Google Pixel 9a vs Samsung Galaxy S21 Ultra comparison

Show Only Differences Highlight Differences	Google Pixel 9a	Samsung Galaxy S21 Ultra
ratings
Overall NDTV Rating	Read Review	Read Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display	6.30-inch	6.80-inch
Processor	Google Tensor G4	Samsung Exynos 2100
Front Camera	13-megapixel	40-megapixel
Rear Camera	48-megapixel + 13-megapixel	108-megapixel + 12-megapixel + 10-megapixel + 10-megapixel
RAM	8GB	12GB, 16GB
Storage	256GB	128GB, 256GB, 512GB
Battery Capacity	5100mAh	5000mAh
OS	Android 15	Android 11
Resolution	1080x2424 pixels	1440x3220 pixels
general
Brand	Google	Samsung
Model	Pixel 9a	Galaxy S21 Ultra
Release date	March 19, 2025	January 14, 2021
AI Enabled	Yes	-
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	154.70 x 73.30 x 8.90	165.10 x 75.60 x 8.90
Weight (g)	185.90	228.00
IP rating	IP68	IP68
Battery capacity (mAh)	5100	5000
Removable battery	No	-
Fast charging	Proprietary	Proprietary
Wireless charging	Yes	Yes
Wireless Charging Type	7.5W	-
Colours	Iris, Obsidian, Peony, Porcelain	Phantom Titanium, Phantom Navy, Phantom Brown
display
Screen size (inches)	6.30	6.80
Touchscreen	Yes	Yes
Resolution	1080x2424 pixels	1440x3220 pixels
Protection type	Corning Gorilla Glass 3	Gorilla Glass
Aspect ratio	20:9	-
Pixels per inch (PPI)	422	515
hardware
Processor	octa-core	2.2GHz octa-core (3x2.8GHz + 4x2.2GHz + 1x2.9GHz)
Processor make	Google Tensor G4	Samsung Exynos 2100
RAM	8GB	12GB, 16GB
Internal storage	256GB	128GB, 256GB, 512GB
camera
Rear camera	48-megapixel (f/1.7) + 13-megapixel (f/2.2)	108-megapixel (f/1.8, 0.8-micron) + 12-megapixel (f/2.2, 1.4-micron) + 10-megapixel (f/2.4, 1.22-micron) + 10-megapixel (f/4.9, 1.22-micron)
No. of Rear Cameras	2	-
Rear autofocus	Yes	Laser autofocus
Rear flash	Yes	Yes
Front camera	13-megapixel (f/2.2)	40-megapixel (f/2.2, 0.7-micron)
No. of Front Cameras	1	-
Lens Type (Second Rear Camera)	Ultra Wide-Angle	-
software
Operating system	Android 15	Android 11
Skin	-	One UI 3.1
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac/ax	802.11 a/b/g/n/ac/ax
GPS	Yes	Yes
Bluetooth	Yes, v 5.30	Yes, v 5.00
NFC	Yes	Yes
USB Type-C	Yes	Yes
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-
sim 1
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
5G	Yes	Yes
sim 2
SIM Type	eSIM	Nano-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
5G	Yes	Yes
sensors
Face unlock	Yes	Yes
In-Display Fingerprint Sensor	Yes	Yes
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	Yes
Ambient light sensor	Yes	Yes
Gyroscope	Yes	Yes
Barometer	Yes	Yes