Screen size
K31Winner: 5.7"+12%
K4 (2017)5.0"
Quick verdict
K31 leads the measured specs 9-2.
Measured wins
K31
9
spec wins
Overall winner
Ties
6
equal specs
K4 (2017)
2
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
K4 (2017)
GSM / HSPA / LTE
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
K4 (2017)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
K4 (2017)
HSDPA 850 / 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
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
K4 (2017)
1, 3, 5, 7, 8, 20
Speed
K31
HSPA, LTE
K4 (2017)
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
K4 (2017)
2016, December. Released 2017, March
Status
K31
Discontinued
K4 (2017)
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
K4 (2017)
144.7 x 72.6 x 7.9 mm (5.70 x 2.86 x 0.31 in)
Weight
K31
146 g (5.15 oz)
K4 (2017)
138 g (4.87 oz)
SIM
K31
Nano-SIM + Nano-SIM
K4 (2017)
· Nano-SIM· Nano-SIM + Nano-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
K4 (2017)
-
Type
K31
IPS LCD
K4 (2017)
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
K4 (2017)
5.0 inches, 69.6 cm2 (~66.3% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
K4 (2017)
480 x 854 pixels, 16:9 ratio (~195 ppi density)
Protection
K31
-
K4 (2017)
Corning Gorilla Glass 3
OS
K31
Android 10, LG UX 9.1
K4 (2017)
Android 6.0.1 (Marshmallow)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
K4 (2017)
Qualcomm MSM8909 Snapdragon 210 (28 nm)
CPU
K31
Octa-core 2.0 GHz Cortex-A53
K4 (2017)
Quad-core 1.1 GHz Cortex-A7
GPU
K31
PowerVR GE8320
K4 (2017)
Adreno 304
Card slot
K31
microSDXC
K4 (2017)
microSDHC (dedicated slot)
Internal
K31
32GB 2GB RAM
K4 (2017)
8GB/ 16GB (AT&T, Cricket), 1GB RAM
Other
K31
eMMC 5.1
K4 (2017)
eMMC 4.5
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
K4 (2017)
-
Features
K31
LED flash, panorama, HDR
K4 (2017)
LED flash, HDR
Video
K31
1080p@30fps
K4 (2017)
720p@30fps
Single
K31
-
K4 (2017)
5 MP, f/2.6, AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
K4 (2017)
5 MP, f/2.7
Video
K31
1080p@30fps
K4 (2017)
720p
Loudspeaker
K31
Yes
K4 (2017)
Yes
3.5mm jack
K31
Yes
K4 (2017)
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
K4 (2017)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
K31
5.0, A2DP, LE
K4 (2017)
4.1, A2DP, LE
Positioning
K31
GPS
K4 (2017)
GPS, GLONASS
NFC
K31
No
K4 (2017)
No
Radio
K31
No
K4 (2017)
FM radio, RDS
USB
K31
microUSB 2.0
K4 (2017)
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
K4 (2017)
Accelerometer, proximity
Type
K31
Li-Ion 3000 mAh
K4 (2017)
Li-Ion 2500 mAh, removable
Colors
K31
Gray
K4 (2017)
Black, Titan
Models
K31
LM-K300Q, LMK300, LGL355DL
K4 (2017)
M160, M153, M151
Price
K31
About 130 EUR
K4 (2017)
About 100 EUR