Redmi A4 5G vs Samsung Galaxy M21 comparison

Show Only Differences Highlight Differences	Redmi A4 5G	Samsung Galaxy M21
key specs
Display	6.88-inch	6.40-inch
Processor	Qualcomm Snapdragon 4s Gen 2	Samsung Exynos 9611
Front Camera	5-megapixel	20-megapixel
Rear Camera	50-megapixel + Unspecified	48-megapixel + 8-megapixel + 5-megapixel
RAM	4GB	4GB
Storage	64GB, 128GB	64GB
Battery Capacity	5160mAh	6000mAh
OS	Android 14	Android 10
Resolution	720x1640 pixels	2340x1080 pixels
general
Brand	Redmi	Samsung
Model	A4 5G	Galaxy M21
Release date	November 20, 2024	March 18, 2020
Launched in India	Yes	Yes
Dimensions (mm)	171.88 x 77.80 x 8.22	-
Weight (g)	212.35	188.00
IP rating	IP52	-
Battery capacity (mAh)	5160	6000
Removable battery	No	No
Wireless charging	No	No
Colours	Sparkling Purple, Starry Bllack	Midnight Blue, Raven Black
Form factor	-	Touchscreen
Thickness	-	8.9
Fast charging	-	Proprietary
display
Refresh Rate	120 Hz	-
Resolution Standard	HD+	-
Screen size (inches)	6.88	6.40
Touchscreen	Yes	Yes
Resolution	720x1640 pixels	2340x1080 pixels
Protection type	-	Gorilla Glass
Aspect ratio	-	19.5:9
hardware
Processor	octa-core	1.7GHz octa-core (4x1.7GHz + 4x2.3GHz)
Processor make	Qualcomm Snapdragon 4s Gen 2	Samsung Exynos 9611
RAM	4GB	4GB
Internal storage	64GB, 128GB	64GB
Expandable storage	Yes	Yes
Expandable storage type	microSD	microSD
Expandable storage up to (GB)	1-24	512
Dedicated microSD slot	Yes	-
camera
Rear camera	50-megapixel (f/1.8) + Unspecified	48-megapixel + 8-megapixel + 5-megapixel
No. of Rear Cameras	2	-
Front camera	5-megapixel (f/2.2)	20-megapixel
No. of Front Cameras	1	-
Rear autofocus	-	Yes
Rear flash	-	Yes
Front flash	-	No
software
Operating system	Android 14	Android 10
Skin	HyperOS	One UI 2.0
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac	802.11 a/b/g
GPS	Yes	Yes
Bluetooth	Yes, v 5.00	Yes
USB Type-C	Yes	Yes
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-
Headphones	-	3.5mm
sim 1
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
5G	Yes	-
sim 2
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
5G	Yes	-
ratings
Overall NDTV Rating	-	Read Review
Design Rating	-
Display Rating	-
Software Rating	-
Performance Rating	-
Battery Life Rating	-
Camera Rating	-
Value for Money Rating	-
sensors
Face unlock	-	Yes
Fingerprint sensor	-	Yes
Compass/ Magnetometer	-	Yes
Proximity sensor	-	Yes
Accelerometer	-	Yes
Ambient light sensor	-	Yes

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