Samsung Galaxy S26 Ultra: explore UK contract deals

No upfront costs

We've done a big comparison of each network's contracts with no upfront costs for the Samsung Galaxy S26 Ultra this May and narrowed it down to a small range of different data plans. Here are the results:

Have a look at VOXI's 60GB deal below, for a small amount of data with nothing to pay up front:

Unlimited minutes + Unlimited texts +  60GB data (5G) =  £49.20 a month, £0 up front (36‑month contract)
See full deal

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

Useful link: Compare all no upfront cost deals above

Unlimited data

We've analysed the unlimited data Galaxy S26 Ultra contracts available on each UK mobile network and picked out the most competitive deal on each provider. Here's the state of play for May:

Our first pick would be this £44.99 a month deal from iD Mobile with £59 to pay up front:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £44.99 a month, £59 up front (24‑month contract)
See full deal

🛈 Increased to: £46.49 on April 1 2028.
Increased to: £47.99 on April 1 2029

Or giffgaff's unlimited data deal below is our second-placed choice at £51.78 a month:

Unlimited minutes + Unlimited texts +  Always On data (5G) =  £51.78 a month, £25 up front (36‑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

Then it's Vodafone's unlimited data plan here:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £48 a month, £130 up front (24‑month contract)
See full deal

🛈 Increased to: £50.50 on April 1 2027.
Increased to: £53.00 on April 1 2028

Next is this from Three:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £54 a month, £50 up front (36‑month contract)
See full deal

🛈 Increased to: £55.50 on April 1 2028.
Increased to: £57.00 on April 1 2029

And finally, it's O2, whose £71.69 a month unlimited data contract below we find the least competitive:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £71.69 a month, £30 up front (36‑month contract)
See full deal

🛈 Monthly airtime plan price will increase each April by the Retail Price Index rate of inflation published in February + 3.9%

And that's it for networks offering the Samsung Galaxy S26 Ultra with unlimited data. There may be more combos of data speed, contract length and upfront costs though, so use our comparison tool further at the top.

Useful link: Compare all unlimited data deals above

giffgaff offer 432x Galaxy S26 Ultra deals starting from £31.92

From our most recent check, the Samsung Galaxy S26 Ultra is currently available in Black, White, Sky Blue and Cobalt Violet on giffgaff. They have it in two choices of memory: 256GB and 512GB.

You've got two contract length choices of 36 or 24 months for the Galaxy S26 Ultra on giffgaff but it's only possible to get it directly with them - none of the re-sellers like Carphone Warehouse offer giffgaff deals for it.

giffgaff's best Samsung Galaxy S26 Ultra deals

✔ Best overall deal

We think this is currently giffgaff's most competitive plan for the Galaxy S26 Ultra:

Unlimited minutes + Unlimited texts +  75GB data (5G) =  £36.78 a month, £25 up front (36‑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

If you want unlimited data with your Samsung Galaxy S26 Ultra on giffgaff, here's the best offer at the moment:

Unlimited minutes + Unlimited texts +  Always On data (5G) =  £51.78 a month, £25 up front (36‑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 £31.92 - £82.25 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 S26 Ultra deals

iD Mobile's Galaxy S26 Ultra deals start at £39.99 a month

On iD Mobile, our latest search of all their deals found that the Samsung Galaxy S26 Ultra is available in Black, Sky Blue, Cobalt Violet and White at the moment. Memory-wise, they've got the 256GB, 512GB and 1TB versions.

iD Mobile only offer the Galaxy S26 Ultra on 24‑month contracts but you can get it on their network by joining direct or via the Mobiles.co.uk and Carphone Warehouse re-sellers.

iD Mobile's best Samsung Galaxy S26 Ultra deals

✔ Best overall deal

Here's the iD Mobile Galaxy S26 Ultra deal that stacks up best against other providers:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £44.99 a month, £59 up front (24‑month contract)
See full deal

🛈 Increased to: £46.49 on April 1 2028.
Increased to: £47.99 on April 1 2029

✔ Unlimited data

The best Samsung Galaxy S26 Ultra plan with unlimited data from iD Mobile is the same as the one we've chosen as their best overall deal above.

Price-wise, iD Mobile have contracts priced ranging between £39.99 - £69.99 a month (with £19 - £439 upfront), depending on the minutes, texts and data you want.

Useful link: Compare all iD Mobile's Galaxy S26 Ultra deals

O2: get the Galaxy S26 Ultra from £58.69 a month

Looking at their latest deals in May, if you want the Samsung Galaxy S26 Ultra from O2, they've currently got it in Black, Sky Blue, Cobalt Violet and White. And they've got it in the 256GB, 512GB and 1TB memory versions.

