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LG X Mach vs LG X Power vs LG K51

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

Comparison mode:

Display

Size:

5.5 inches
5.3 inches
6.5 inches

Resolution:

2560 x 1440 pixels, 538 PPI
1280 x 720 pixels, 277 PPI
1560 x 720 pixels, 19.5:9 ratio, 264 PPI

Technology:

IPS LCD
IPS LCD
IPS LCD

Screen-to-body:

73.16 %
69.43 %
79.70 %

Colors:

16 777 216

Peak brightness:

400 cd/m2 (nit)

Touchscreen:

Capacitive, Multi-touch

Features:

Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 808 MSM8992
Qualcomm Snapdragon 212 8909 v2
MediaTek Helio P22 MT6762

Processor:

Hexa-core, 1800 MHz, ARM Cortex-A57 and ARM Cortex-A53, 64-bit
Quad-core, 1300 MHz, ARM Cortex-A7, 28 nm
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU:

Adreno 418
Adreno 304
IMG PowerVR GE8320

RAM:

3GB LPDDR3
1.5GB
3GB

Internal storage:

32GB
16GB, available to use: 9.75 GB
32GB, available to use: 18 GB

Storage expansion:

microSDXC up to 2000 GB
microSDXC up to 2000 GB
microSDXC up to 2000 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (6.0 Marshmallow), LG UX UI
Android (6.0 Marshmallow), LG UX UI
Android (10)

Battery

Capacity:

3000 mAh
4100 mAh
4000 mAh

Type:

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

Charging:

Fast charging

Camera

Rear:

Single camera
Single camera
Triple camera

Main camera:

12.3 MP (Autofocus)
8 MP (Autofocus)
13 MP (PDAF)

Specifications:

Pixel size: 1.55 μm
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm

Second camera:

5 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm

Third camera:

2 MP (Depth information)

Specifications:

Sensor size: 1/5"; Pixel size: 1.75 μm

Video recording:

3840x2160 (4K UHD) (30 fps)
1280x720 (HD) (30 fps)
1920x1080 (Full HD)

Features:

Time-lapse video, EIS, Video calling, Video sharing
Picture-taking during video recording, Video calling, Video sharing
Picture-taking during video recording

Front:

8 MP
5 MP
13 MP

Video capture:

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

Design

Dimensions:

5.87 x 3.01 x 0.35 inches (149.1 x 76.5 x 8.9 mm)
5.86 x 2.95 x 0.31 inches (148.9 x 74.9 x 7.9 mm)
6.57 x 3.07 x 0.33 inches (166.9 x 77.9 x 8.4 mm)

Weight:

5.33 oz (151.0 g)
4.90 oz (139.0 g)
7.17 oz (203.4 g)

Resistance:

Yes; MIL-STD-810 certified

Biometrics:

Fingerprint (touch)
Fingerprint (touch)

Features:

Notification light

Keys:

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

Colors:

Black, Gold, White
Titan gray

Cellular

LTE (FDD):

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), 28(700 APT)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a)
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)

LTE (TDD):

Bands 38(2600)
Bands 41(2600+)

UMTS:

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

Data Speed:

LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE, HSPA
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
Nano SIM

HD Voice:

Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Album art cover, Background playback
Album art cover, Background playback
DTS:X Virtual Surround

Screen mirroring:

DLNA, Wireless screen share
DLNA, Wireless screen share
Wireless screen share

Radio:

FM
FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

4.2
4.1
5.0

Wi-Fi:

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

USB:

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

Features:

Mass storage device, Charging
Mass storage device, OTG, Charging
Charging

Location:

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

Sensors:

Accelerometer, Gyroscope, Compass, Step counter
Accelerometer, Compass
Accelerometer, Gyroscope, Compass

Other:

NFC, Tethering, Computer sync, OTA sync
Tethering, Computer sync, OTA sync

Hearing aid compatible:

M3, T3

Phone features

Notifications:

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone

Other features:

Voice dialing, Voice commands, Voice recording

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

EU SAR:

Head:

0.44 W/kg

Buyers information

Price:

$ 200

User Manual:

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

In The Box:

Charger, USB Cable, SIM Ejector

Availability

Officially announced:

Jun 16, 2016
May 06, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless