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	X >	< X

Phone	Samsung Galaxy A51 (4G)	Samsung Galaxy A21
Current U.S. Carriers	(none)	(none)
Global Availability	Released	Released
Display Size	6.5" diag. 20 : 9	6.5" diag. 20 : 9
Display Resolution & Type	1080 x 2400 pixels (~405 ppi) AMOLED	720 x 1600 pixels (~270 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	60 Hz
Battery	4,000 mAh	4,000 mAh
Processor	2.3 GHz Samsung Exynos 9611	2 GHz MediaTek Helio P35 (MT6765)
RAM	4 GB	3 GB
Storage	128 GB	32 GB
Main Camera	48 megapixel	16 megapixel
Wide Camera	12 megapixel	8 megapixel
Tele Camera	-	-
Video Capture	4K UHD	1080p HD
Front Camera	32 megapixel	13 megapixel
Weight	6.07 oz (172g)	6.81 oz (193g)
Dimensions	6.24" x 2.89" x 0.31" (158 x 73 x 7.9 mm)	6.61" x 3.02" x 0.32" (168 x 77 x 8.1 mm)
Platform / OS	Android	Android
Network Bands	4G LTE: 2, 3, 4, 5, 7, 12, 13, 14, 20, 25, 26, 28, 30, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 *	4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 12)	LTE (Cat 6)
Features
Fingerprint Reader	Yes in-display (optical)	Yes stand-alone
Flashlight	Yes	Yes
Accessibility
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)
TTY/TDD (Digital)	Yes	Yes
Connectivity
Bluetooth	Yes	Yes
MirrorLink	Yes	-
NFC	Yes	Yes
USB	Yes USB Type C	Yes USB Type C
Wi-Fi	Yes 5 (802.11 a,ac,b,g,n)	Yes 5 (802.11 a,ac,b,g,n)
Input
Side Keys	Yes	Yes
Touch Screen	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes
Music
Headphone Jack (3.5mm)	Yes	Yes
Power
Fast Charging	Yes	Yes
Voice
HD Voice	Yes	Yes
Speaker Phone	Yes	Yes
	Samsung Galaxy A51 (4G)	Samsung Galaxy A21
	X >	< X

NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung Galaxy A51 (4G)	Samsung Galaxy A21