Samsung Galaxy S21 vs Samsung Galaxy S23

Our verdict: Choosing the Samsung Galaxy S21 on contract will save you £67.59 compared to the Samsung Galaxy S23. You'll get a bigger viewing experience from the Samsung Galaxy S21 at 6.2". On paper, the Samsung Galaxy S21 wins the camera battle with 64MP on the rear. Video callers will appreciate the Samsung Galaxy S23 and its 12MP front camera.

Screen
6.2" 6.1"
Display
Dynamic AMOLED 2X Dynamic AMOLED 2X
Resolution
1080 x 2400 1080 x 2340
Pixels Per Inch
424 422
Rear Camera
64 Megapixels 50 Megapixels
Front Camera
10 Megapixels 12 Megapixels
Chipset
Exynos 2100 Qualcomm SM8550 Snapdragon 8 Gen 2 (4 nm)
Storage
128GB, 256GB 128GB, 256GB
OS
Android 11 Android 13
SIM Type
Nano SIM Nano SIM
Connectivity
Up to 5G Up to 5G
Wi-Fi
802.11 a/b/g/n/ac/6 802.11 a/b/g/n/ac/6e
Bluetooth
5.0 with A2DP, LE 5.3, A2DP, LE
Dimensions
151.7 x 71.2 x 7.9 mm 146.3 x 70.9 x 7.6 mm
Weight
171 grams 167 grams
Water Resistance
IP53 - dust and splash protection IP68 - Dust and water resistant over 1.5 meter and 30 minutes
Contracts
£17.99/mo (£0.00 upfront) £16.00/mo (£109.00 upfront)
SIM-free
£129.95 £209.00
Samsung Galaxy S21 Samsung Galaxy S21 Samsung Galaxy S23 Samsung Galaxy S23
Screen 6.2" 6.1"
Display Dynamic AMOLED 2X Dynamic AMOLED 2X
Resolution 1080 x 2400 1080 x 2340
Pixels Per Inch 424 422
Rear Camera 64 Megapixels 50 Megapixels
Front Camera 10 Megapixels 12 Megapixels
Chipset Exynos 2100 Qualcomm SM8550 Snapdragon 8 Gen 2 (4 nm)
Storage 128GB, 256GB 128GB, 256GB
OS Android 11 Android 13
SIM Type Nano SIM Nano SIM
Connectivity Up to 5G Up to 5G
Wi-Fi 802.11 a/b/g/n/ac/6 802.11 a/b/g/n/ac/6e
Bluetooth 5.0 with A2DP, LE 5.3, A2DP, LE
Dimensions 151.7 x 71.2 x 7.9 mm 146.3 x 70.9 x 7.6 mm
Weight 171 grams 167 grams
Water Resistance IP53 - dust and splash protection IP68 - Dust and water resistant over 1.5 meter and 30 minutes
Contracts £17.99/mo
£0.00 upfront
£16.00/mo
£109.00 upfront
SIM-free £129.95 £209.00
Deals Deals

Frequently Asked Questions

Is the Samsung Galaxy S21 or Samsung Galaxy S23 cheaper on contract?

Based on total cost of ownership, the Samsung Galaxy S21 is cheaper on contract at £454.62 over the life of the deal from £17.99 per month with £0.00 upfront.

Which has the better screen, the Samsung Galaxy S21 or Samsung Galaxy S23?

The Samsung Galaxy S21 has the bigger screen at 6.2" compared to the Samsung Galaxy S23's 6.1", both screens are similarly sharp at around 424 pixels per inch, and both use Dynamic AMOLED 2X panels.

Which has the better camera, the Samsung Galaxy S21 or Samsung Galaxy S23?

The Samsung Galaxy S21 features a 64 Megapixels rear camera, while the Samsung Galaxy S23 has a 50 Megapixels rear camera. Both devices also have front-facing cameras for selfies and video calls.

Which is cheaper to buy SIM-free, the Samsung Galaxy S21 or Samsung Galaxy S23?

The Samsung Galaxy S21 is cheaper SIM-free, starting from £129.95.

What storage options are available for the Samsung Galaxy S21 and Samsung Galaxy S23?

The Samsung Galaxy S21 is available in 128GB, 256GB, while the Samsung Galaxy S23 comes in 128GB, 256GB.

What processors do the Samsung Galaxy S21 and Samsung Galaxy S23 use?

The Samsung Galaxy S21 is powered by the Exynos 2100, while the Samsung Galaxy S23 uses the Qualcomm SM8550 Snapdragon 8 Gen 2 (4 nm).

Which is easier to carry and hold, the Samsung Galaxy S21 or Samsung Galaxy S23?

The Samsung Galaxy S23 is the more portable of the two — it's 4g lighter at 167 grams, it's also the more compact phone at 146.3 x 70.9 x 7.6 mm, and is slimmer at 7.6mm thick.

Which is more water resistant, the Samsung Galaxy S21 or Samsung Galaxy S23?

The Samsung Galaxy S21 is rated IP53 - dust and splash protection, while the Samsung Galaxy S23 is rated IP68 - Dust and water resistant over 1.5 meter and 30 minutes.

What operating system do the Samsung Galaxy S21 and Samsung Galaxy S23 run?

The Samsung Galaxy S21 runs Android 11 and the Samsung Galaxy S23 runs Android 13. This is one of the biggest factors when choosing between the two, as each ecosystem has its own apps, services and features.