Screen size
K315.7"
Q9Winner: 6.1"+6.6%
Quick verdict
Q9 leads the measured specs 13-1.
Measured wins
K31
1
spec wins
Ties
5
equal specs
Q9
13
spec wins
Overall winner
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Q9
GSM / HSPA / LTE
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Q9
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Q9
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
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Q9
1, 3, 5, 7, 8, 28, 38
Speed
K31
HSPA, LTE
Q9
HSPA 42.2/5.76 Mbps, LTE (3CA) Cat11 600/50 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Q9
2019, January. Released 2019, July
Status
K31
Discontinued
Q9
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Q9
153.2 x 71.9 x 7.9 mm (6.03 x 2.83 x 0.31 in)
Weight
K31
146 g (5.15 oz)
Q9
159 g (5.61 oz)
SIM
K31
Nano-SIM + Nano-SIM
Q9
· Nano-SIM· Nano-SIM + Nano-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Q9
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
K31
IPS LCD
Q9
IPS LCD, HDR10
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Q9
6.1 inches, 91.0 cm2 (~82.6% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Q9
1440 x 3120 pixels, 19.5:9 ratio (~564 ppi density)
OS
K31
Android 10, LG UX 9.1
Q9
Android 8.1 (Oreo)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Q9
Qualcomm MSM8996 Snapdragon 821 (14 nm)
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Q9
Quad-core (2x2.15 GHz Kryo & 2x1.6 GHz Kryo)
GPU
K31
PowerVR GE8320
Q9
Adreno 530
Card slot
K31
microSDXC
Q9
microSDXC (dedicated slot)
Internal
K31
32GB 2GB RAM
Q9
64GB 4GB RAM
Other
K31
eMMC 5.1
Q9
UFS 2.0
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
Q9
-
Features
K31
LED flash, panorama, HDR
Q9
LED flash, HDR, panorama
Video
K31
1080p@30fps
Q9
4K@30fps
Single
K31
-
Q9
16 MP, f/2.2, 28mm (wide), PDAF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Q9
8 MP, f/1.9, 26mm (wide)
Video
K31
1080p@30fps
Q9
1080p@30fps
Features
K31
-
Q9
HDR
Loudspeaker
K31
Yes
Q9
Yes
3.5mm jack
K31
Yes
Q9
Yes
Other
K31
-
Q9
32-bit/192kHz Hi-Res audio
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Q9
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Bluetooth
K31
5.0, A2DP, LE
Q9
5.0, A2DP, LE
Positioning
K31
GPS
Q9
GPS, GLONASS, BDS
NFC
K31
No
Q9
Yes
Radio
K31
No
Q9
FM radio
USB
K31
microUSB 2.0
Q9
USB Type-C 3.1, OTG
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Q9
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Type
K31
Li-Ion 3000 mAh
Q9
Li-Ion 3000 mAh, non-removable
Charging
K31
-
Q9
18W wired, QC3
Colors
K31
Gray
Q9
Carmine Red, New Aurora Black, New Moroccan Blue
Models
K31
LM-K300Q, LMK300, LGL355DL
Q9
LM-Q925S, LM-Q925L, LM-Q925K
Price
K31
About 130 EUR
Q9
About 400 EUR