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Samsung Galaxy A21 vs Samsung Galaxy A31 vs Samsung Galaxy A51

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Last Updated: 
18th Jan 2021

Key Feature Comparison

Samsung Galaxy A21
7/10
Samsung Galaxy A31
₹16,790
8/10
Samsung Galaxy A51
₹22,949
8/10
Samsung Galaxy A21
Samsung Galaxy A21
7/10
7/10
VS
Samsung Galaxy A31
Samsung Galaxy A31
8/10
₹16,790
8/10
VS
Samsung Galaxy A51
Samsung Galaxy A51
8/10
₹22,949
8/10
Display
Screen Size
6.5 inches
6.4 inches
6.5 inches
Screen Type
Super AMOLED
Super AMOLED
Super AMOLED
Screen Resolution
720 x 1600 pixels
1080 x 2400 pixels
1080 x 2400 pixels
Pixel Density
270 ppi
411 ppi
405 ppi
Aspect Ratio
20:09
20:09
20:09
Screen to Body Ratio
79.26%
84.92%
87.44%
Screen Design
Punch-Hole Display
Waterdrop Notch
Punch-Hole Display
Screen Quality
HD
FHD
FHD
Miscellaneous Features
Sensors
Light sensor, Proximity sensor, Accelerometer
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Memory & Storage
Phone Variants
32GB 3GB RAM
128GB 6GB RAM
128GB 6GB RAM, 128GB 8GB RAM
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Storage Type
eMMC 5.1
-
UFS 2.0
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 512 GB
OTG Support
-
Yes
Yes
Performance
Operating System
Android v10 (Q)
Android v10 (Q)
Android v10 (Q)
GPU
PowerVR GE8320
Mali-G52
Mali-G72 MP3
Chipset
MediaTek Helio P35
MediaTek Helio P65
Samsung Exynos 9 Octa 9611
CPU
Octa core, 2.3 GHz, Cortex A53
Octa core (2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Clock Speed
2.3 GHz
2 GHz
2.3 GHz
Architecture
64 bit
64 bit
64 bit
Custom User Interface
-
Samsung One UI
Samsung One UI
General
Announced On
8-Apr-20
24-Mar-20
5-Dec-19
Market Status
Not Released in India
Available
Available
Brand
Samsung
Samsung
Samsung
Price Status
Expected
Confirmed
Confirmed
Price
Rs. 18,900
Rs. 17,999
Rs. 20,450
Battery
Battery Capacity
4000 mAh
5000 mAh
4000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 15W
Fast, 15W
Fast, 15W
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Network & Connectivity
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
NFC
Yes
Yes
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
Audio Features
-
Dolby Atmos
Dolby Atmos
FM Radio
-
Yes
-
Front Camera
Front Video Recording
1080p at 30fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Setup
Single, 13MP
Single, 20MP
Single, 32MP
Front Camera 1 Resolution
13 MP
20 MP
32 MP
Front Camera 1 Type
Primary Camera
f/2.2 Primary Camera
f/2.2 Primary Camera
Front Flash
-
No
No
Design
Weight
193 grams
185 grams
172 grams
Colors
Black
Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White
Prism Crush White, Prism Crush Black, Prism Crush Pink, Prism Crush Blue
Build
Back: Plastic
-
Back: Plastic
Dimensions
167.8 x 76.7 x 8.1 mm
159.3 x 73.1 x 8.6 mm
158.5 x 73.6 x 7.9 mm
SAR Value
-
Head: 1.13 W/kg
Head: 0.598 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
Wi-Fi
Yes, Wi-Fi 802.11, b/g/n
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
eSIM
No
No
No
Wi-Fi Features
Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
VoLTE
Yes
Yes
Yes
SIM 1 Bands
4G Bands: TD-LTE 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
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), 3G Bands: UMTS 19...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 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 Bands: UMTS 1...
SIM 2 Bands
4G Bands: TD-LTE 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
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), 3G Bands: UMTS 19...
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...
Rear Camera
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Camera Features
Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Quad, 16MP + 8MP + 2MP + 2MP
Quad, 48MP + 8MP + 5MP + 5MP
Quad, 48MP + 12MP + 5MP + 5MP
Rear Camera 1 Resolution
16 MP
48 MP
48 MP
Rear Camera 1 Type
Primary Camera
f/2.0 (upto 8x Digital Zoom) Primary Camera
f/2.0 (upto 8x Digital Zoom) Primary Camera
Rear Camera 2 Resolution
8 MP
8 MP
12 MP
Rear Camera 2 Type
Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 3 Resolution
2 MP
5 MP
5 MP
Rear Camera 3 Type
Macro Camera
f/2.4, Macro Camera
f/2.4, Macro Camera
Rear Camera 4 Resolution
2 MP
5 MP
5 MP
Rear Camera 4 Type
Depth Camera
f/2.4, Depth Camera
f/2.2, Depth Camera
OIS
-
No
No
Rear Video Recording
-
1920x1080 @ 30 fps
3840x2160 @ 30 fps
Rear Camera 1 Lens
-
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2.25" sensor size, 0.8 micrometre pixel size
Sensors
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
Rear
On-screen
On-screen
Fingerprint Scanner Type
-
Optical
Optical

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