Redmi Note 15 5G vs Samsung Galaxy S21 comparison

Show Only Differences Highlight Differences	Sponsored Redmi Note 15 5G	Samsung Galaxy S21
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	6.77-inch	6.20-inch
Front Camera	20-megapixel	10-megapixel
Rear Camera	108-megapixel + 8-megapixel	12-megapixel + 12-megapixel + 64-megapixel
RAM	8GB	8GB
Storage	128GB, 256GB	128GB, 256GB
Battery Capacity	5520mAh	4000mAh
OS	Android 15	Android 11
Resolution	1080x2392 pixels	1080x2400 pixels
Processor	-	Samsung Exynos 2100
general
Brand	Xiaomi	Samsung
Model	Redmi Note 15 5G	Galaxy S21
Release date	December 11, 2025	January 14, 2021
Launched in India	No	-
Form factor	Touchscreen	Touchscreen
Body type	Polycarbonate	-
Dimensions (mm)	164.00 x 75.42 x 7.35	151.70 x 71.20 x 7.90
Weight (g)	178.00	171.00
IP rating	IP65	IP68
Battery capacity (mAh)	5520	4000
Removable battery	No	-
Fast charging	45W Fast Charging	Proprietary
Wireless charging	No	Yes
Colours	Black, Glacier Blue, and Mist Purple	Phantom Violet
display
Refresh Rate	120 Hz	-
Resolution Standard	FHD+	-
Screen size (inches)	6.77	6.20
Touchscreen	Yes	Yes
Resolution	1080x2392 pixels	1080x2400 pixels
Protection type	Gorilla Glass 7i	Gorilla Glass
Aspect ratio	16:9	20:9
Pixels per inch (PPI)	-	421
hardware
Processor make	Qualcomm Snapdragon 6 Gen 3	Samsung Exynos 2100
RAM	8GB	8GB
Internal storage	128GB, 256GB	128GB, 256GB
Expandable storage	Yes	-
Expandable storage type	microSD	-
Expandable storage up to (GB)	1TB	-
Processor	-	2.2GHz octa-core (3x2.8GHz + 4x2.2GHz + 1x2.9GHz)
camera
Rear camera	108-megapixel + 8-megapixel	12-megapixel (f/1.8, 1.8-micron) + 12-megapixel (f/2.2, 1.4-micron) + 64-megapixel (f/2.0, 0.8-micron)
No. of Rear Cameras	2	3
Front camera	20-megapixel	10-megapixel (f/2.2, 1.22-micron)
No. of Front Cameras	1	1
Rear autofocus	-	Yes
Rear flash	-	Yes
software
Operating system	Android 15	Android 11
Skin	HyperOS 2	One UI 3.1
connectivity
Wi-Fi	Yes	Yes
Bluetooth	Yes	Yes, v 5.00
NFC	Yes	Yes
USB Type-C	Yes	Yes
Wi-Fi standards supported	-	802.11 a/b/g/n/ac/ax
GPS	-	Yes
Number of SIMs	-	2
sim 1
SIM Type	-	Nano-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes
5G	-	Yes
sim 2
SIM Type	-	Nano-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes
5G	-	Yes
sensors
Face unlock	-	Yes
In-Display Fingerprint Sensor	-	Yes
Compass/ Magnetometer	-	Yes
Proximity sensor	-	Yes
Accelerometer	-	Yes
Ambient light sensor	-	Yes
Gyroscope	-	Yes
Barometer	-	Yes

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