Samsung Galaxy M21 vs Realme X vs Xiaomi Redmi Note 7 Pro
Key Feature Comparison
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At a Glance
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Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.2 GHz, Dual core, Kryo 360 + 1.7 GHz, Hexa Core, Kryo 360)
Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)
6000 mAh
3765 mAh
4000 mAh
6.4 inches
6.53 inches
6.3 inches
Triple, 48MP + 8MP + 5MP
Dual, 48MP + 5MP
Dual, 48MP + 5MP
4G
4G
4G
Detailed Specs
Screen Size
6.4 inches
6.53 inches
6.3 inches
Screen Type
Super AMOLED
AMOLED
IPS LCD
Screen Resolution
1080 x 2340 pixels
1080 x 2340 pixels
1080 x 2340 pixels
Pixel Density
403 ppi
394 ppi
409 ppi
Aspect Ratio
19.5:9
19.5:9
19.5:9
Screen Protection
Gorilla Glass 3
Gorilla Glass 5
Gorilla Glass 5
Screen to Body Ratio
91%
85.9%
81.21 %
Screen Design
Waterdrop notch
Bezel-less
Waterdrop notch
Screen Quality
FHD
FHD
FHD
Peak Brightness
420 nits
-
-
Phone Variants
4GB 64GB, 6GB 128GB
128GB 4GB RAM, 128GB 8GB RAM
6GB 64GB, 4GB 64GB, 6GB 128GB
Expandable Storage
Yes
No
Yes
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Storage Type
UFS 2.1
UFS 2.1
eMMC 5.1
Expandable Storage Capacity
Yes, 512 GB
-
Yes, 256 GB
OTG Support
Yes
Yes
Yes
Sensors
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Accelerometer, gyro, proximity, compass
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Operating System
Android v10 (Q)
Android 9.0 (Pie)
Android v9.0 (Pie)
GPU
Mali-G72 MP3
Adreno 616
Adreno 612
Chipset
Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 710
Qualcomm Snapdragon 675
CPU
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.2 GHz, Dual core, Kryo 360 + 1.7 GHz, Hexa Core, Kryo 360)
Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)
Custom User Interface
Samsung One UI
ColorOS
MIUI
Clock Speed
2.3 GHz
2.2 GHz
2 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
10 nm
10 nm
11 nm
Battery Capacity
6000 mAh
3765 mAh
4000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-Po
Li-Polymer
Charger Type
Fast, 15W
VOOC, v3.0, 20W
Quick, v4.0
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Charging Time
-
55 % in 30 minutes
-
Announced On
18-Mar-20
18-Jul-19
13-Mar-19
Market Status
Available
Available
Available
Brand
Samsung
Realme
Xiaomi
Model Number
SM-M215FZKDINS
RMX1901
M1901F7S
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 13,499
Rs. 17,999
Rs. 14,900
GPS
Yes A-GPS, Glonass
Yes, A-GPS, GLONASS
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
Dolby Atmos
Active noise cancellation with dedicated mic
NFC
No
No
No
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
3.5mm Audio Jack
Yes
Yes
Yes
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano (Hybrid)
Wi-Fi
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
3.5 mm
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM, Dual VoLTE
Dual SIM, GSM+GSM, Dual VoLTE
eSIM
No
No
No
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot
Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
VoLTE
Yes
Yes
Yes
SIM 1 Bands
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 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...
SIM 2 Bands
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 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...
FM Radio
-
No
Yes
Front Video Recording
1920x1080 @ 30 fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Features
HDR
HDR
HDR
Front Camera Setup
Single, 20MP
Single, 16MP
Single, 13MP
Front Camera 1 Resolution
20 MP
16 MP
13 MP
Front Camera 1 Type
f/2.2 Primary Camera
f/2.0, Wide Angle Primary Camera
f/2.0, Primary Camera
Front Camera 1 Lens
26 mm focal length
3.41 mm focal length, 1 micrometre pixel size
1.12 micrometre pixel size
Front Sensor
CMOS
CMOS
-
Front Aperture
f/2.2
f/2.0
f/2.0
Front Flash
No
-
-
Weight
188 grams
191 grams
186 grams
Colors
Midnight Blue, Raven Black
Steam White, Space Blue
Space Black, Neptune Blue, Nebula Red, Astro White
Build
Back: Plastic
Plastic body
Back: Gorilla Glass
Dimensions
159 x 75.1 x 8.9 mm
161.2 x 76.1 x 9.4 mm
159.2 x 75.2 x 8.1 mm
SAR Value
Head: 0.468 W/kg
-
Head: 0.962 W/kg, Body: 0.838 W/kg
OIS
No
No
-
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 60 fps
3840x2160 @ 30 fps, 1920x1080 @ 60 fps, 1280x720 @ 120 fps
Rear Camera Features
4 x Digital Zoom, Auto Flash, Face detection, Touch to focus
2 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Triple, 48MP + 8MP + 5MP
Dual, 48MP + 5MP
Dual, 48MP + 5MP
Rear Camera 1 Resolution
48 MP
48 MP
48 MP
Rear Camera 1 Type
f/2.0 (upto 4x Digital Zoom) Primary Camera
f/1.8 (upto 2x Digital Zoom) Primary Camera
f/1.79, Primary Camera
Rear Camera 1 Lens
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
4.73 mm focal length, 2" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
Rear Camera 2 Resolution
8 MP
5 MP
5 MP
Rear Camera 2 Type
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.4, Depth Camera
f/2.4, Depth Camera
Rear Camera 2 Lens
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
2.176 mm focal length
-
Rear Camera 3 Resolution
5 MP
-
-
Rear Camera 3 Type
f/2.2, Depth Camera
-
-
Rear Sensor
CMOS image sensor
Exmor-RS CMOS Sensor
Exmor-RS CMOS Sensor
Rear Aperture
f/2.0
f/1.8
f/1.79
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
Rear
On-Screen
Rear
Face Unlock
Yes
Yes
Yes
Fingerprint Scanner Type
-
Optical
-