Screen size
K31Winner: 5.7"+30%
Optimus Black (White version)4.0"
Quick verdict
K31 leads the measured specs 12-1.
Measured wins
K31
12
spec wins
Overall winner
Ties
4
equal specs
Optimus Black (White version)
1
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Optimus Black (White version)
GSM / HSPA
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Optimus Black (White version)
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Optimus Black (White version)
HSDPA 900 / 1900 / 2100
4G bands
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Optimus Black (White version)
-
Speed
K31
HSPA, LTE
Optimus Black (White version)
HSPA 7.2/5.76 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Optimus Black (White version)
2011, July. Released 2011, July
Status
K31
Discontinued
Optimus Black (White version)
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Optimus Black (White version)
122 x 64 x 9.2 mm (4.80 x 2.52 x 0.36 in)
Weight
K31
146 g (5.15 oz)
Optimus Black (White version)
109 g (3.84 oz)
SIM
K31
Nano-SIM + Nano-SIM
Optimus Black (White version)
Mini-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Optimus Black (White version)
-
Type
K31
IPS LCD
Optimus Black (White version)
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Optimus Black (White version)
4.0 inches, 45.5 cm2 (~58.3% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Optimus Black (White version)
480 x 800 pixels, 5:3 ratio (~233 ppi density)
Protection
K31
-
Optimus Black (White version)
Corning Gorilla Glass
Other
K31
-
Optimus Black (White version)
Optimus UI 2.0, Gesture UI 2.0
OS
K31
Android 10, LG UX 9.1
Optimus Black (White version)
Android 2.2 (Froyo), 2.3 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Optimus Black (White version)
TI OMAP 3630
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Optimus Black (White version)
1.0 GHz Cortex-A8
GPU
K31
PowerVR GE8320
Optimus Black (White version)
PowerVR SGX530
Card slot
K31
microSDXC
Optimus Black (White version)
microSDHC (dedicated slot)
Internal
K31
32GB 2GB RAM
Optimus Black (White version)
2GB 512MB RAM
Other
K31
eMMC 5.1
Optimus Black (White version)
-
Dual
K31
13 MP, f/1.8, 27mm (wide), 1/3.1", 1.12µm, PDAF 5 MP, f/2.2, 120˚ (ultrawide), 1/5.0", 1.12µm
Optimus Black (White version)
-
Features
K31
LED flash, panorama, HDR
Optimus Black (White version)
LED flash
Video
K31
1080p@30fps
Optimus Black (White version)
720p@30fps
Single
K31
-
Optimus Black (White version)
5 MP, AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Optimus Black (White version)
2 MP
Video
K31
1080p@30fps
Optimus Black (White version)
Loudspeaker
K31
Yes
Optimus Black (White version)
Yes
3.5mm jack
K31
Yes
Optimus Black (White version)
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Optimus Black (White version)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot
Bluetooth
K31
5.0, A2DP, LE
Optimus Black (White version)
2.1, A2DP, EDR
Positioning
K31
GPS
Optimus Black (White version)
GPS, A-GPS
NFC
K31
No
Optimus Black (White version)
-
Radio
K31
No
Optimus Black (White version)
Stereo FM radio, RDS
USB
K31
microUSB 2.0
Optimus Black (White version)
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Optimus Black (White version)
Accelerometer, proximity, compass
Other
K31
-
Optimus Black (White version)
MP4/DivX/Xvid/H.264/WMV player MP3/WAV/WMA/eAAC+ player Document viewer Organizer Voice memo/dial/commands Predictive text input
Type
K31
Li-Ion 3000 mAh
Optimus Black (White version)
Removable Li-Ion 1500 mAh battery
Colors
K31
Gray
Optimus Black (White version)
White
Models
K31
LM-K300Q, LMK300, LGL355DL
Optimus Black (White version)
-
Price
K31
About 130 EUR
Optimus Black (White version)
About 140 EUR
SAR EU
K31
-
Optimus Black (White version)
1.27 W/kg (head)