LG Q70 vs LG K51 vs Samsung Galaxy A21

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

Comparison mode:

Display

Size:

6.4 inches
6.5 inches
6.5 inches

Resolution:

2310 x 1080 pixels, 19.25:9 ratio, 398 PPI
1560 x 720 pixels, 19.5:9 ratio, 264 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

IPS LCD
IPS LCD
IPS LCD

Screen-to-body:

81.56 %
79.70 %
79.20 %

Features:

Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 675 SM6150
MediaTek Helio P22 MT6762
Mediatek Helio P35

Processor:

Octa-core, 2000 MHz, Kryo 460, 64-bit, 11 nm
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU:

Adreno 612
IMG PowerVR GE8320
PowerVR GE8320

RAM:

4GB LPDDR4
3GB
3GB LPDDR4

Internal storage:

64GB (eMMC 5.1), available to use: 42.95 GB
32GB, available to use: 18 GB
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion:

microSDXC up to 2000 GB
microSDXC up to 2000 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10)
Android (10)
Android (10), Samsung One UI

Battery

Capacity:

4000 mAh
4000 mAh
4000 mAh

Type:

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

Charging:

Qualcomm Quick Charge 3.0, USB Power Delivery
Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Dual camera
Triple camera
Quad camera

Main camera:

32 MP (PDAF)
13 MP (PDAF)
16 MP (PDAF)

Specifications:

Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2.8"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm

Second camera:

5 MP (Depth information)
5 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.4
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

2 MP (Depth information)
2 MP (Macro)

Specifications:

Sensor size: 1/5"; Pixel size: 1.75 μm
Aperture size: F2.4

Fourth camera:

2 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

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

Features:

Time-lapse video, Picture-taking during video recording
Picture-taking during video recording

Front:

16 MP (HDR)
13 MP
13 MP

Video capture:

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

Design

Dimensions:

6.38 x 3.02 x 0.32 inches (162.1 x 76.7 x 8.1 mm)
6.57 x 3.07 x 0.33 inches (166.9 x 77.9 x 8.4 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight:

6.98 oz (198.0 g)
7.17 oz (203.4 g)
6.81 oz (193.0 g)

Materials:

Back: Glass; Frame: Metal
Back: Plastic; Frame: Plastic

Resistance:

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

Biometrics:

Fingerprint (touch)
Fingerprint (touch)
Fingerprint (touch)

Keys:

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

Colors:

Mirror black
Titan gray
Black

Cellular

LTE (FDD):

Bands 2(1900), 4(AWS-1), 5(850), 13(700 c), 66(AWS-3)
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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)

LTE (TDD):

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

UMTS:

Bands 5(850), 8(900), 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 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
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
Yes
Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features:

32-Bit DAC
DTS:X Virtual Surround

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.0

Wi-Fi:

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

USB:

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

Features:

Charging
Charging
Charging

Location:

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

Sensors:

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass

Other:

NFC, UMA (Wi-Fi Calling)
NFC

Hearing aid compatible:

M4, T3
M3, T3
M4, T3

Regulatory Approval

FCC approval:

Date approved:

May 02, 2020
Jun 16, 2020
Apr 17, 2020

FCC ID value:

ZNFQ620WA
ZNFL555DL
ZCASMA215U

Measured SAR:

Head:

0.19 W/kg
0.66 W/kg
0.42 W/kg

Body:

0.82 W/kg
1.20 W/kg
1.27 W/kg

Simultaneous Transmission:

1.58 W/kg
1.59 W/kg
1.27 W/kg

Wireless Router:

1.17 W/kg
1.27 W/kg
1.27 W/kg

Phablet:

3.96 W/kg
3.96 W/kg

Buyers information

Price:

$ 350
$ 200
$ 250

User Manual:

This is the official LG Q70 User Guide in English provided from the manufacturer.
This is the official LG K51 User Guide in English provided from the manufacturer.

In The Box:

Pre-installed Nano SIM Card, Travel Adapter & USB Cable, Quick Reference Guide, Product Safety and Warranty Brochure, SIM Eject Pin
Charger, USB Cable, SIM Ejector
This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

May 07, 2020
May 06, 2020
Apr 08, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless