Samsung Galaxy A51 vs Xiaomi Mi 9 comparison

Show Only Differences Highlight Differences	Samsung Galaxy A51	Xiaomi Mi 9
ratings
Overall NDTV Rating	Read Review	-
Design Rating		-
Display Rating		-
Software Rating		-
Performance Rating		-
Battery Life Rating		-
Camera Rating		-
Value for Money Rating		-
key specs
Display	6.50-inch	6.39-inch
Front Camera	32-megapixel	20-megapixel
Rear Camera	48-megapixel + 12-megapixel + 5-megapixel + 5-megapixel	48-megapixel + 12-megapixel + 16-megapixel
RAM	6GB	6GB
Storage	128GB	128GB
Battery Capacity	4000mAh	3300mAh
OS	Android 10	Android 9.0
Resolution	1080x2400 pixels	1080x2340 pixels
Processor	-	Qualcomm Snapdragon 855
general
Brand	Samsung	Xiaomi
Model	Galaxy A51	Mi 9
Release date	January 1, 2020	February 1, 2019
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	158.50 x 73.60 x 7.90	157.50 x 74.67 x 7.61
Weight (g)	172.00	173.00
Battery capacity (mAh)	4000	3300
Fast charging	Proprietary	Proprietary
Colours	Prism Crush Blue, Prism Crush Black, Prism Crush Pink, Prism Crush White	Deep Grey, Holographic Illusion Blue, Holographic Illusion
Wireless charging	-	Yes
display
Screen size (inches)	6.50	6.39
Touchscreen	Yes	Yes
Resolution	1080x2400 pixels	1080x2340 pixels
Protection type	-	Gorilla Glass
Aspect ratio	-	19.5:9
hardware
Processor make	Samsung Exynos 9611	Qualcomm Snapdragon 855
RAM	6GB	6GB
Internal storage	128GB	128GB
Expandable storage	Yes	-
Expandable storage type	microSD	-
Expandable storage up to (GB)	512	-
Dedicated microSD slot	Yes	-
Processor	-	2.84GHz octa-core
camera
Rear camera	48-megapixel (f/2.0) + 12-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4)	48-megapixel (f/1.75, 0.8-micron) + 12-megapixel (f/2.2, 1.0-micron) + 16-megapixel (f/2.2, 1.0-micron)
Front camera	32-megapixel (f/2.2)	20-megapixel (f/2.0, 0.9-micron)
Rear autofocus	-	Yes
Rear flash	-	Yes
software
Operating system	Android 10	Android 9.0
Skin	One UI 2.0	MIUI 10
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 ac	802.11 a/b/g/n/ac
GPS	Yes	Yes
Bluetooth	Yes, v 5.00	Yes, v 5.00
NFC	Yes	Yes
USB OTG	Yes	-
USB Type-C	Yes	Yes
Headphones	3.5mm	-
FM	Yes	-
Number of SIMs	2	2
Wi-Fi Direct	Yes	-
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
sim 2
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
sensors
Face unlock	Yes	Yes
Fingerprint sensor	Yes	Yes
In-Display Fingerprint Sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	Yes
Ambient light sensor	Yes	Yes
Gyroscope	Yes	Yes
3D face recognition	-	Yes

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