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Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy M51 vs Samsung Galaxy M31s

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Last Updated: 
20th Mar 2021

Key Feature Comparison

Samsung Galaxy S21 Ultra 5G
₹105,999
8/10
Samsung Galaxy M51
₹22,999
8/10
Samsung Galaxy M31s
₹18,499
8/10
Samsung Galaxy S21 Ultra 5G
Samsung Galaxy S21 Ultra 5G
8/10
₹105,999
8/10
VS
Samsung Galaxy M51
Samsung Galaxy M51
8/10
₹22,999
8/10
VS
Samsung Galaxy M31s
Samsung Galaxy M31s
8/10
₹18,499
8/10
Display
Screen Size
6.8 inches
6.7 inches
6.5 inches
Screen Type
Dynamic AMOLED
Super AMOLED Plus
Super AMOLED
Screen Resolution
1440 x 3200 pixels
1080 x 2400 pixels
1080 x 2400 pixels
Pixel Density
516 ppi
393 ppi
405 ppi
Aspect Ratio
20:09
20:09
20:09
Screen Protection
Corning Gorilla Glass
Corning Gorilla Glass v3
Corning Gorilla Glass v3
Screen to Body Ratio
89.44%
91%
91%
Screen Design
Punch-Hole Display
Punch-Hole Display
Punch-Hole Display
Screen Refresh Rate
120 Hz
-
60 Hz
Screen Quality
2K
FHD
FHD
Peak Brightness
1500 nits
420 nits
420 nits
Performance
GPU
Mali-G78 MP14
Adreno 618
Mali-G72 MP3
Operating System
Android v11
Android v10 (Q)
Android v10 (Q)
Chipset
Samsung Exynos 2100
Qualcomm Snapdragon 730G
Samsung Exynos 9 Octa 9611
CPU
Octa core (2.9 GHz, Single core, Cortex X1 + 2.8 GHz, Tri core, Cortex A78 + 2.2 GHz, Quad core, Cortex A55)
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Custom User Interface
Samsung One UI
Samsung One UI
Samsung One UI
Clock Speed
2.9 GHz
2.2 GHz
2.3 GHz
Architecture
64 bit
64 bit
64 bit
Memory & Storage
Phone Variants
256GB 12GB RAM, 512GB 16GB RAM
128GB 6GB RAM, 128GB 8GB RAM
128GB 6GB RAM, 128GB 8GB RAM
Expandable Storage
No
Yes
Yes
Storage Type
UFS 3.1
UFS 2.1
UFS 2.1
OTG Support
Yes
-
-
RAM Type
-
LPDDR4X
LPDDR4X
Expandable Storage Capacity
-
Yes, 512 GB
Yes, 512 GB
Battery
Battery Capacity
5000 mAh
7000 mAh
6000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 25W
Fast, 25W
Fast, 25W
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Wireless Charging
Yes
-
-
General
Announced On
14-Jan-21
31-Aug-20
30-Jul-20
Market Status
Available
Available
Available
Brand
Samsung
Samsung
Samsung
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 93,690
Rs. 22,990
Rs. 18,499
Miscellaneous Features
Sensors
Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Network & Connectivity
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby AtmosHi-Res AudioNoise cancellation microphoneStereo SpeakersStereo Speakers by AKG
Dolby Atmos
Dolby Atmos
NFC
Yes
Yes
No
Bluetooth
Yes
Yes
Yes
FM Radio
No
-
-
3.5mm Audio Jack
No
Yes
Yes
Bluetooth Type
v5.1
v5.0
v5.0
Audio Jack
USB Type-C
3.5 mm
3.5 mm
Design
IP Certification
Yes, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68
-
-
Weight
229 grams
213 grams
203 grams
Colors
Phantom Silver, Phantom Black, Phantom Brown
Celestial Black, Electric Blue
Mirage Black, Mirage Blue
Build
Back: Gorilla Glass
Back: Plastic
Back: Plastic
Dimensions
165.1 x 75.6 x 8.9 mm
163.9 x 76.3 x 9.5 mm
159.3 x 74.4 x 9.3 mm
SAR Value
-
Head: 1.381 W/kg
Head: 1.38 W/kg
Front Camera
Front Video Recording
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
1920x1080 @ 30 fps
3840x2160 @ 30 fps
Front Camera Features
Dual video call, Auto-HDR
HDR
HDR
Front Camera Setup
Single, 40MP
Single, 32MP
Single, 32MP
Front Camera 1 Resolution
40 MP
32 MP
32 MP
Front Camera 1 Type
f/2.2, Wide Angle Primary Camera
f/2.2, Wide Angle Primary Camera
f/2.2 Primary Camera
Front Camera 1 Lens
26 mm focal length, 2.8" sensor size, 0.7 micrometre pixel size
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
Front Sensor
-
Exmor RS
Exmor RS
Front Flash
-
No
No
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, a/ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/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 17) / 800(band 20) / 850(band 26), 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 17) / 800(band 20) / 850(band 26), 3G Bands: UMTS 19...
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 17) / 800(band 20) / 850(band 26), 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 17) / 800(band 20) / 850(band 26), 3G Bands: UMTS 19...
Rear Camera
OIS
Yes
No
No
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
7680x4320 @ 24 fps, 3840x2160 @ 30 fps, 1920x1080 @ 60 fps, 1280x720 @ 960 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
3840x2160 @ 30 fps
Rear Camera Features
Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
10 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Quad, 108MP + 10MP + 10MP + 12MP
Quad, 64MP + 12MP + 5MP + 5MP
Quad, 64MP + 12MP + 5MP + 5MP
Rear Camera 1 Resolution
108 MP
64 MP
64 MP
Rear Camera 1 Type
f/1.8, Wide Angle Primary Camera
f/1.8 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.8 (upto 10x Digital Zoom), Wide Angle Primary Camera
Rear Camera 1 Lens
26 mm focal length, 1.33" sensor size, 0.8 micrometre pixel size
26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
Rear Camera 2 Resolution
10 MP
12 MP
12 MP
Rear Camera 2 Type
f/4.9 Periscope (upto 10x Optical Zoom) Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 2 Lens
240 mm focal length, 3.24" sensor size, 1.22 micrometre pixel size
-
-
Rear Camera 3 Resolution
10 MP
5 MP
5 MP
Rear Camera 3 Type
f/2.4 Telephoto (upto 3x Optical Zoom) Camera
f/2.4, Macro Camera
f/2.4, Macro Camera
Rear Camera 3 Lens
70 mm focal length, 3.24" sensor size, 1.22 micrometre pixel size
-
-
Rear Camera 4 Resolution
12 MP
5 MP
5 MP
Rear Camera 4 Type
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.4, Depth Camera
f/2.4, Depth Camera
Rear Camera 4 Lens
13 mm focal length, 2.55" sensor size, 1.4 micrometre pixel size
-
-
Rear Sensor
-
Exmor-RS CMOS Sensor, ISOCELL Plus
Exmor-RS CMOS Sensor
Sensors
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
On-screen
Side
Side
Fingerprint Scanner Type
Ultrasonic
-
-

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