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Samsung Galaxy M21 vs Samsung Galaxy M31 vs Samsung A8 Star

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Last Updated: 
2nd Sep 2020

Key Feature Comparison

Samsung Galaxy M21
₹12,499
8/10
Samsung Galaxy M31
₹15,999
8/10
Samsung Galaxy A8 Star
₹18,520
8/10
Samsung Galaxy M21
Samsung Galaxy M21
8/10
₹12,499
8/10
VS
Samsung Galaxy M31
Samsung Galaxy M31
8/10
₹15,999
8/10
VS
Samsung Galaxy A8 Star
Samsung Galaxy A8 Star
8/10
₹18,520
8/10
Display
Screen Size
6.4 inches
6.4 inches
6.3 inches
Screen Type
Super AMOLED
Super AMOLED
Super AMOLED
Screen Resolution
1080 x 2340 pixels
1080 x 2340 pixels
1080 x 2220 pixels
Pixel Density
403 ppi
403 ppi
392 ppi
Aspect Ratio
19.5:9
19.5:9
18.5:9
Screen Protection
Corning Gorilla Glass v3
Corning Gorilla Glass v3
-
Screen to Body Ratio
91%
83.92%
80.91%
Screen Design
Waterdrop Notch
Notch
Bezel-less
Screen Quality
FHD
FHD
FHD
Peak Brightness
420 nits
-
-
Battery
Battery Capacity
6000 mAh
6000 mAh
3700 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 15W
Fast, 15W
Fast
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Memory & Storage
Phone Variants
64GB 4GB RAM, 128GB 6GB RAM
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
64 GB, 4/6 GB RAM
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Storage Type
UFS 2.1
UFS 2.1
eMMC 5.1
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 400 GB
OTG Support
Yes
Yes
Yes
General
Announced On
18-Mar-20
25-Feb-20
5-Jun-18
Market Status
Available
Available
Available
Brand
Samsung
Samsung
Samsung
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 13,499
Rs. 15,999
Rs. 24,208
Performance
Operating System
Android v10 (Q)
Android v10 (Q)
Android v8.0 (Oreo)
GPU
Mali-G72 MP3
Mali-G72 MP3
Adreno 512
Chipset
Samsung Exynos 9 Octa 9611
Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 660 MSM8956
CPU
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.2 GHz, Quad core, Kryo 260 + 1.8 GHz, Quad core, Kryo 260)
Custom User Interface
Samsung One UI
Samsung One UI
-
Clock Speed
2.3 GHz
2.3 GHz
2.2 GHz
Architecture
64 bit
64 bit
64 bit
Miscellaneous Features
Sensors
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Network & Connectivity
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
Dolby Atmos
Active noise cancellation with dedicated micDolby Atmos sound (headphones only)
NFC
No
No
Yes
Bluetooth
Yes
Yes
Yes
3.5mm Audio Jack
Yes
Yes
Yes
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
3.5 mm
FM Radio
-
Yes
-
Front Camera
Front Video Recording
1920x1080 @ 30 fps
1920x1080 @ 30 fps
1080p30fps
Front Camera Features
HDR
HDR
Fixed Focus
Front Camera Setup
Single, 20MP
Single, 32MP
Single, 24MP
Front Camera 1 Resolution
20 MP
32 MP
24 MP
Front Camera 1 Type
f/2.2 Primary Camera
f/2.0 Primary Camera
f/2.0 Primary Camera
Front Camera 1 Lens
26 mm focal length
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
-
Front Sensor
CMOS
Exmor RS
-
Front Flash
No
No
No
Design
Weight
188 grams
191 grams
188 grams
Colors
Midnight Blue, Raven Black
Black, Blue
Black, White
Build
Back: Plastic
Back: Plastic
Back: Gorilla Glass
Dimensions
159 x 75.1 x 8.9 mm
159.2 x 75.1 x 8.9 mm
162.4 x 77 x 7.5 mm
SAR Value
Head: 0.468 W/kg
Head: 0.383 W/kg
Head: 0.179 W/kg
Network
Network Support
4G (supports Indian bands), 3G, 2G
4G (supports Indian bands), 3G, 2G
4G (supports Indian bands), 3G, 2G
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, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/ac/b/g/n
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM, Dual VoLTE
Dual SIM, GSM+GSM
eSIM
No
No
No
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, 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) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
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) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 8...
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) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
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) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 8...
Rear Camera
OIS
No
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 @ 240 fps
3840x2160 @ 30 fps, 1280x720 @ 240 fps
Rear Camera Features
4 x Digital Zoom, Auto Flash, Face detection, Touch to focus
8 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
Quad, 64MP + 8MP + 5MP + 5MP
Dual, 16MP + 24MP
Rear Camera 1 Resolution
48 MP
64 MP
16 MP
Rear Camera 1 Type
f/2.0 (upto 4x Digital Zoom) Primary Camera
f/1.8 (upto 8x Digital Zoom) Primary Camera
f/1.7 Primary Camera
Rear Camera 1 Lens
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
27 mm focal length, 2.8" sensor size, 0.9 micrometre pixel size
Rear Camera 2 Resolution
8 MP
8 MP
24 MP
Rear Camera 2 Type
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/1.7 Camera
Rear Camera 2 Lens
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
-
Rear Camera 3 Resolution
5 MP
5 MP
-
Rear Camera 3 Type
f/2.2, Depth Camera
f/2.4, Macro Camera
-
Rear Sensor
CMOS image sensor
ISOCELL Plus
CMOS image sensor
Rear Camera 3 Lens
-
25 mm focal length, 5.0" sensor size, 1.12 micrometre pixel size
-
Rear Camera 4 Resolution
-
5 MP
-
Rear Camera 4 Type
-
f/2.2, Depth Camera
-
Sensors
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
Rear
Rear
Rear

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