Samsung Galaxy S25+: pay monthly plans on all networks

Unlimited data

We've analysed the unlimited data Galaxy S25+ contracts available on each UK mobile network and picked out the most competitive deal on each provider. Here's the state of play for April:

Our first pick would be this £54 a month deal from giffgaff with £25 to pay up front:

Unlimited minutes + Unlimited texts +  Always On data (5G) =  £54 a month, £25 up front (36‑month contract)
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🛈 giffgaff reserve the right to increase the cost of this phone's airtime plan annually with one month's notice

Or in second place, Three's £58.50 a month unlimited data plan here is a decent alternative:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £58.50 a month, £40 up front (36‑month contract)
See full deal

🛈 Increased to: £60.00 on April 1 2028.
Increased to: £61.50 on April 1 2029

None of the other networks offer the Samsung Galaxy S25+ with unlimited data. But there may be more combos of upfront cost, contract length and speed if you give our comparison tool further up the page a go.

Useful link: Compare all unlimited data deals above

giffgaff's Galaxy S25+ contracts currently start at £34.14 a month

Looking at their latest deals in April, if you want the Samsung Galaxy S25+ from giffgaff, they've currently got it in Silver Shadow only. And they've only got it in the 256GB memory version.

giffgaff sell the Samsung Galaxy S25+ on two contract lengths: 36 or 24 months but you can't get it on a contract with them via re-sellers like Carphone Warehouse, you have to join directly.

giffgaff's best Samsung Galaxy S25+ deals

✔ Best overall deal

The deal below is giffgaff's current most competitive plan for the Galaxy S25+:

Unlimited minutes + Unlimited texts +  150GB data (5G) =  £55.50 a month, £25 up front (24‑month contract)
See full deal

🛈 giffgaff reserve the right to increase the cost of this phone's airtime plan annually with one month's notice

✔ Unlimited data

For unlimited data with your Samsung Galaxy S25+ plan on giffgaff, this is the deal we think is the best value this April:

Unlimited minutes + Unlimited texts +  Always On data (5G) =  £68.50 a month, £25 up front (24‑month contract)
See full deal

🛈 giffgaff reserve the right to increase the cost of this phone's airtime plan annually with one month's notice

The monthly costs on giffgaff range between £34.14 - £78.50 according to the amount of minutes, texts and data you want. You're looking at paying £25 - £200 upfront too.

Useful link: Compare all giffgaff's Galaxy S25+ deals

Three have 1140 deals for the Galaxy S25+

Our latest search of their deals finds that Three currently have the Samsung Galaxy S25+ in Icy Blue, Mint, Navy and Silver Shadow. And there's a choice of two memory variants: 256GB and 512GB.

There's only one choice of contract length for the Galaxy S25+ on Three: 36 months and you can only get it from them directly, they don't offer contracts via Carphone Warehouse or similar re-sellers.

Three's best Samsung Galaxy S25+ deals

✔ Best overall deal

This is Three's current most-competitive plan for the Galaxy S25+, from our most recent comparison:

Unlimited minutes + Unlimited texts +  150GB data (5G) =  £39.50 a month, £40 up front (36‑month contract)
See full deal

🛈 Increased to: £41.00 on April 1 2028.
Increased to: £42.50 on April 1 2029

✔ Unlimited data

You can get the Samsung Galaxy S25+ with unlimited data on Three. Here's their current best deal for that:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £58.50 a month, £40 up front (36‑month contract)
See full deal

🛈 Increased to: £60.00 on April 1 2028.
Increased to: £61.50 on April 1 2029

Price-wise, Three have contracts priced ranging between £26.31 - £75 a month (with £40 - £635 upfront), depending on the minutes, texts and data you want.

Useful link: Compare all Three's Galaxy S25+ deals