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Samsung Galaxy S21 vs LG K51 (K500UMT3)

Side by side comparison between Samsung Galaxy S21 vs LG K51 phones, differences, pros, cons with full specifications. What's the better?

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Compare LG K51 XSamsung Galaxy S2133Points
Samsung Galaxy S21
6.2"
AMOLED

1080x2400

12.2
MP

10mp

8GB
RAM

64bit Octa

4000
mAh

(Non removable)

vs
LG K51 (K500UMT3)
6.5"
IPS

720x1560

13
MP

13mp

3GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Galaxy S2133 Advantages Samsung Galaxy S21vsK51 (K500UMT3)5 Advantages LG K51 (K500UMT3)
+2.9Ghz 64bit Octa-Core50%
More powerful processor, you can open your applications faster
vs2Ghz 64bit Octa-Core
+8GB LPDDR5167%
More RAM memory. Typically more responsive and better for multitasking.
vs3GB LPDDR3
+128GB (104GB available)5 times
More internal storage for applications and files
vs32GB (18GB available)
+UFS 3.0Advantage
Fastest write and read storage.
vseMMC 5.1
+169 grams (5.92 ounces)21%
Lighter
vs204 grams (7.14 ounces)
+7.9 millimeters (0.31 inches)7%
Thinner
vs8.47 millimeters (0.33 inches)
+Aluminum body, glass front, plastic backAdvantage
More resistant material
vsPlastic body, glass front
+Dynamic AMOLEDAdvantage
Dynamic AMOLED display is brighter and more vivid
vsTFT IPS LCD
+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
vsNot supported
+120Hz100%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
vs60Hz
+1080x2400 pixels131%
Higher resolution screen
vs720x1560 pixels
+424 PPI61%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs264 PPI
+(triple camera) 12.2MP + 64MP + 12MP3 times
Higher resolution main camera
vs(triple camera) 13MP + 5MP + 2MP
+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
vsOnly digital zoom
+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
vsEIS: Digital stabilization
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+1/1.76" inches70%
The larger sensor camera lets you take photos with better depth.
vs1/3" inches
+8K UHD (7680x4320)15 times
More image quality for recording videos with the primary camera
vsFull HD (1920x1080)
+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
vs(front) Full HD (1920x1080)
+Android 11Advantage
Android 11 is newer and safer
vsAndroid 10
+5G NRAdvantage
The 5G NR network is newer and faster
vs4G+ LTE-A
+(5G NR) 5000 Mbps16 times
Faster for surfing the internet and download files
vs(4G+ LTE-A) 300 Mbps
+BarometerAdvantage
Sensors help you use the device
vsNot supported
+Face unlockAdvantage
Sensors help you use the device
vsNot supported
+ANT+Advantage
Sensors help you use the device
vsNot supported
+25W150%
More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
vs10W
+Qi wireless charging (Qi/PMA)Advantage
Wireless charging is another way to charge the battery.
vsNot supported
+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage
It's more advantageous to have more than one phone operator in the same device
vs1 slot (Single-SIM)
(dedicated slot)
+FMAdvantage
The radio lets you listen to your songs and sports in general
vsNot supported
+802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO is newer and faster
vs802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.
vsUSB 2.0 Type-C, USB OTG On-The-Go
Not supportedvs+Until 1TB microSD, microSDXCAdvantage
More external storage for files using memory cards
6.2"vs+6.5"5%
Larger screen
(front) 10MPvs+(front) 13MP27%
Higher resolution secondary camera to take pictures and selfies
Type-C reversible connectorvs+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
IP68 certifiedvs+MIL-STD-810G military certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

