Realme C21y vs Xiaomi Redmi 3s

Key Specs

Battery
Battery	5000 mAh	4100 mAh
Display
Display	6.5 inches (16.51 cm)	5.0 inches (12.7 cm)
Front Camera
Front Camera	5 MP	5 MP
Processor
Processor	Unisoc T610	Qualcomm Snapdragon 430 MSM8937
RAM
RAM	3 GB	2 GB
Rear Camera
Rear Camera	13 MP + 2 MP + 2 MP	13 MP

Battery

Capacity
Capacity	5000 mAh	4100 mAh
Quick Charging
Quick Charging	-	Yes, Fast
Removable
Removable	No	No
Type
Type	Li-ion	Li-Polymer
USB Type-C
USB Type-C	No	No

Design

Build Material
Build Material	-	Case: Metal Back: Metal
Colours
Colours	Cross Blue, Cross Black	Gold, Silver, Dark Grey
Height
Height	164.5 mm	139.3 mm
Thickness
Thickness	9.1 mm	8.5 mm
Weight
Weight	200 grams Below	144 grams
Width
Width	76 mm	69.6 mm

Display

Aspect Ratio
Aspect Ratio	20:9	-
Bezel-less display
Bezel-less display	Yes with waterdrop notch	-
Brightness
Brightness	420 nits	-
Display Type
Display Type	IPS LCD	IPS LCD
Pixel Density
Pixel Density	270 ppi	294 ppi
Refresh Rate
Refresh Rate	60 Hz	-
Resolution
Resolution	720x1600 px (HD+)	720x1280 px (HD)
Screen Protection
Screen Protection	-	No
Screen Size
Screen Size	6.5 inches (16.51 cm)	5.0 inches (12.7 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	81.59 %	70.92 %
Screen to Body Ratio (claimed by the brand)
Screen to Body Ratio (claimed by the brand)	88.7 %	-
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Autofocus
Autofocus	-	No
Camera Features
Camera Features	Fixed Focus	-
Camera Setup
Camera Setup	Single	-
Flash
Flash	-	No
Resolution
Resolution	5 MP f/2.2, Wide Angle, Primary Camera(5.0" sensor size, 1.12µm pixel size)	5 MP f/2.2, Primary Camera
Sensor
Sensor	CMOS	-
Video Recording
Video Recording	1280x720 @ 30 fps	-

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General

Brand
Brand	realme	Xiaomi
Custom UI
Custom UI	Realme UI	MIUI
Launch Date
Launch Date	August 30, 2021 (Official)	August 17, 2016 (Official)
Operating System
Operating System	Android v11	Android v6.0 (Marshmallow)

Main Camera

Autofocus
Autofocus	Yes, Phase Detection autofocus	Yes, Phase Detection autofocus
Camera Features
Camera Features	4 x Digital Zoom Auto Flash Face detection Touch to focus	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
Camera Setup	Triple	Single
Flash
Flash	Yes, LED Flash	Yes, LED Flash
Image Resolution
Image Resolution	4128 x 3096 Pixels	4128 x 3096 Pixels
OIS
OIS	-	No
Resolution
Resolution	13 MP f/2.2, Wide Angle (80° field-of-view), Primary Camera(25.5 mm focal length, 3" sensor size, 1.12µm pixel size)2 MP f/2.4, Macro Camera(21.8 mm focal length, 5.0" sensor size, 1.75µm pixel size)2 MP f/2.4(21.8 mm focal length, 5.0" sensor size, 1.75µm pixel size)	13 MP f/2.0, Primary Camera
Sensor
Sensor	CMOS image sensor	CMOS image sensor
Settings
Settings	Exposure compensation, ISO control	Exposure compensation, ISO control
Shooting Modes
Shooting Modes	Continuous Shooting High Dynamic Range mode (HDR)	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
Video Recording	1920x1080 @ 30 fps	1920x1080 @ 30 fps

Multimedia

Audio Jack
Audio Jack	3.5 mm	3.5 mm
FM Radio
FM Radio	-	Yes
Loudspeaker
Loudspeaker	Yes	Yes

Network & Connectivity

Bluetooth
Bluetooth	Yes, v5.0	Yes, v4.1
GPS
GPS	Yes with A-GPS, Glonass	Yes with A-GPS, Glonass
NFC
NFC	No	No
Network Support
Network Support	5G Not Supported in India, 4G Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
SAR Value	Head: 0.855 W/kg, Body: 0.674 W/kg	Head: 0.617 W/kg, Body: 0.429 W/kg
SIM 1
SIM 1	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 900 MHz 2G Bands: GSM 1800 / 900 MHz GPRS: Available EDGE: Available
SIM 2
SIM 2	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 900 MHz 2G Bands: GSM 1800 / 900 MHz GPRS: Available EDGE: Available
SIM Size
SIM Size	SIM1: Nano, SIM2: Nano	SIM1: Micro, SIM2: Nano (Hybrid)
SIM Slot(s)
SIM Slot(s)	Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
USB Connectivity	Mass storage device, USB charging, microUSB 2.0	Mass storage device, USB charging, microUSB 2.0
VoLTE
VoLTE	Yes	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Features	Mobile Hotspot	Wi-Fi Direct, Mobile Hotspot

Performance

Architecture
Architecture	-	64 bit
CPU
CPU	Octa core (1.8 GHz, Dual core, Cortex A75 + 1.8 GHz, Hexa Core, Cortex A55)	Octa core, 1.4 GHz, Cortex A53
Chipset
Chipset	Unisoc T610	Qualcomm Snapdragon 430 MSM8937
Fabrication
Fabrication	12 nm	-
Graphics
Graphics	Mali-G52	Adreno 505
RAM type
RAM Type	LPDDR4X	LPDDR3

Sensors

Fingerprint Sensor
Fingerprint Sensor	Yes	No
Fingerprint Sensor Position
Fingerprint Sensor Position	Rear	-
Other Sensors
Other Sensors	Light sensor, Proximity sensor, Accelerometer	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
Expandable Memory	Yes, Up to 256 GB	Yes, Up to 128 GB
Internal Memory
Internal Memory	32 GB	16 GB
Storage Type
Storage Type	eMMC 5.1
USB OTG
USB OTG	Yes	Yes