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LG K51S Vs Samsung Galaxy M21 Specs Comparison


Samsung Galaxy M21 packs with Exynos 9611 chipset, 4 GB or 6 GB RAM, 64 GB or 128 GB storage, 6.4" Super AMOLED screen, 6000 mAh battery with 15W fast charging, triple rear camera with 48 MP main sensor + 8 MP ultra-wide lens + 5 MP depth sensor, 20 MP front camera, and 175 $ price on launch.


While LG K51S is equipped with 3 GB RAM, 64 GB storage, 6.55" IPS screen, 4000 mAh battery, quad rear camera with 32 MP main sensor + 5 MP ultra-wide lens + 2 MP depth-sensing lens + 2 MP macro lens and 13 MP front camera.



Here’s an in-depth specifications comparison between LG K51S Vs Samsung Galaxy M21.

Jump to:
  1. System  on  Chip (SOC)
  2. RAM
  3. Storage
  4. Display
  5. Rear Camera 
  6. Front Camera
  7. Battery
  8. Price
  9. Network



Samsung Galaxy M21
LG K51S
Brand and Model   
Brand and Model 
Brand 
Brand 
Samsung
LG
Model
Model 
Galaxy M21
K51S
Galaxy M21 Operating System 
LG K51S Operating System (OS) 
Android 10
Android 10
User Interface (UI)
User Interface (UI)
One UI 2.0




Galaxy M21 System on  Chip (SOC)    LG K51S System on  Chip (SOC)    
SOC SOC 
Samsung Exynos 7 Octa 9611
Process Technology  Process Technology 
10 nm
CPU CPU
4x 2.3 GHz ARM Cortex-A73
4x 1.7 GHz ARM Cortex-A53
CPU Bits 
CPU Bits 
64 bit 64 bit
Instruction Set   Instruction Set  
ARMv8-A ARMv8-A
CPU Frequency 
2300 MHz 2300 MHz 
CPU Cores  CPU Cores 
8 8
GPU GPU
ARM Mali-G72 MP3
 GPU Cores GPU Cores
3



Galaxy M21 RAM Capacity LG K51S RAM Capacity 
4 GB
3 GB 
6 GB
RAM Type   RAM Type  
LPDDR4X
RAM Channels  
RAM Channels  
Double channel



Galaxy M21 Storage
LG K51S Storage 
64 GB 64 GB 
128 GB
UFS 2.1
Galaxy M21 Memory Cards LG K51S Memory Cards 
microSD microSD
microSDHC
microSDHC
microSDXC microSDXC



Galaxy M21 Display
LG K51S Display 
Type / Technology  Type / Technology 
Super AMOLED IPS
Diagonal Size  Diagonal Size 
6.4 in 6.55 in 
162.56 mm 166.37 mm 
16.26 cm 16.64 cm 
Width  Width 
2.68 in 2.8 in 
68.12 mm
71.22 mm 
6.81 cm 7.12 cm 
Height  Height 
5.81 in 5.92 in 
147.6 mm 150.35 mm 
14.76 cm 15.04 cm 
Aspect Ratio  Aspect Ratio 
2.167:1 2.111:1
Resolution  Resolution 
1080 x 2340 pixels 720 x 1520 pixels
Pixel Density  Pixel Density 
403 ppi (pixels per inch) 257 ppi (pixels per inch)
158 ppcm (pixels per centimeter) 101 ppcm (pixels per centimeter)
Color Depth  Color Depth 
24 bit 24 bit
16777216 colors 16777216 colors
Display Area  Display Area 
84.48% 84.79%
Other Features  Other Features 
Capacitive Capacitive
Multi-touch Multi-touch
Infinity U Display
2.5D curved glass screen
Corning Gorilla Glass 3
Peak brightness - 420 cd/m²
78960:1
Galaxy M21 Sensors LG K51S Sensors 
Proximity Proximity
Light
Accelerometer Accelerometer
Compass
Gyroscope
Geomagnetic
Fingerprint Fingerprint
Virtual Light Sensor



