Screen size
K31Winner: 5.7"+12%
Zero5.0"
Quick verdict
K31 leads the measured specs 9-2.
Measured wins
K31
9
spec wins
Overall winner
Ties
6
equal specs
Zero
2
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Zero
GSM / HSPA / LTE
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Zero
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Zero
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
equal specsFront camera
Battery
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
Zero
1, 3, 7, 8, 20 - H650E
Speed
K31
HSPA, LTE
Zero
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Zero
2015, September. Released 2015, October
Status
K31
Discontinued
Zero
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Zero
142 x 71.8 x 7.4 mm (5.59 x 2.83 x 0.29 in)
Weight
K31
146 g (5.15 oz)
Zero
150 g (5.29 oz)
SIM
K31
Nano-SIM + Nano-SIM
Zero
Nano-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Zero
-
Type
K31
IPS LCD
Zero
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Zero
5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Zero
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Protection
K31
-
Zero
Corning Gorilla Glass 3
OS
K31
Android 10, LG UX 9.1
Zero
Android 5.1.1 (Lollipop), upgradаble to 6.0 (Marshmallow)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Zero
Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Zero
Quad-core 1.2 GHz Cortex-A53
GPU
K31
PowerVR GE8320
Zero
Adreno 306
Card slot
K31
microSDXC
Zero
microSDXC (dedicated slot) - F620SmicroSDHC (dedicated slot) - H650E
Internal
K31
32GB 2GB RAM
Zero
16GB 1.5GB RAM (H650E), 16GB 2GB RAM (F620S)
Other
K31
eMMC 5.1
Zero
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
Zero
-
Features
K31
LED flash, panorama, HDR
Zero
LED flash, HDR, panorama
Video
K31
1080p@30fps
Zero
1080p@30fps
Single
K31
-
Zero
13 MP, 1/3.0", AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Zero
8 MP
Video
K31
1080p@30fps
Zero
1080p@30fps
Loudspeaker
K31
Yes
Zero
Yes
3.5mm jack
K31
Yes
Zero
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Zero
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, DLNA, hotspot
Bluetooth
K31
5.0, A2DP, LE
Zero
4.1, A2DP
Positioning
K31
GPS
Zero
GPS, GLONASS
NFC
K31
No
Zero
No
Radio
K31
No
Zero
FM radio, RDS
USB
K31
microUSB 2.0
Zero
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Zero
Accelerometer, proximity, compass
Type
K31
Li-Ion 3000 mAh
Zero
Li-Ion 2050 mAh, non-removable
Stand-by
K31
-
Zero
Up to 340 h (2G) / Up to 340 h (3G)
Talk time
K31
-
Zero
Up to 6 h (2G) / Up to 10 h (3G)
Colors
K31
Gray
Zero
Gold, Silver, Blue, Black
Models
K31
LM-K300Q, LMK300, LGL355DL
Zero
H650, F620, F620L, F620K
Price
K31
About 130 EUR
Zero
About 190 EUR