23 Common items in both devices
16 million
LED flash
PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus
HDR photo/video on both cameras / HDR photo on both cameras
f/1.8 (aperture)
Capacitive
Multitouch
+16 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresSamsung Galaxy S21LG K51 (K500UMT3)
ModelGalaxy S21K51 (K500UMT3)
Other model namesGalaxy S21 5G SM-G991B/DSLG K51 (T-Mobile) LMK500UMT3ATMOTN, LM-K500UMT3
Country or region available(Global, International)
(Global, International)
USA
USA
BrandSamsungLG
Release dateJanuary, 2021May, 2020
Depth7.9 millimeters (0.31 inches)8.47 millimeters (0.33 inches)
Size (width x height)71.2 x 151.7 millimeters (2.8 x 5.97 in)77.92 x 166.96 millimeters (3.07 x 6.57 in)
Weight169 grams (5.92 ounces)204 grams (7.14 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsAluminum body, glass front, plastic backPlastic body, glass front
Protection against water and othersIP68 certified: dust proof and waterproof over 1.5 meter and 30minMIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
System (OS)Samsung Galaxy S21LG K51 (K500UMT3)
Operating systemAndroid 11Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy S21LG K51 (K500UMT3)
Chipset64bit - Samsung Exynos 2100 (5nm)64bit - MediaTek MT6762 Helio P22 (12nm)
CPU processorOcta-Core, 3 processors:
2.9Ghz Single-Core ARM Cortex-X1
2.8Ghz 3-Cores ARM Cortex-A78
2.2Ghz Quad-Core ARM Cortex-A55
Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A53
1.5Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerARM Mali-G78 MP14PowerVR GE8320 650Mhz
RAM memory8GB LPDDR53GB LPDDR3
Internal storage128GB (104GB available)
UFS 3.0
32GB (18GB available)
eMMC 5.1
External storageNot supportedUntil 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy S21LG K51 (K500UMT3)
Display typeDynamic AMOLEDTFT IPS LCD
Screen size6.2" inches6.5" inches
Screen-to-body ratio~85.9% (screen-to-body ratio)~79.7% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)720x1560 pixels (19.5:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)424 PPI264 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass VictusPanda King Glass
Display features120Hz, 1300 nits, HDR10+60Hz
Mobile networksSamsung Galaxy S21LG K51 (K500UMT3)
Dual-SIMDual-SIM Standby - Call active on one sim cardNot supported
SIM card2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
1 slot (Single-SIM)
nano-SIM (4FF)
Maximum download/upload5000/1920 Mbps300/50 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800/1900, GSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 850/900/1700/1900/2100
UMTS 850/900/1900/2100
Primary 4G networkLTE Cat24 ()
TD-LTE ()
VoLTE
LTE Cat6 (1, 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 66, 71)
TD-LTE (38, 41)
Primary 5G networkSA/NSA/Sub6 ()Not supported
Primary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA, 5G NRGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900Not supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGENot supported
CallingSamsung Galaxy S21LG K51 (K500UMT3)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
CameraSamsung Galaxy S21LG K51 (K500UMT3)
Back camera (main camera)(triple camera)
12.2 megapixels
64MP telephotof/2.029mm1/1.72"0.8µmPDAFOIS1.1x-optical-zoom3x-hybrid-zoom
12MP ultrawidef/2.213mm120º1/2.55"1.4µmSuper-Steady-video
(triple camera)
13 megapixels
5MP ultrawidef/2.21.12μm1/5"115º
2MP depthf/2.41.75μm1/5"85º
Main camera resolution4032x3024 pixels4128x3096 pixels
Video recording (primary)8K UHD (7680x4320) 24 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.76" inches1/3" inches
Pixel size1.8µm pixel1.12µm pixel
AutofocusPDAF: phase detection autofocus on both camerasPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationOIS: Optical stabilizationEIS: Digital stabilization
ZoomDigital and optical zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedNot supported
HDRHDR photo/video on both camerasHDR photo on both cameras
2ª cameraSamsung Galaxy S21LG K51 (K500UMT3)
Front camera (secondary)10 megapixels13 megapixels
Front camera resolution3872x2592 pixels4128x3096 pixels
Video recording (secondary)4K UHD (3840x2160)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.0 (aperture)
Focal length26mm lensfeature not registered
Sensor size1/3.24" inches1/3" inches
Pixel size1.22µm pixel1.12µm pixel
MultimediaSamsung Galaxy S21LG K51 (K500UMT3)
RadioFMNot supported
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy S21LG K51 (K500UMT3)
USBUSB 3.2 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputUSB Type-C (reversible)Not supported
Audio outputType-C reversible connector3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNASupportedNot supported
NFCSupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy S21LG K51 (K500UMT3)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Barometer
Gesture
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Fingerprint sensor (rear-mounted)
Other features- Colors: Phantom Gray, White, Violet, Pink
- One UI 3.1
- Always-on display
- Tuned by AKG
- 32-bit/384kHz audio
- Samsung Pay (Visa, MasterCard)
- Samsung DeX
- WiFi direct, hotspot
- Colors: Titan gray
- Google Assistant
- DTS:X 3D sound surround
- HAC M3/T3
- WiFi direct, hotspot
Power supplySamsung Galaxy S21LG K51 (K500UMT3)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity4000 mAh4000 mAh
Charger, watts25W Fast battery charging
15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging between devices
USB Power Delivery 3.0
10W (5V/2A) Standard charging
Talk time autonomyfeature not registered1260 minutes | 21 hours | 0.9 day
Standbyfeature not registered34560 minutes | 576 hours | 24 days
Radiation rateSamsung Galaxy S21LG K51 (K500UMT3)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.456W/kg (head) | 1.509W/kg (body)feature not registered
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