1-inch screen, a 3,900 mAh battery, a weight of 168 g. It is on sale with 128GB of storage in 2 colours. It was released in February 2023.
Pick it if…
- You want it for £20 a month on O2
- You can pay upfront — SIM-free plus SIM only saves about £16
- You want to pay little upfront — from £0 on iD Mobile
Skip it if…
- Your current phone still works — SIM only from £6 a month is far cheaper
- You want the latest model — the Galaxy S23 launched in 2023
Galaxy S23 key specs
| Screen | 6.1 inches |
|---|---|
| Battery | 3,900 mAh |
| Storage | 128GB |
| Weight | 168 g |
| Size | 71 × 146 × 8 mm |
| Colours | Black, White |
| Released | February 2023 |
Specifications from our data partner’s catalogue.
All Galaxy S23 deals, live
FAQ
Galaxy S23 questions
How much is the Galaxy S23 on contract?
The lowest total cost we found today is £559 over 24 months on O2: £19 upfront and £20 a month, plus about £60 in April price rises.
What is the cheapest monthly price for the Galaxy S23?
£15 a month on Vodafone, with £209 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 S23 outright?
Buying it SIM-free from £399 and adding a SMARTY SIM at £6 a month costs £543 over two years — £16 less than the cheapest contract including price rises.
What storage and colours does the Galaxy S23 come in?
Storage: 128GB. Colours on sale now: Black, White.