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LG G8 ThinQ vs Alcatel 3X (2019) vs Samsung Galaxy S21

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

Comparison mode:

Display

Size:

6.1 inches
6.5 inches
6.2 inches

Resolution:

3120 x 1440 pixels, 19.5:9 ratio, 563 PPI
1600 x 720 pixels, 20:9 ratio, 269 PPI
2400 x 1080 pixels, 20:9 ratio, 424 PPI

Technology:

OLED
Dynamic AMOLED

Refresh rate:

120Hz (adaptive)

Screen-to-body:

83.66 %
82.25 %
86.06 %

Peak brightness:

600 cd/m2 (nit)
1300 cd/m2 (nit)

Features:

HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 855
MediaTek MT6763V/V
Qualcomm Snapdragon 888

Processor:

Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm
Octa-core, 2000 MHz, 64-bit
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm

GPU:

Adreno 640
ARM Mali G71 MP2
Adreno 660

RAM:

6GB LPDDR4
4GB
8GB LPDDR5

Internal storage:

128GB, available to use: 106 GB
64GB, available to use: 55 GB
128GB (UFS 3.0), not expandable

Storage expansion:

microSDXC up to 2000 GB
microSDXC up to 128 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (9.0 Pie)
Android (9.0 Pie)
Android (11), Samsung One UI

Battery

Capacity:

3500 mAh
4000 mAh
4000 mAh

Type:

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

Charging:

Qualcomm Quick Charge 3.0, USB Power Delivery, Qi wireless charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Dual camera
Triple camera
Triple camera

Main camera:

12 MP (OIS, PDAF)
16 MP (PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.5; Focal length: 27 mm; Sensor size: 1/2.6"; Pixel size: 1.4 μm
Aperture size: F1.8; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; Pixel size: 1.8 μm

Second camera:

16 MP (Ultra-wide)
8 MP (Ultra-wide)
64 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F1.9; Focal Length: 16 mm; Sensor size: 1/3.1"; Pixel size: 1 μm
Aperture size: F2.2; Focal Length: 17 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

5 MP (Depth information)
12 MP (Ultra-wide, Autofocus)

Specifications:

Aperture size: F2.4; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Video recording:

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

Features:

HDR, Time-lapse video, EIS, Video calling, Video sharing
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

Front:

8 MP (Dual-Camera, Autofocus)
8 MP
10 MP (PDAF, HDR)

Video capture:

1920x1080 (Full HD)
1280x720 (HD) (30 fps)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

5.98 x 2.83 x 0.33 inches (151.9 x 71.8 x 8.4 mm)
6.49 x 2.98 x 0.33 inches (164.8 x 75.8 x 8.39 mm)
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

Weight:

5.89 oz (167.0 g)
6.28 oz (178.0 g)
6.03 oz (171.0 g)

Materials:

Back: Glass (Corning Gorilla Glass 6); Frame: Aluminum
Back: Plastic; Frame: Aluminum

Resistance:

Water, Dust; IP68; MIL-STD-810 certified
Water, Dust; IP68

Biometrics:

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

Keys:

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

Colors:

Aurora black, Platinum gray, Carmine red
Jewelry Black
Phantom pink, Violet, Gray, White

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
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)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
Bands 38(2600), 40(2300)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

UMTS:

Bands 5(850), 8(900), 4(1700/2100), 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 Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 11 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

HD Voice:

Yes
Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Multiple speakers
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

32-Bit DAC, DTS:X Virtual Surround, aptX-HD
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Screen mirroring:

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

Radio:

FM
FM
FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation, Video recording
for Noise cancellation
for Noise cancellation, Video recording

Connectivity & Features

Bluetooth:

5.0
4.2
5.0

Wi-Fi:

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

USB:

Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.2

Features:

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

Location:

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

Sensors:

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

Other:

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

Hearing aid compatible:

M4, T3
M3
M3, T3

Regulatory Approval

FCC approval:

Date approved:

Feb 15, 2019
Dec 08, 2020

FCC ID value:

ZNFG820UM
A3LSMG991U

Measured SAR:

Head:

0.98 W/kg
0.36 W/kg

Body:

0.95 W/kg
1.08 W/kg

Simultaneous Transmission:

1.59 W/kg
3.96 W/kg

Wireless Router:

1.29 W/kg
1.09 W/kg

Phablet:

3.88 W/kg
2.49 W/kg

Buyers information

Price:

$ 820
$ 800

In The Box:

USB Type-C cable, Quick Charge 3.0 charger, SIM tray opener, Clear case, Stereo headset
C to C Data Cable, Ejection Pin

Availability

Officially announced:

Feb 24, 2019
Sep 05, 2019
Jan 14, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless