Screen size
G4 Dual5.5"
K31Winner: 5.7"+3.5%
Quick verdict
G4 Dual leads the measured specs 7-5.
Measured wins
G4 Dual
7
spec wins
Overall winner
Ties
6
equal specs
K31
5
spec wins
Screen size
Technology
G4 Dual
GSM / HSPA / LTE
K31
GSM / CDMA / HSPA / LTE
2G bands
G4 Dual
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
3G bands
G4 Dual
HSDPA 850 / 900 / 1900 / 2100 - H818N, TD-SCDMA - H818N
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
G4 Dual
1, 3, 7, 38, 39, 40, 41 - H818N
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Speed
G4 Dual
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
K31
HSPA, LTE
Announced
G4 Dual
2015, May. Released 2015, May
K31
2020, August 21. Released 2020, August 21
Status
G4 Dual
Discontinued
K31
Discontinued
Dimensions
G4 Dual
149 x 76.2 x 9.8 mm (5.87 x 3.00 x 0.39 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
G4 Dual
155 g (5.47 oz)
K31
146 g (5.15 oz)
SIM
G4 Dual
Dual SIM
K31
Nano-SIM + Nano-SIM
Other
G4 Dual
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
G4 Dual
IPS LCD
K31
IPS LCD
Size
G4 Dual
5.5 inches, 83.4 cm2 (~73.4% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
G4 Dual
1440 x 2560 pixels, 16:9 ratio (~534 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Protection
G4 Dual
Corning Gorilla Glass 3
K31
-
OS
G4 Dual
Android 5.1.1 (Lollipop), upgradable to 6.0 (Marshmallow), LG Optimus UX UI 4
K31
Android 10, LG UX 9.1
Chipset
G4 Dual
Qualcomm MSM8992 Snapdragon 808 (20 nm)
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
G4 Dual
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
K31
Octa-core 2.0 GHz Cortex-A53
GPU
G4 Dual
Adreno 418
K31
PowerVR GE8320
Card slot
G4 Dual
microSDXC (dedicated slot)
K31
microSDXC
Internal
G4 Dual
32GB 3GB RAM
K31
32GB 2GB RAM
Other
G4 Dual
eMMC 5.0
K31
eMMC 5.1
Single
G4 Dual
16 MP, f/1.8, 28mm (wide), 1/2.6", 1.12µm, 3-axis OIS
K31
-
Features
G4 Dual
Laser AF, color spectrum sensor, LED flash, panorama, HDR
K31
LED flash, panorama, HDR
Video
G4 Dual
4K@30fps, 1080p@60fps, HDR, stereo sound rec.
K31
1080p@30fps
Dual
G4 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
Single
G4 Dual
8 MP, f/2.0
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
G4 Dual
1080p@30fps
K31
1080p@30fps
Loudspeaker
G4 Dual
Yes
K31
Yes
3.5mm jack
G4 Dual
Yes
K31
Yes
WLAN
G4 Dual
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
G4 Dual
4.1, A2DP, LE, aptX
K31
5.0, A2DP, LE
Positioning
G4 Dual
GPS, GLONASS
K31
GPS
NFC
G4 Dual
Yes
K31
No
Infrared port
G4 Dual
Yes
K31
-
Radio
G4 Dual
Stereo FM radio, RDS
K31
No
USB
G4 Dual
microUSB 2.0 (SlimPort 4K), OTG
K31
microUSB 2.0
Sensors
G4 Dual
Accelerometer, gyro, proximity, compass, barometer
K31
Fingerprint (rear-mounted), accelerometer
Type
G4 Dual
Li-Ion 3000 mAh, removable
K31
Li-Ion 3000 mAh
Charging
G4 Dual
18W wired, QC2 Wireless (Qi) (optional)
K31
-
Stand-by
G4 Dual
Up to 240 h (2G) / Up to 240 h (3G)
K31
-
Talk time
G4 Dual
Up to 8 h (2G) / Up to 12 h (3G)
K31
-
Colors
G4 Dual
Grey, White, Gold, Leather Black, Leather Brown, Leather Red
K31
Gray
Models
G4 Dual
H818, H818N
K31
LM-K300Q, LMK300, LGL355DL
Price
G4 Dual
About 280 EUR
K31
About 130 EUR