Uses Three Mobile's Network
Unlimited 5G data
24 month contract
£27.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£719.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
Unlimited 5G data
24 month contract
£18.99 a monthuntil April 2026then price rises every April in contract by £1.50£29.00 upfront costPrice details
£523.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
500 GB of 5G data
24 month contract
£18.99 a monthuntil April 2026then price rises every April in contract by £1.50No upfront costPrice details
£494.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
500 GB of 5G data
24 month contract
£18.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£503.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
100 GB of 5G data
24 month contract
£24.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£647.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
250 GB of 5G data
24 month contract
£25.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£671.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
25 GB of 5G data
24 month contract
£23.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£623.76 total cost
Includes roaming in 50 destinations
Uses Three Mobile's Network
10 GB of 5G data
24 month contract
£22.99 a monthuntil April 2026then price rises every April in contract by £1.50£9.00 upfront costPrice details
£599.76 total cost
Includes roaming in 50 destinations
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Until 2024, many mobile networks have increased contract prices in line with inflation. Starting in January 2025, Ofcom will introduce a ban on inflation-linked price hikes for new contracts. Future price changes will need to be set and fully disclosed in pounds and pence.
Launched in 2021, the Samsung Galaxy S21 is the baseline model in the S21 lineup. It doesn't pack the punch of the Ultra or the size of the Plus, but it still makes for a great smartphone.
6.2 inch display with an impressive 120Hz refresh rate
A camera lineup of 64 MP main & 12 MP & 12 MP. Which is higher MP than the iPhone 16
Large 4000 mAh battery size for all day use
The Samsung Galaxy S21 is no longer available for purchase directly from Samsung, but you can still get one on a contract deal from many of the UK's top mobile networks.
Priced at £769 when it was launched back in 2021, the Samsung Galaxy S21 usually retails for around £450 on a contract with your data and calls included.
Looking at the Galaxy S21 compared to the S22, S23, and S24, the differences in hardware aren’t as big as one might expect. The biggest change is the camera upgrade from 12 MP to 50 MP, but beyond that, the battery life remains the same, the CPU runs only about 0.3 GHz slower, and all models still have 8GB of RAM.
Despite these similarities, pricing varies significantly. In some regions, the S21 costs half as much as the S24, while the S22 and S23 are priced nearly the same as the newest model. Make sure you know what is important in a phone for you, before making an upgrade decision.
The Samsung Galaxy S21 range includes three handsets:
The standard S21 is available in phantom violet, phantom pink, phantom grey and phantom white. The S21 Plus comes in phantom grey, phantom black, and phantom violet while the S21 Ultra is available in just phantom black and phantom silver.
The standard S21 is the smallest of the S21 family with a 6.2-inch screen, while the S21 Plus and S21 Ultra are 6.7-inch and 6.8-inch respectively.
The S21 Ultra has an ultra-HD screen compared to full-HD screens on the other two, but all three have smooth 120Hz displays.
The S21 camera is one of the phone’s best features. The S21 and S21 Plus have triple camera set ups made of a 12MP main camera, 12MP ultra-wide and 64MP telephoto lenses.
The top-level S21 Ultra goes further with a 108MP lens as well as 100x space zoom.
Not sure which Samsung phone to buy? Check out our list of the best Samsung Galaxy smartphones.
Written by Ray Ali, Mobiles expert