The Galaxy S26 Ultra comes on three lengths of contract with O2 (36, 24 or 12 months) but you can't get it on a contract with them via re-sellers like Carphone Warehouse, you have to join directly.

O2's best Samsung Galaxy S26 Ultra deals

✔ Best overall deal

This is the most competitive O2 plan for the Galaxy S26 Ultra, compared against other networks:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £89.04 a month, £30 up front (24‑month contract)
See full deal

🛈 Monthly airtime plan price will increase each April by the Retail Price Index rate of inflation published in February + 3.9%

✔ Unlimited data

For unlimited data with your Samsung Galaxy S26 Ultra, O2's best deal is the same as the one we've chosen as their best overall offer above.

Their contracts are priced between £58.69 - £185.07 a month, depending on amount of minutes, texts and data in the plan. And you'll pay £30 up front too.

Useful link: Compare all O2's Galaxy S26 Ultra deals

Three's Galaxy S26 Ultra contracts currently start at £28.14 a month

Our latest search of their deals finds that Three currently have the Samsung Galaxy S26 Ultra in Black, Sky Blue, Cobalt Violet and White. And there's a choice of three memory variants: 256GB, 512GB and 1TB.

Three sell the Samsung Galaxy S26 Ultra on one contract length: 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 S26 Ultra deals

✔ Best overall deal

Here's the Three deal we think is the best value at the moment for the Galaxy S26 Ultra:

Unlimited minutes + Unlimited texts +  150GB data (5G) =  £43 a month, £50 up front (36‑month contract)
See full deal

🛈 Increased to: £44.50 on April 1 2028.
Increased to: £46.00 on April 1 2029

✔ Unlimited data

You can get the Samsung Galaxy S26 Ultra with unlimited data on Three. Here's their current best deal for that:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £54 a month, £50 up front (36‑month contract)
See full deal

🛈 Increased to: £55.50 on April 1 2028.
Increased to: £57.00 on April 1 2029

On a pay monthly deal, you're looking at prices between £28.14 - £84.50 per month on Three, depending on the minutes, texts and data you want. And that's with £50 - £875 upfront costs.

Useful link: Compare all Three's Galaxy S26 Ultra deals

Vodafone have 348 deals for the Galaxy S26 Ultra

Looking at Vodafone's current pay monthly contracts for May, they have the Samsung Galaxy S26 Ultra in Sky Blue, Cobalt Violet, White and Black. And they stock the 256GB, 512GB and 1TB versions of it.

There's two choices of contract length for the Galaxy S26 Ultra on Vodafone: 24 or 36 months and there are contracts for it via the re-sellers Mobiles.co.uk, or you can join directly.

Vodafone's best Samsung Galaxy S26 Ultra deals

✔ Best overall deal

The deal below is Vodafone's current most competitive plan for the Galaxy S26 Ultra:

Unlimited minutes + Unlimited texts +  Unlimited data (5G) =  £48 a month, £130 up front (24‑month contract)
See full deal

🛈 Increased to: £50.50 on April 1 2027.
Increased to: £53.00 on April 1 2028

✔ Unlimited data

Vodafone's best unlimited data plan for the Samsung Galaxy S26 Ultra is the same as our overall favourite deal above.

Depending on the amount of minutes, texts and data you want in your deal, monthly costs on Vodafone range between £34 - £97.25 (with £10 - £365 upfront costs).

Useful link: Compare all Vodafone's Galaxy S26 Ultra deals

VOXI's Galaxy S26 Ultra deals start from £49.20 a month

From our most recent check, the Samsung Galaxy S26 Ultra is currently available in Black and Cobalt Violet on VOXI. They have it in three choices of memory: 256GB, 512GB and 1TB.

You've only got one contract length choice of 36 months for the Galaxy S26 Ultra on VOXI and it's only possible to get it directly with them - none of the re-sellers like Carphone Warehouse offer VOXI deals for it.

VOXI's best Samsung Galaxy S26 Ultra deals

✔ Best overall deal

This is VOXI's current most-competitive plan for the Galaxy S26 Ultra, from our most recent comparison:

Unlimited minutes + Unlimited texts +  60GB data (5G) =  £49.20 a month, £0 up front (36‑month contract)
See full deal

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

✖ Unlimited data

If you want unlimited data with your Samsung Galaxy S26 Ultra, VOXI aren't currently an option, as they don't offer any plans with it.

The monthly costs on VOXI range between £49.20 - £62 according to the amount of minutes, texts and data you want. But none of the deals have any upfront costs.

Useful link: Compare all VOXI's Galaxy S26 Ultra deals