LG K31 vs LG K51 Specs Comparison

Availability

Officially announced
	May 06, 2020
Prices (MSRP)
$150	$200

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
Weight
5.15 oz / 146.0 g	7.17 oz / 203.4 g
Materials
Back: Plastic Frame: Plastic
Resistance
Yes; MIL-STD-810 certified	Yes; MIL-STD-810 certified
Biometrics
Fingerprint (touch)	Fingerprint (touch)
Keys
Left: Volume control; Right: Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Silver	Titan gray

Display

Size
5.7-inch, 77.13% screen-to-body	6.5-inch, 79.70% screen-to-body
Type
IPS LCD	IPS LCD
Resolution
1520x720px, 19:9 ratio, 295 PPI	1560x720px, 19.5:9 ratio, 264 PPI

Hardware

System chip
MediaTek Helio P22 MT6762 (12 nm)	MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core 2000 MHz Arm Cortex-A53	Octa-core 2000 MHz Arm Cortex-A53
GPU
IMG PowerVR GE8320	IMG PowerVR GE8320
Memory
2GB/32GB	3GB/32GB
Storage expansion
microSDXC up to 32 GB	microSDXC up to 2000 GB
OS
Android (10)	Android (10)

Battery

Type
3000 mAh	4000 mAh, Li - Ion

Camera

Rear
Dual camera	Triple camera
Main camera
13 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3" Pixel size: 1.12 μm	13 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3" Pixel size: 1.12 μm
Second camera
5 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm	5 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Third camera
	2 MP (Depth information) Sensor size: 1/5" Pixel size: 1.75 μm
Flash
LED	LED
Video recording
1080p (30 fps)	1080p Picture-taking during video recording
Front
5 MP Video capture: 1080p	13 MP Video capture: 1080p

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	M3/T3
Location
GPS, A-GPS, Cell ID, Wi-Fi positioning	GPS, A-GPS, Cell ID, Wi-Fi positioning
Other
UMA (Wi-Fi Calling)

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
	DTS:X Virtual Surround
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD) Bands
2, 4, 5, 12, 13, 25, 26, 66, 71	2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 66, 71
4G (TDD) Bands
41	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 Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM	Nano SIM
HD Voice
Yes	Yes
VoLTE
	Yes

Regulatory Approval

FCC approval
Date approved: Sep 14, 2020 FCC ID value: ZNFK300AM	Date approved: Jun 16, 2020 FCC ID value: ZNFL555DL
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: 0.66 W/kg Body: 1.20 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.27 W/kg Phablet: 3.96 W/kg

Alternative variants

for Boost Mobile

OS	Android (9.0 Pie)
4G (FDD) Bands	2, 4, 5, 12, 13, 25, 26, 66, 71

for Verizon

4G (FDD) Bands	2, 3, 4, 5, 7, 12, 13, 20, 66
Prices (MSRP)	$170

for Metro

4G (FDD) Bands	1, 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 66, 71
4G (TDD) Bands	38, 41
3G Bands	5, 4, 2, 1

Discover more

Full Specs LG K31 Specs

Full Specs LG K51 Specs