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LG K31 vs LG K51 vs Samsung Galaxy A32

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

5.7 inches
6.5 inches
6.5 inches

Resolution:

1520 x 720 pixels, 19:9 ratio, 295 PPI
1560 x 720 pixels, 19.5:9 ratio, 264 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

IPS LCD
IPS LCD
TFT

Refresh rate:

60Hz

Screen-to-body:

77.13 %
79.70 %
81.58 %

Features:

Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip:

MediaTek Helio P22 MT6762
MediaTek Helio P22 MT6762
MediaTek Dimensity 720 MT6853

Processor:

Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2000 MHz, Cortex-A76 and Cortex-A55, 64-bit, 7 nm

GPU:

IMG PowerVR GE8320
IMG PowerVR GE8320
Mali-G57 MC3

RAM:

2GB
3GB
4GB LPDDR4

Internal storage:

32GB, available to use: 17 GB
32GB, available to use: 18 GB
64GB (UFS 2.2)

Storage expansion:

microSDXC up to 32 GB
microSDXC up to 2000 GB
microSDXC up to 1024 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10)
Android (10)
Android

Battery

Capacity:

3000 mAh
4000 mAh
5000 mAh

Type:

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

Max charge speed:

Wired: 15.0W

Camera

Rear:

Dual camera
Triple camera
Quad camera

Main camera:

13 MP (PDAF)
13 MP (PDAF)
48 MP (Autofocus, PDAF)

Specifications:

Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F1.8

Second camera:

5 MP (Ultra-wide)
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: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2

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) (30 fps)
1920x1080 (Full HD)
3840x2160 (4K UHD) (30 fps)

Features:

Picture-taking during video recording

Front:

5 MP
13 MP
13 MP

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

5.82 x 2.8 x 0.34 inches (147.8 x 71.1 x 8.6 mm)
6.57 x 3.07 x 0.33 inches (166.9 x 77.9 x 8.4 mm)
6.46 x 3.00 x 0.36 inches (164.2 x 76.1 x 9.1 mm)

Weight:

5.15 oz (146.0 g)
7.17 oz (203.4 g)
7.23 oz (205.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Metal

Resistance:

Yes; MIL-STD-810 certified
Yes; MIL-STD-810 certified

Biometrics:

Fingerprint (touch)
Fingerprint (touch)
Fingerprint (touch)

Keys:

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

Colors:

Silver
Titan gray
Awesome black, Awesome white, Awesome blue, Awesome violet

Cellular

5G:

n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n66, n78, n79

LTE (FDD):

Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
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), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)

LTE (TDD):

Bands 41(2600+)
Bands 41(2600+)

UMTS:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE-A Cat 7 (300/100 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
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:

Shared with microSD

SIM type:

Nano SIM
Nano SIM
Nano SIM

HD Voice:

Yes
Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features:

DTS:X Virtual Surround
Dolby Atmos, Dolby Digital, Dolby Digital Plus

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.0

Wi-Fi:

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

USB:

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

Features:

Charging
Charging
Charging

Location:

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

Sensors:

Accelerometer
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Other:

UMA (Wi-Fi Calling)
NFC

Hearing aid compatible:

M3, T3
M3, T3

Regulatory Approval

FCC approval:

Date approved:

Sep 14, 2020
Jun 16, 2020
Mar 08, 2021

FCC ID value:

ZNFK300AM
ZNFL555DL
A3LSMA326U

Measured SAR:

Head:

0.47 W/kg
0.66 W/kg
0.57 W/kg

Body:

0.91 W/kg
1.20 W/kg
1.17 W/kg

Simultaneous Transmission:

1.26 W/kg
1.59 W/kg
1.59 W/kg

Wireless Router:

1.02 W/kg
1.27 W/kg
1.02 W/kg

Phablet:

3.96 W/kg

Buyers information

Price:

$ 150
$ 200
€ 280

User Manual:

This is the official LG K31 User Guide in English provided from the manufacturer.
This is the official LG K51 User Guide in English provided from the manufacturer.

In The Box:

Travel Adapter, USB Cable
Charger, USB Cable, SIM Ejector

Availability

Officially announced:

May 06, 2020
Jan 13, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless