LG K51 vs Samsung Galaxy A21s

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from $200
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Display

Size

6.5 inches
6.5 inches

Resolution

1560 x 720 pixels, 19.5:9 ratio,
264 PPI
1600 x 720 pixels, 20:9 ratio,
270 PPI

Technology

IPS LCD
TFT

Screen-to-body

79.70 %
82.94 %

Features

Ambient light sensor, Proximity sensor
Proximity sensor

Hardware

System chip

MediaTek Helio P22 MT6762
Samsung Exynos 850

Processor

Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit

GPU

IMG PowerVR GE8320
Mali-G76

RAM

3GB
3GB LPDDR4

Internal storage

32GB, available to use: 18 GB
32GB (eMMC 5.1), available to use: 19.5 GB

Storage expansion

microSDXC up to 2000 GB
microSDXC up to 512 GB

Device type

Smartphone
Smartphone

OS

Android (10)
Android (10), Samsung One UI

Battery

Capacity

4000 mAh
5000 mAh

Type

Li - Ion, Not user replaceable
Li - Polymer, Not user replaceable

Battery life test results

 

Charging

 
Fast charging

Camera

Rear

Triple camera
Quad camera

Main camera

13 MP (PDAF)
48 MP (PDAF)

Specifications

Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

5 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

2 MP (Depth information)
2 MP (Macro)

Specifications

Sensor size: 1/5"; Pixel size: 1.75 μm
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Specifications

 
Aperture size: F2.4

Video recording

1920x1080 (Full HD)
1920x1080 (Full HD) (30 fps)

Features

Picture-taking during video recording
 

Front

13 MP
13 MP

Design

Dimensions

6.57 x 3.07 x 0.33 inches (166.9 x 77.9 x 8.4 mm)
6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)

Weight

7.17 oz (203.4 g)
the average is 6.3 oz (179 g)
6.77 oz (192.0 g)
the average is 6.3 oz (179 g)

Resistance

Yes; MIL-STD-810 certified
 

Biometrics

Fingerprint (touch)
2D Face unlock, Fingerprint (touch)

Keys

Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors

Titan gray
Black, White, Blue, Red

Cellular

LTE (FDD)

Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 25(1900+), 26(850+), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)

LTE (TDD)

Bands 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data Speed

LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

 
Yes

SIM type

Nano SIM
Nano SIM

HD Voice

Yes
 

VoLTE

Yes
 

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features

DTS:X Virtual Surround
 

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
 

Additional microphone(s)

for Noise cancellation
 

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0

Features

Charging
Charging

Location

GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope

Other

 
NFC

Hearing aid compatible

M3, T3
 

Buyers information

Price

$ 200
€ 240

User Manual

Download the LG K51 Manual as a PDF file.
Download the Samsu​ng Galaxy A21s Manual as a PDF file.

In The Box

Charger, USB Cable, SIM Ejector
 

Availability

Officially announced

May 06, 2020
May 15, 2020
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
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