Samsung Galaxy A31 vs Samsung Galaxy S21 Ultra

Samsung Galaxy A31 vs Samsung Galaxy S21 Ultra: Compare the Samsung Galaxy A31 and Samsung Galaxy S21 Ultra to find out which one is the better choice for you. Discover the key differences and similarities between these two popular smartphones.

Feature	Samsung Galaxy A31	Samsung Galaxy S21 Ultra
Display	6.4-inch Super AMOLED	6.8-inch Dynamic AMOLED 2X
Resolution	1080 x 2400 pixels	1440 x 3200 pixels
Refresh Rate	60Hz	120Hz (up to 120Hz adaptive refresh rate)
Processor	Octa-core (2×2.0 GHz Cortex-A75 & 6×1.7 GHz Cortex-A55)	Exynos 2100 (International)Qualcomm Snapdragon 888 (USA/China)
RAM	4GB	12GB, 16GB
Storage	64GB, 128GB	128GB, 256GB, 512GB
Main Camera	48 MP (f/2.0, wide) 8 MP (f/2.2, ultrawide) 5 MP (f/2.4, macro) 5 MP (f/2.4, depth)	108 MP (f/1.8, wide) 12 MP (f/2.2, ultrawide) 10 MP (f/2.4, periscope telephoto) 10 MP (f/4.9, telephoto)
Front Camera	20 MP (f/2.2)	40 MP (f/2.2, wide)
Video Recording	1080p@30fps	8K@24fps, 4K@30/60fps
Battery Capacity	5000 mAh	5000 mAh
Charging	Fast charging 15W	Fast charging 25W, Fast wireless charging 15W, Reverse wireless charging 4.5W
Operating System	Android 10, One UI 2.5	Android 11, One UI 3.1
Water and Dust Resistance	No	IP68
5G Capable	No	Yes
Security	In-display fingerprint sensor	In-display ultrasonic fingerprint sensor
Sim Card	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
Dimensions	159.3 x 73.1 x 8.6 mm	165.1 x 75.6 x 8.9 mm
Weight	185 g	228 g