Display
Size:
6.5 inches
6.6 inches
Resolution:
1560 x 720 pixels, 19.5:9 ratio, 264 PPI
1600 x 720 pixels, 20:9 ratio, 266 PPI
Technology:
IPS LCD
Super AMOLED
Refresh rate:
60Hz
Screen-to-body:
79.70 %
84.26 %
Features:
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
MediaTek Helio P22 MT6762 (12 nm)
Qualcomm Snapdragon 750G SM7225 (8 nm)
Processor:
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit
Octa-core, 2x 2.2GHz Kryo 570 + 6x 1.8GHz Kryo 570, 64-bit
GPU:
IMG PowerVR GE8320
Adreno 619
RAM:
3GB
4GB LPDDR4
Internal storage:
32GB, available to use: 18 GB
128GB, available to use: 106 GB
Storage expansion:
microSDXC up to 2000 GB
microSDXC up to 1000 GB
Device type:
Smartphone
Smartphone
OS:
Android (10)
Android (12, 11, 10), Samsung One UI
Battery
Capacity:
4000 mAh
5000 mAh
Type:
Li - Ion, Not user replaceable
Not user replaceable
Charging:
Samsung Adaptive Fast Charging
Max charge speed:
Wired: 15.0W
Camera
Rear:
Triple camera
Quad camera
Main camera:
13 MP (PDAF)
48 MP (PDAF)
Specifications:
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F1.8; Pixel size: 0.8 μm
Second camera:
5 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications:
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2
Third camera:
2 MP (Depth information)
5 MP (Macro)
Specifications:
Sensor size: 1/5"; Pixel size: 1.75 μm
Aperture size: F2.4
Fourth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.4
Flash:
LED
LED
Video recording:
1920x1080 (Full HD)
3840x2160 (4K UHD) (30 fps), 1280x720 (HD) (480 fps)
Features:
Picture-taking during video recording
Front:
13 MP
20 MP (Autofocus)
Video capture:
1920x1080 (Full HD)
Design
Dimensions:
6.57 x 3.07 x 0.33 inches (166.9 x 77.9 x 8.4 mm)
6.47 x 2.99 x 0.34 inches (164.4 x 75.9 x 8.6 mm)
Weight:
7.17 oz (203.4 g)
6.81 oz (193.0 g)
Resistance:
Yes; MIL-STD-810 certified
Biometrics:
Fingerprint (touch)
In-screen fingerprint
Keys:
Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Titan gray
Prism Dot black, Prism Dot white, Prism Dot grey
Cellular
5G:
n1, n3, n5, n7, n8, n28, Sub-6
4G (FDD):
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), 17(700 b), 20(800 DD), 28(700 APT)
4G (TDD):
Bands 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
3G:
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 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
Dual SIM:
Shared with microSD
SIM type:
Nano SIM
Nano SIM
HD Voice:
Yes
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Features:
DTS:X Virtual Surround
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
Connectivity & Features
Bluetooth:
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
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features:
Charging
Charging
Location:
GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass
Other:
NFC
Hearing aid compatible:
M3, T3
Regulatory Approval
FCC approval:
Date approved:
Jun 16, 2020
Apr 08, 2021
FCC ID value:
ZNFL555DL
A3LSMA426U
Measured SAR:
Head:
0.66 W/kg
1.11 W/kg
Body:
1.20 W/kg
1.25 W/kg
Simultaneous Transmission:
1.59 W/kg
1.59 W/kg
Wireless Router:
1.27 W/kg
1.06 W/kg
Phablet:
3.96 W/kg
3.81 W/kg
Buyers information
Price:
$ 200
€ 340
User Manual:
This is the official LG K51 User Guide in English provided from the manufacturer.
This is the official Samsung Galaxy A42 User Guide in English provided from the manufacturer.
In The Box:
Charger, USB Cable, SIM Ejector
Availability
Officially announced:
May 06, 2020
Sep 02, 2020