Galaxy M21 Rear Camera LG K51S Rear Camera 
Sensor type  Sensor type 
CMOS BSI (backside illumination) CMOS
Sensor format Sensor format
1/2"
Pixel size Pixel size
0.8 µm (micrometers)
0.000800 mm
Aperture Aperture
f/2
Focal Length  Focal Length
26 mm *(35 mm / full frame)
Flash Type Flash Type
LED Dual LED
 Image Resolution   Image Resolution 
8000 x 6000 pixels
48 MP 32 MP 
Video resolution Video resolution
3840 x 2160 pixels 1920 x 1080 pixels
8.29 MP 2.07 MP 
Video FPS Video FPS
30 fps 30 fps (frames per second)
Features  Features 
Autofocus Autofocus
Continuous shooting Continuous shooting
Digital zoom Digital zoom
Digital image stabilization
Geotagging Geotagging
Panorama Panorama
HDR HDR
Touch focus Touch focus
Face detection Face detection
White balance settings White balance settings
ISO settings ISO settings
Exposure compensation Exposure compensation
Self-timer Self-timer
Scene mode Scene mode
Macro mode
Phase detection autofocus (PDAF) Phase detection autofocus (PDAF)
Secondary rear camera - 8 MP (ultra-wide angle) Secondary rear camera - 5 MP (ultra-wide)
Sensor size - 1/4" (#2)
Pixel size - 1.12 µm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 123° (#2)
Third rear camera - 5 MP (depth) Third rear camera - 2 MP (depth-sensing)
Aperture size - f/2.2 (#3)
Fourth rear camera - 2 MP (macro)



Galaxy M21 Front Camera LG K51S Front Camera
Sensor Type Sensor Type
CMOS BSI (backside illumination) CMOS 
Aperture Aperture
f/2 f/2
Focal length  Focal length 
26 mm *(35 mm / full frame)
Image Resolution  Image Resolution 
4160 x 3120 pixels
20 MP 12.98 MP 
Video Resolution Video Resolution
1920 x 1080 pixels 1920 x 1080 pixels
2.07 MP 2.07 MP 
Video FPS Video FPS
30 fps 30 fps (frames per second)
Features  Features 
Face unlock Face unlock
Galaxy M21 Audio
LG K51S Audio 
Speaker Speaker
Loudspeaker Loudspeaker
Earpiece Earpiece
Dolby Atmos for stereo headsets DTS:X 3D Surround Sound
Widevine L1 Certification
Galaxy M21 Radio LG K51S Radio 
Yes No
RDS
Galaxy M21 Tracking /  Positioning  LG K51S Tracking /  Positioning
GPS GPS
A-GPS A-GPS
GLONASS GLONASS
BeiDou BeiDou



Galaxy M21 Wi-Fi LG K51S Wi-Fi 
802.11a (IEEE 802.11a-1999)
802.11b (IEEE 802.11b-1999) 802.11b (IEEE 802.11b-1999)
802.11g (IEEE 802.11g-2003) 802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009) 802.11n (IEEE 802.11n-2009)
802.11n 5GHz
802.11ac (IEEE 802.11ac)
Wi-Fi Hotspot Dual band
Wi-Fi Direct Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
Galaxy M21 Bluetooth LG K51S Bluetooth 
Version  Version 
5 5
Features  Features 
A2DP (Advanced Audio Distribution Profile) A2DP (Advanced Audio Distribution Profile)
LE (Low Energy) LE (Low Energy)
Galaxy M21 USB LG K51S USB 
Connector Type   Connector Type  
USB Type-C USB Type-C
Version Version 
2 2
Features  Features 
Charging Charging
Mass storage Mass storage
On-The-Go On-The-Go
Galaxy M21 Headphone Jack LG K51S Headphone Jack 
Yes Yes
Galaxy M21 Connectivity LG K51S Connectivity 
Computer sync Computer sync
OTA sync OTA sync
Tethering Tethering
DLNA
NFC
NFC is market-dependent
Galaxy M21 Browser LG K51S Browser 
HTML HTML
HTML5 HTML5
CSS 3 CSS 3
Galaxy M21 Audio File Formats /  Codecs    LG K51S Audio File Formats /  Codecs    
AAC (Advanced Audio Coding) AAC (Advanced Audio Coding)
AAC+ / aacPlus / HE-AAC v1
AC3 / AC-3
AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga) AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga)
AMR-WB (Adaptive Multi-Rate Wideband, .awb) AMR-WB (Adaptive Multi-Rate Wideband, .awb)
aptX / apt-X
aptX HD / apt-X HD / aptX Lossless
eAAC+ / aacPlus v2 / HE-AAC v2 eAAC+ / aacPlus v2 / HE-AAC v2
FLAC (Free Lossless Audio Codec, .flac) FLAC (Free Lossless Audio Codec, .flac)
M4A (MPEG-4 Audio, .m4a)
MIDI MIDI
MP3 (MPEG-2 Audio Layer II, .mp3) MP3 (MPEG-2 Audio Layer II, .mp3)
OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus) OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus)
WMA (Windows Media Audio, .wma) WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave) WAV (Waveform Audio File Format, .wav, .wave)
Galaxy M21 Video File Formats /  Codecs LG K51S    Video File Formats /  Codecs    
3GPP (3rd Generation Partnership Project, .3gp) 3GPP (3rd Generation Partnership Project, .3gp)
3GPP2 (3rd Generation Partnership Project 2, .3g2)
AVI (Audio Video Interleaved, .avi) AVI (Audio Video Interleaved, .avi)
Flash Video (.flv, .f4v, .f4p, .f4a, .f4b)
H.263 H.263
H.264 / MPEG-4 Part 10 / AVC video H.264 / MPEG-4 Part 10 / AVC video
H.265 / MPEG-H Part 2 / HEVC
MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks)
MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v) MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v)
VC-1 VC-1
VP8 VP8
VP9 VP9
WebM WebM
WMV (Windows Media Video, .wmv) WMV (Windows Media Video, .wmv)
WMV7 (Windows Media Video 7, .wmv)
WMV8 (Windows Media Video 8, .wmv)
Xvid Xvid



