Screen size
K315.7"
Q51Winner: 6.5"+12%
Quick verdict
Q51 leads the measured specs 7-2.
Measured wins
K31
2
spec wins
Ties
9
equal specs
Q51
7
spec wins
Overall winner
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Q51
GSM / HSPA / LTE
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Q51
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Q51
HSDPA 850 / 900 / 1900 / 2100
4G bands
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Q51
1, 3, 7, 8, 20
Speed
K31
HSPA, LTE
Q51
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/75 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Q51
2020, February 25. Released 2020, February 26
Status
K31
Discontinued
Q51
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Q51
164.5 x 77.5 x 8.4 mm (6.48 x 3.05 x 0.33 in)
Weight
K31
146 g (5.15 oz)
Q51
-
SIM
K31
Nano-SIM + Nano-SIM
Q51
Nano-SIM + Nano-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Q51
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
K31
IPS LCD
Q51
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Q51
6.5 inches, 105.5 cm2 (~82.7% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Q51
720 x 1520 pixels, 19:9 ratio (~259 ppi density)
OS
K31
Android 10, LG UX 9.1
Q51
Android 10
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Q51
Mediatek MT6762 Helio P22 (12 nm)
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Q51
Octa-core 2.0 GHz Cortex-A53
GPU
K31
PowerVR GE8320
Q51
PowerVR GE8320
Card slot
K31
microSDXC
Q51
microSDXC (dedicated slot)
Internal
K31
32GB 2GB RAM
Q51
32GB 3GB RAM
Other
K31
eMMC 5.1
Q51
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
Q51
-
Features
K31
LED flash, panorama, HDR
Q51
LED flash, panorama, HDR
Video
K31
1080p@30fps
Q51
1080p@30fps
Triple
K31
-
Q51
13 MP, (wide), PDAF 5 MP, 13mm (ultrawide) Auxiliary lens
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Q51
13 MP, (wide), 1/3.1", 1.12µm
Video
K31
1080p@30fps
Q51
1080p@30fps
Loudspeaker
K31
Yes
Q51
Yes, with stereo speakers
3.5mm jack
K31
Yes
Q51
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Q51
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Bluetooth
K31
5.0, A2DP, LE
Q51
5.0, A2DP, LE
Positioning
K31
GPS
Q51
GPS
NFC
K31
No
Q51
Yes
Radio
K31
No
Q51
No
USB
K31
microUSB 2.0
Q51
USB Type-C 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Q51
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
K31
Li-Ion 3000 mAh
Q51
Li-Po 4000 mAh
Colors
K31
Gray
Q51
Frozen White, Moonlight Titanium
Models
K31
LM-K300Q, LMK300, LGL355DL
Q51
LM-Q510N
Price
K31
About 130 EUR
Q51
About 240 EUR