Screen size
K31Winner: 5.7"+3.5%
Q75.5"
Quick verdict
Q7 leads the measured specs 9-3.
Measured wins
K31
3
spec wins
Ties
7
equal specs
Q7
9
spec wins
Overall winner
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Q7
GSM / HSPA / LTE
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Q7
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Q7
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
equal specsMain camera
equal specsFront 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
Q7
1, 3, 5, 7, 8, 28, 38, 40, 41
Speed
K31
HSPA, LTE
Q7
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Q7
2018, May. Released 2018, June
Status
K31
Discontinued
Q7
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Q7
143.8 x 69.3 x 8.4 mm (5.66 x 2.73 x 0.33 in)
Weight
K31
146 g (5.15 oz)
Q7
145 g (5.11 oz)
SIM
K31
Nano-SIM + Nano-SIM
Q7
· Nano-SIM· Nano-SIM + Nano-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Q7
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
Q7
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Q7
5.5 inches, 77.0 cm2 (~77.3% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Q7
1080 x 2160 pixels, 18:9 ratio (~442 ppi density)
OS
K31
Android 10, LG UX 9.1
Q7
Android 8.1 (Oreo), upgradable to Android 9.0 (Pie)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Q7
Mediatek MT6750S (28 nm) - Q7, Q7αQualcomm SDM450 Snapdragon 450 (14 nm) - Q7+
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Q7
Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) - Q7, Q7αOcta-core 1.8 GHz Cortex-A53 - Q7+
GPU
K31
PowerVR GE8320
Q7
Mali-T860MP2 - Q7, Q7αAdreno 506 - Q7+
Card slot
K31
microSDXC
Q7
microSDXC (dedicated slot)
Internal
K31
32GB 2GB RAM
Q7
32GB 3GB RAM, 64GB 4GB RAM
Other
K31
eMMC 5.1
Q7
eMMC 5.1
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
Q7
-
Features
K31
LED flash, panorama, HDR
Q7
LED flash, panorama, HDR
Video
K31
1080p@30fps
Q7
1080p@30fps (gyro-EIS)
Single
K31
-
Q7
13 MP, f/2.2, 1/3.1", 1.12µm, PDAF (Q7, Q7α) 16 MP, PDAF (Q7+)
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Q7
5 MP (Q7α) 8 MP, f/1.9, 1/4.0", 1.12µm (Q7, Q7+)
Video
K31
1080p@30fps
Q7
1080p@30fps
Loudspeaker
K31
Yes
Q7
Yes
3.5mm jack
K31
Yes
Q7
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Q7
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA
Bluetooth
K31
5.0, A2DP, LE
Q7
4.2, A2DP, LE
Positioning
K31
GPS
Q7
GPS, GLONASS
NFC
K31
No
Q7
Yes
Radio
K31
No
Q7
Stereo FM radio with RDS
USB
K31
microUSB 2.0
Q7
USB Type-C 2.0, OTG
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Q7
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Type
K31
Li-Ion 3000 mAh
Q7
Li-Po 3000 mAh, non-removable
Charging
K31
-
Q7
15W wired
Colors
K31
Gray
Q7
Aurora Black, Moroccan Blue, Lavender Violet
Models
K31
LM-K300Q, LMK300, LGL355DL
Q7
LM-Q610, LM-Q610.FG, LM-Q610.FGN, LM-Q610(FGN), LM-Q610.YN, LM-Q725L, LM-Q725K, LM-Q725S
Price
K31
About 130 EUR
Q7
About 150 EUR