LG K8x vs Samsung Galaxy S21 Ultra vs Apple iPhone 12 Pro Max

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

Display

Size:

5.7 inches
6.8 inches
6.7 inches

Resolution:

1520 x 720 pixels, 19:9 ratio, 295 PPI
3200 x 1440 pixels, 20:9 ratio, 516 PPI
2778 x 1284 pixels, 19.5:9 ratio, 458 PPI

Technology:

IPS LCD
Dynamic AMOLED
OLED

Screen-to-body:

77.13 %
89.33 %
87.45 %

Peak brightness:

1500 cd/m2 (nit)
1200 cd/m2 (nit)

Features:

Ambient light sensor, Proximity sensor
120Hz refresh rate (adaptable), HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
60Hz refresh rate, HDR support, Oleophobic coating, Scratch-resistant glass (Ceramic Shield), Ambient light sensor, Proximity sensor

Hardware

System chip:

MediaTek Helio P22 MT6762
Qualcomm Snapdragon 888
Apple A14 Bionic

Processor:

Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm
Hexa-core, 3100 MHz, 64-bit, 5 nm

GPU:

IMG PowerVR GE8320
Adreno 660
Yes

RAM:

2GB
12GB LPDDR5
6GB LPDDR5

Internal storage:

32GB
128GB (UFS 3.1), not expandable
128GB (NVMe), not expandable

Storage expansion:

microSDXC

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10)
Android (11), Samsung One UI
iOS (14.x)

Battery

Capacity:

3000 mAh
5000 mAh
3687 mAh

Type:

Not user replaceable
Li - Polymer, Not user replaceable
Li - Ion, Not user replaceable

Charging:

Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
USB Power Delivery, Qi wireless charging, MagSafe wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W
Wireless: 15.0W

Camera

Rear:

Dual camera
Quad camera
Triple camera

Main camera:

13 MP (PDAF)
108 MP (OIS, Laser and PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F1.8; Focal length: 24 mm; Sensor size: 1/1.33"; Pixel size: 0.8 μm
Aperture size: F1.6; Focal length: 26 mm; Pixel size: 1.7 μm

Second camera:

5 MP (Ultra-wide)
10 MP (Telephoto, OIS, PDAF)
12 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Optical zoom: 3.0x; Aperture size: F2.4; Focal Length: 70 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm
Optical zoom: 2.5x; Aperture size: F2.2; Focal Length: 65 mm

Third camera:

12 MP (Ultra-wide, PDAF)
12 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F2.4; Focal Length: 13 mm

Fourth camera:

10 MP (Periscope, OIS, PDAF)

Specifications:

Optical zoom: 10.0x; Aperture size: F4.9; Focal Length: 240 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm

Video recording:

1920x1080 (Full HD) (30 fps)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (30 fps)

Features:

OIS, HDR, Hyperlapse, Video light, EIS
OIS, HDR, Time-lapse video, Continuous autofocus, Picture-taking during video recording, Video light

Front:

5 MP
40 MP (PDAF, HDR)
12 MP (Time-of-Flight (ToF), EIS, HDR, Slow-motion videos)

Video capture:

1920x1080 (Full HD)
3840x2160 (4K UHD) (60 fps)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

5.82 x 2.8 x 0.34 inches (147.8 x 71.1 x 8.6 mm)
6.50 x 2.98 x 0.35 inches (165.1 x 75.6 x 8.9 mm)
6.33 x 3.07 x 0.29 inches (160.84 x 78.09 x 7.39 mm)

Weight:

5.15 oz (146.0 g)
8.04 oz (229.0 g)
8.03 oz (228.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Glass (Corning Gorilla Glass Victus); Frame: Aluminum
Back: Glass; Frame: Stainless steel

Materials & Colors:

Pacific blue, Gold, Silver, Graphite

Resistance:

Water, Dust; IP68
Water, Splash, Dust; IP68

Biometrics:

Fingerprint (touch)
2D Face unlock, Ultrasonic in-screen fingerprint
3D Face unlock

Keys:

Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key

Colors:

Silver
Phantom black, Silver

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79, n260, n261, Sub-6, mmWave

LTE (FDD):

Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 66(AWS-3)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600)

LTE (TDD):

Bands 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500), 46, 48(3600)

UMTS:

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

Data Speed:

LTE-A Cat 7 (300/100 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, UMTS
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM, eSIM

HD Voice:

Yes
Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features:

32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation, Video recording
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.1
5.0

Wi-Fi:

802.11 b, g, n; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

microUSB, USB 2.0
Type-C (reversible), USB 3.2
Lightning

Features:

Charging
Charging, Headphones port, OTG, Video out
Charging, Headphones port

Location:

GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Barometer, LiDAR scanner

Other:

NFC, ANT+
NFC, UMA (Wi-Fi Calling)

Hearing aid compatible:

M3, T3
M3, T3
M3, T4

Regulatory Approval

FCC approval:

Date approved:

Apr 01, 2020
Dec 22, 2020

FCC ID value:

ZNFK300UM link
A3LSMG998U link

Measured SAR:

Head:

0.52 W/kg
0.77 W/kg

Body:

0.91 W/kg
1.02 W/kg

Simultaneous Transmission:

1.24 W/kg
1.59 W/kg

Wireless Router:

0.94 W/kg
1.16 W/kg

Phablet:

3.15 W/kg

Buyers information

Price:

$ 40
$ 1200
$ 1100

User Manual:

This is the official LG K8x User Guide in English provided from the manufacturer.

In The Box:

Handset, Travel Adapter, USB Data Cable, SIM card, Quick Reference Guide
C to C Data Cable, Ejection Pin
USB‑C to Lightning Cable, Documentation

Availability

Officially announced:

Jan 14, 2021
Oct 13, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless