Display
Size:
5.7 inches
6.5 inches
Resolution:
1520 x 720 pixels, 19:9 ratio, 295 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
Technology:
IPS LCD
LCD
Screen-to-body:
77.13 %
85.80 %
Features:
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
MediaTek Helio P22 MT6762 (12 nm)
Mediatek Helio P35 MT6765 (12 nm)
Processor:
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit
GPU:
IMG PowerVR GE8320
PowerVR GE8320
RAM:
2GB
4GB LPDDR4
Internal storage:
32GB, available to use: 17 GB
64GB (eMMC 5.1), available to use: 48.2 GB
Storage expansion:
microSDXC up to 32 GB
microSDXC up to 1024 GB
Device type:
Smartphone
Smartphone
OS:
Android (10)
Android (10), Samsung One UI UI
Battery
Capacity:
3000 mAh
5000 mAh
Type:
Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Samsung Adaptive Fast Charging
Max charge speed:
Wired: 15.0W
Camera
Rear:
Dual camera
Quad camera
Main camera:
13 MP (PDAF)
48 MP (Autofocus)
Specifications:
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm
Second camera:
5 MP (Ultra-wide)
5 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 (Macro)
Specifications:
Aperture size: F2.4
Fourth camera:
2 MP (Depth information)
Specifications:
Aperture size: F2.4
Flash:
LED
LED
Video recording:
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Front:
5 MP
8 MP
Video capture:
1920x1080 (Full HD)
Design
Dimensions:
5.82 x 2.8 x 0.34 inches (147.8 x 71.1 x 8.6 mm)
6.46 x 2.98 x 0.35 inches (164 x 75.8 x 8.9 mm)
Weight:
5.15 oz (146.0 g)
7.23 oz (205.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Resistance:
Yes; MIL-STD-810 certified
Biometrics:
Fingerprint (touch)
Fingerprint (touch)
Keys:
Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Silver
Black, White, Blue, Red
Cellular
4G (FDD):
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 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), 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, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
HD Voice:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Screen mirroring:
Wireless screen share
Wireless screen share, MirrorLink
Radio:
FM
Additional microphone(s):
for Noise cancellation
Connectivity & Features
Bluetooth:
5.0
5.0
Wi-Fi:
802.11 b, g, n; Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot
USB:
microUSB, USB 2.0
Type-C (reversible), USB 2.0
Features:
Charging
Charging, Mass storage device
Location:
GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer
Accelerometer
Other:
UMA (Wi-Fi Calling)
NFC
Hearing aid compatible:
M3, T3
Regulatory Approval
FCC approval:
Date approved:
Sep 14, 2020
Mar 11, 2021
FCC ID value:
ZNFK300AM
A3LSMA125U
Measured SAR:
Head:
0.47 W/kg
1.14 W/kg
Body:
0.91 W/kg
1.20 W/kg
Simultaneous Transmission:
1.26 W/kg
1.59 W/kg
Wireless Router:
1.02 W/kg
1.34 W/kg
Buyers information
Price:
$ 150
€ 179
User Manual:
This is the official LG K31 User Guide in English provided from the manufacturer.
This is the official Samsung Galaxy A12 User Guide in English provided from the manufacturer.
In The Box:
Travel Adapter, USB Cable
Power brick, USB cable, Headphones, Sim card extraction tool
Availability
Officially announced:
Nov 24, 2020