Alcatel 3X (2019) vs LG K51 Specs Comparison

Design

Dimensions
6.49 x 2.98 x 0.33 inches 164.8 x 75.8 x 8.39 mm	6.57 x 3.07 x 0.33 inches 166.9 x 77.9 x 8.4 mm
Weight
6.28 oz (178.0 g)	7.17 oz (203.4 g)
Resistance
	Yes; MIL-STD-810 certified
Biometrics
Fingerprint (touch)	Fingerprint (touch)
Keys
Left: Other; Right: Volume control, Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Jewelry Black	Titan gray

Display

Size
6.5-inch	6.5-inch
Resolution
1600x720px, 20:9 ratio, 269 PPI	1560x720px, 19.5:9 ratio, 264 PPI
Technology
	IPS LCD
Screen-to-body
82.25 %	79.70 %
Features
Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek MT6763V/V	MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core 2000 MHz	Octa-core 2000 MHz Arm Cortex-A53
GPU
ARM Mali G71 MP2	IMG PowerVR GE8320
RAM
4GB	3GB
Internal storage
64GB, available to use: 55 GB	32GB, available to use: 18 GB
Storage expansion
microSDXC up to 128 GB	microSDXC up to 2000 GB
OS
Android (9.0 Pie)	Android (10)

Battery

Capacity
4000 mAh	4000 mAh
Type
	Li - Ion

Camera

Rear
Triple camera	Triple camera
Main camera
16 MP (PDAF) Aperture size: F1.8 Focal length: 27 mm Sensor size: 1/2.8" Pixel size: 1.12 μm	13 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3" Pixel size: 1.12 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 17 mm Sensor size: 1/4" Pixel size: 1.12 μm	5 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Third camera
5 MP (Depth information) Aperture size: F2.4 Sensor size: 1/5" Pixel size: 1.12 μm	2 MP (Depth information) Sensor size: 1/5" Pixel size: 1.75 μm
Flash
Dual LED	LED
Video recording
1920x1080 (Full HD) (30 fps)	1920x1080 (Full HD) Picture-taking during video recording
Front
8 MP, Video capture: 1280x720 (HD) (30 fps)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
4.2	5.0
WLAN
802.11 b,g,n Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 2.0
Hearing aid compatible
M3	M3/T3
Location
GPS, A-GPS, Cell ID, Wi-Fi positioning	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	FM
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)	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), 40(2300)	Bands 41(2600+)
3G
Bands 5(850), 8(900), 2(1900), 1(2100)	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 11 Mbit/s, UMTS	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	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
	Charger, USB Cable, SIM Ejector

Availability

Officially announced
Sep 05, 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
Alcatel 3X (2019) Specs	LG K51 Specs
User Reviews
	LG K51 User Reviews