LG K40 vs Xiaomi Poco X4 GT Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

LG K40 Xiaomi Poco X4 GT
Released · March 2019
Released · Jun 27, 2022
5.7-inch · 1440 x 720 px
6.6-inch · 2460 x 1080 px
8 MP Main · 5 MP Selfie
64 MP Main · 16 MP Selfie
2GB · 16GB
8GB · 128GB
3000 mAh
5080 mAh
Check prices Check prices

Display

Size
5.7-inch 6.6-inch
Resolution
1440 x 720 px, 18:9 ratio, 282 PPI 2460 x 1080 px, 20.5:9 ratio, 407 PPI
Technology
IPS LCD IPS LCD
Refresh rate
144Hz
Screen-to-body
76.28 % 84.97 %
Features
Scratch-resistant glass (Tempered Glass), Ambient light sensor, Proximity sensor Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 450 SDM450 (14 nm) MediaTek Dimensity 8100 SM8250- (5 nm)
Processor
Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit Octa-core, 4x 2.85GHz Cortex-A78 + 4x 2.0GHz Cortex-A55
GPU
Adreno 506 Mali-G610 MC6
RAM
2GB (LPDDR3) 8GB
Internal storage
16GB, available to use: 8 GB 128GB (UFS 3.1), not expandable
Storage expansion
microSDXC up to 2000 GB
OS
Android (8.1 Oreo) Android (12), Xiaomi MI UI
Device type
Smartphone Smartphone

Battery

Capacity
3000 mAh 5080 mAh
Type
Li - Polymer, Not user replaceable Not user replaceable
Charging
Qualcomm Quick Charge, USB Power Delivery
Max charge speed
Wired: 67.0W

Camera

Rear
Single camera Triple camera
Main camera
8 MP (PDAF)
Specifications:
Aperture size: F2.0
Sensor size: 1/3"
Pixel size: 1 μm
64 MP (PDAF)
Specifications:
Aperture size: F1.9
Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Sensor size: 1/4"
Pixel size: 1.12 μm
Third camera
2 MP (Macro, Autofocus)
Specifications:
Aperture size: F2.4
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps)
Features:
Video calling, Video sharing
3840x2160 (4K UHD), 1920x1080 (Full HD), 1280x720 (HD)
Features:
Time-lapse video, EIS
Front
5 MP (Flash) 16 MP (HDR, Slow-motion videos), Video capture: 1920x1080 (Full HD)

Design

Dimensions
6.02 x 2.83 x 0.33 inches
(153.0 x 71.9 x 8.3 mm)
6.44 x 2.93 x 0.35 inches
(163.6 x 74.3 x 8.9 mm)
Weight
5.11 oz(145.0 g) 7.05 oz(200.0 g)
Materials
Back: Plastic Frame: Plastic
Resistance
Shock; MIL-STD-810 certified
Biometrics
Fingerprint (touch) 2D Face unlock, Fingerprint (touch)
Keys
Left: Volume control; Right: Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Black, Gray, Blue Blue. Black, Silver

Cellular

5G
Bands n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78, SA, NSA
4G (FDD)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 66(AWS-3) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD)
Bands 38(2600), 40(2300), 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-A Cat 6 (300/50 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
SIM type
Nano SIM Dual Nano SIM
HD Voice
Yes

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Multiple speakers
Features
Album art cover, Background playback Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation Noise cancellation, Video recording

Connectivity & Features

Bluetooth
5.0 5.3
Wi-Fi
802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band
Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0, Features: Charging, OTG, Mass storage device Type-C (reversible), USB 2.0, Features: Charging, Headphones port, OTG
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, BeiDou, Dual-band positioning, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Compass Accelerometer, Gyroscope, Compass
Other
NFC, VoIP, Tethering, Computer sync, OTA sync NFC

Buyers information

MSRP
$ 180

Availability

Officially announced
Feb 20, 2019 Jun 23, 2022

Alternative variants

International version
System chip MediaTek Helio P22 MT6762 (12 nm)
Processor Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit
GPU IMG PowerVR GE8320
Internal storage 32GB, available to use: 20.2 GB
Main camera 16 MP
Front 8 MP
4G (FDD) Bands 1(2100), 3(1800), 7(2600), 8(900), 20(800 DD)
4G (TDD) Bands 38(2600)
Dual SIM Yes
With 256GB internal storage
Internal storage 256GB
for Metro by T-Mobile
Internal storage 32GB, available to use: 17.9 GB
OS Android (9.0 Pie)
Main camera 13 MP
Front 5 MP
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 7(2600), 12(700 a), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD) Bands 41(2600+)
FCC approval Date approved: May 28, 2019
FCC ID value: ZNFX420MM
Measured SAR Head: 0.51 W/kg
Body: 0.98 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 0.98 W/kg
Phablet: 3.99 W/kg
FCC OKs Cingular\'s purchase of AT&T Wireless