LG K20 (2019) vs LG K51 Specs Comparison

Design

Dimensions
5.85 x 2.83 x 0.33 inches 148.6 x 71.9 x 8.3 mm	6.57 x 3.07 x 0.33 inches 166.9 x 77.9 x 8.4 mm
Weight
5.40 oz (153.0 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)
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Aurora black, Moroccan blue	Titan gray

Display

Size
5.5-inch	6.5-inch
Resolution
960x480px, 18:9 ratio, 197 PPI	1560x720px, 19.5:9 ratio, 264 PPI
Technology
IPS LCD	IPS LCD
Screen-to-body
71.76 %	79.70 %
Features
Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek MT6739 (28 nm)	MediaTek Helio P22 MT6762 (12 nm)
Processor
Quad-core 1500 MHz ARM Cortex-A53	Octa-core 2000 MHz Arm Cortex-A53
GPU
PowerVR GE8100	IMG PowerVR GE8320
RAM
1GB (LPDDR3)	3GB
Internal storage
16GB	32GB, available to use: 18 GB
Storage expansion
microSDHC up to 32 GB	microSDXC up to 2000 GB
OS
Android (9.0 Pie)	Android (10)

Battery

Capacity
3000 mAh	4000 mAh
Type
Li - Polymer	Li - Ion

Camera

Rear
Single camera	Triple camera
Main camera
8 MP (Autofocus) Aperture size: F2.2 Focal length: 27 mm Sensor size: 1/4" 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
Third camera
	2 MP (Depth information) Sensor size: 1/5" Pixel size: 1.75 μm
Flash
LED	LED
Video recording
1920x1080 (Full HD) (30 fps)	1920x1080 (Full HD) Picture-taking during video recording
Front
5 MP (Flash)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 b,g,n Wi-Fi Direct	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0	Type-C, USB 2.0
Hearing aid compatible
	M3/T3
Location
GPS, A-GPS	GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer	Accelerometer, Gyroscope, Compass

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
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 3(1800), 7(2600), 8(900), 20(800 DD)	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)
4G (TDD)
Bands 38(2600)	Bands 41(2600+)
3G
Bands 1(2100), 2(1900), 5(850), 8(900)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA	LTE-A Cat 6 (300/50 Mbit/s), 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

Regulatory Approval

FCC approval
	Date approved: Jun 16, 2020 FCC ID value: ZNFL555DL
Measured SAR
	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

Buyers information

MSRP
	$ 200
In The Box
Charging adapter, USB-B data cable, Sim card ejector, Instructions for use	Charger, USB Cable, SIM Ejector

Availability

Officially announced
Aug 07, 2019	May 06, 2020

Alternative variants

for Boost Mobile

OS	Android (9.0 Pie)
4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)

for Verizon

4G (FDD)	Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 66(AWS-3)
MSRP	$ 170

for Metro

4G (FDD)	Bands 1(2100), 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)
4G (TDD)	Bands 38(2600), 41(2600+)
3G	Bands 5(850), 4(1700/2100), 2(1900), 1(2100)

Links

Full specifications
LG K20 (2019) Specs	LG K51 Specs
User Reviews
	LG K51 User Reviews