Galaxy M21 Battery LG K51S Battery 
Capacity Capacity
6000 mAh 4000 mAh 
Type  Type 
Li-Ion Li-Polymer
Features  Features 
Fast charging Non-removable
Non-removable
 Charger Output Power Charger Output Power
5 V / 3 A
Galaxy M21 Launch LG K51S Launch 
Announced  Announced 
 2020, 19th March  2020, 19th February
Status Status 
Release 23th March 2020 Exp. Release April 2020



Galaxy M21 Price LG K51S Price 
4 GB + 64 GB = 175 $
Galaxy M21 Design LG K51S Design 
Colors  Colors 
Midnight Blue Titanium
Raven Black Pink
Blue
 Certification
MIL-STD-810G
Width  Width 
75.1 mm 76.7 mm 
7.51 cm 7.67 cm 
0.25 ft 0.25 ft 
2.96 in 3.02 in 
Height  Height 
159 mm 165.2 mm 
15.9 cm 16.52 cm 
0.52 ft 0.54 ft 
6.26 in 6.5 in 
Thickness  Thickness 
8.9 mm 8.2 mm 
0.89 cm 0.82 cm 
0.03 ft 0.03 ft 
0.35 in 0.32 in 
Weight  Weight 
188 g
0.41 lbs
6.63 oz
Volume  Volume 
106.27 cm³ 103.9 cm³  )
6.45 in³ 6.31 in³ 
Body Materials Body Materials
Plastic Polycarbonate
Galaxy M21 SIM Card LG K51S SIM Card 
SIM Card Type   SIM Card Type  
Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm) Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Nano-SIM / microSD
Number of SIM Cards  Number of SIM Cards 
2 2
Features Features
Dual SIM stand-by Single-SIM version is available
Galaxy M21 Mobile Network Technology and Bandwidth Mobile Network Technology and Bandwidth
UMTS (384 kbit/s ) UMTS (384 kbit/s )
EDGE EDGE
GPRS GPRS
HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s ) HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s )
LTE LTE Cat 6 (51.0 Mbit/s , 301.5 Mbit/s )



Galaxy M21 Networks LG K51S Networks    
GSM GSM
GSM 850 MHz (B5) GSM 850 MHz (B5)
GSM 900 MHz (B8) GSM 900 MHz (B8)
GSM 1800 MHz (B3) GSM 1800 MHz (B3)
GSM 1900 MHz (B2) GSM 1900 MHz (B2)
UMTS UMTS
UMTS 850 MHz (B5) UMTS 850 MHz (B5)
UMTS 900 MHz (B8) UMTS 900 MHz (B8)
UMTS 1900 MHz (B2) UMTS 1900 MHz (B2)
UMTS 2100 MHz (B1) UMTS 2100 MHz (B1)
LTE LTE
LTE-FDD 800 MHz (B20) LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8) LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3) LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1) LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7) LTE-FDD 2600 MHz (B7)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)

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