LG K31 vs Samsung Galaxy A42 Specs Comparison

Availability

Officially announced
	Sep 02, 2020
Prices (MSRP)
$150	€340

Design

Dimensions
5.82 x 2.8 x 0.34 inches 147.8 x 71.1 x 8.6 mm	6.47 x 2.99 x 0.34 inches 164.4 x 75.9 x 8.6 mm
Weight
5.15 oz (146.0 g)	6.81 oz (193.0 g)
Materials
Back: Plastic Frame: Plastic
Resistance
Yes; MIL-STD-810 certified
Biometrics
Fingerprint (touch)	Optical in-screen fingerprint
Keys
Left: Volume control; Right: Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Silver	Prism Dot black, Prism Dot white, Prism Dot grey

Display

Size
5.7-inch, 77.13% screen-to-body	6.6-inch, 84.26% screen-to-body
Type
IPS LCD	Super AMOLED, 60Hz
Resolution
1520x720px, 19:9 ratio, 295 PPI	1600x720px, 20:9 ratio, 266 PPI

Hardware

System chip
MediaTek Helio P22 MT6762 (12 nm)	Snapdragon 750G SM7225 (8 nm)
Processor
Octa-core 2000 MHz Arm Cortex-A53	Octa-core 2x2.2GHz Kryo 570 6x1.8GHz Kryo 570
GPU
IMG PowerVR GE8320	Adreno 619
Memory
2GB/32GB	4GB (LPDDR4)/128GB
Storage expansion
microSDXC up to 32 GB	microSDXC up to 1000 GB
OS
Android (10)	Android (12, 11, 10)

Battery

Type
3000 mAh	5000 mAh
Charging
	Samsung Adaptive Fast Charging
Charge speed
	Wired: 15.0W

Camera

Rear
Dual camera	Quad camera
Main camera
13 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3" Pixel size: 1.12 μm	48 MP (PDAF) Aperture size: F1.8 Pixel size: 0.8 μm
Second camera
5 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm	8 MP (Ultra-wide) Aperture size: F2.2
Third camera
	5 MP (Macro) Aperture size: F2.4
Fourth camera
	5 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
1080p (30 fps)	4K UHD (30 fps), 720p (480 fps)
Front
5 MP Video capture: 1080p	20 MP (Autofocus)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
b,g,n Wi-Fi Direct, Hotspot 802.11 b, g, n	a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
microUSB, USB 2.0	Type-C, USB 2.0
Sensors
Accelerometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
UMA (Wi-Fi Calling)	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

5G Bands
	n1, n3, n5, n7, n8, n28, Sub-6
4G (FDD) Bands
2, 4, 5, 12, 13, 25, 26, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28
4G (TDD) Bands
41	38, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A Cat 7 (300/100 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

Regulatory Approval

FCC approval
Date approved: Sep 14, 2020 FCC ID value: ZNFK300AM	Date approved: Apr 08, 2021 FCC ID value: A3LSMA426U
Measured SAR
Head: 0.47 W/kg Body: 0.91 W/kg Simultaneous Transmission: 1.26 W/kg Wireless Router: 1.02 W/kg	Head: 1.11 W/kg Body: 1.25 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.06 W/kg Phablet: 3.81 W/kg

Links

Full specifications
LG K31 Specs	Samsung Galaxy A42 Specs