Google Pixel 9a vs Samsung Galaxy S25 Ultra

Our verdict: On contract, the Google Pixel 9a works out £425.24 cheaper overall than the Samsung Galaxy S25 Ultra. The Samsung Galaxy S25 Ultra wins on display with a bigger 6.8" screen and a sharper 505 PPI. If you'd rather buy outright, the Google Pixel 9a starts at £259.99 SIM-free. The Samsung Galaxy S25 Ultra gives you more flexibility with 3 storage options to choose from.

Screen
6.3" 6.8"
Display
P-OLED, HDR10+, 120Hz, 1800 nits Dynamic LTPO AMOLED 2X
Resolution
1080 x 2424 1440 x 3120
Pixels Per Inch
421 505
Rear Camera
48 Megapixels 200 Megapixels
Front Camera
13 Megapixels 12 Megapixels
Chipset
Google Tensor G4 (4nm) Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
Storage
128GB, 256GB 256GB, 512GB, 1TB
OS
Android 15 Android 15
SIM Type
nano-SIM and e-SIM nano-SIM and e-SIM
Connectivity
Up to 5G Up to 5G
Wi-Fi
802.11 a/b/g/n/ac/6 tri-band 802.11 a/b/g/n/ac/6e/7
Bluetooth
5.3, A2DP, LE 5.3, A2DP, LE
Dimensions
154.7 x 73.3 x 8.9 mm 162.8 x 77.6 x 8.2 mm
Weight
186 grams 219 grams
Water Resistance
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) IP68 - Dust and water resistant over 1.5 meter and 30 minutes
Contracts
£14.99/mo (£29.00 upfront) £28.99/mo (£89.00 upfront)
SIM-free
£259.99 £709.00
Google Pixel 9a Google Pixel 9a Samsung Galaxy S25 Ultra Samsung Galaxy S25 Ultra
Screen 6.3" 6.8"
Display P-OLED, HDR10+, 120Hz, 1800 nits Dynamic LTPO AMOLED 2X
Resolution 1080 x 2424 1440 x 3120
Pixels Per Inch 421 505
Rear Camera 48 Megapixels 200 Megapixels
Front Camera 13 Megapixels 12 Megapixels
Chipset Google Tensor G4 (4nm) Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
Storage 128GB, 256GB 256GB, 512GB, 1TB
OS Android 15 Android 15
SIM Type nano-SIM and e-SIM nano-SIM and e-SIM
Connectivity Up to 5G Up to 5G
Wi-Fi 802.11 a/b/g/n/ac/6 tri-band 802.11 a/b/g/n/ac/6e/7
Bluetooth 5.3, A2DP, LE 5.3, A2DP, LE
Dimensions 154.7 x 73.3 x 8.9 mm 162.8 x 77.6 x 8.2 mm
Weight 186 grams 219 grams
Water Resistance IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) IP68 - Dust and water resistant over 1.5 meter and 30 minutes
Contracts £14.99/mo
£29.00 upfront
£28.99/mo
£89.00 upfront
SIM-free £259.99 £709.00
Deals Deals

Frequently Asked Questions

Is the Google Pixel 9a or Samsung Galaxy S25 Ultra cheaper on contract?

Based on total cost of ownership, the Google Pixel 9a is cheaper on contract at £379.80 over the life of the deal from £14.99 per month with £29.00 upfront.

Which has the better screen, the Google Pixel 9a or Samsung Galaxy S25 Ultra?

The Samsung Galaxy S25 Ultra has the bigger screen at 6.8" compared to the Google Pixel 9a's 6.3", the Samsung Galaxy S25 Ultra has the sharper display at 505 pixels per inch versus 421, and the Google Pixel 9a uses a P-OLED, HDR10+, 120Hz, 1800 nits panel while the Samsung Galaxy S25 Ultra has a Dynamic LTPO AMOLED 2X.

Which has the better camera, the Google Pixel 9a or Samsung Galaxy S25 Ultra?

The Google Pixel 9a features a 48 Megapixels rear camera, while the Samsung Galaxy S25 Ultra has a 200 Megapixels rear camera. Both devices also have front-facing cameras for selfies and video calls.

Which is cheaper to buy SIM-free, the Google Pixel 9a or Samsung Galaxy S25 Ultra?

The Google Pixel 9a is cheaper SIM-free, starting from £259.99.

What storage options are available for the Google Pixel 9a and Samsung Galaxy S25 Ultra?

The Google Pixel 9a is available in 128GB, 256GB, while the Samsung Galaxy S25 Ultra comes in 256GB, 512GB, 1TB.

What processors do the Google Pixel 9a and Samsung Galaxy S25 Ultra use?

The Google Pixel 9a is powered by the Google Tensor G4 (4nm), while the Samsung Galaxy S25 Ultra uses the Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm).

Which is easier to carry and hold, the Google Pixel 9a or Samsung Galaxy S25 Ultra?

The Google Pixel 9a is the more portable of the two — it's 33g lighter at 186 grams, it's also the more compact phone at 154.7 x 73.3 x 8.9 mm, the Samsung Galaxy S25 Ultra is slimmer at 8.2mm thick.

Which is more water resistant, the Google Pixel 9a or Samsung Galaxy S25 Ultra?

The Google Pixel 9a is rated IP68 dust tight and water resistant (immersible up to 1.5m for 30 min), while the Samsung Galaxy S25 Ultra is rated IP68 - Dust and water resistant over 1.5 meter and 30 minutes.

What operating system do the Google Pixel 9a and Samsung Galaxy S25 Ultra run?

Both phones run Android 15.