Screen size
equal specsK405.7"
Q315.7"
Quick verdict
K40 leads the measured specs 5-3.
Measured wins
K40
5
spec wins
Overall winner
Ties
9
equal specs
Q31
3
spec wins
Screen size
equal specsTechnology
K40
GSM / HSPA / LTE
Q31
GSM / HSPA / LTE
2G bands
K40
GSM 850 / 900 / 1800 / 1900
Q31
GSM 850 / 900 / 1800 / 1900
3G bands
K40
HSDPA 850 / 900 / 1900 / 2100
Q31
HSDPA 850 / 900 / 1900 / 2100
4G bands
K40
1, 3, 7, 8, 20
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Q31
LTE
Speed
K40
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Q31
HSPA, LTE
Announced
K40
2019, February. Released 2019, April
Q31
2020, September 17. Released 2020, September 25
Status
K40
Discontinued
Q31
Discontinued
Dimensions
K40
153 x 71.9 x 8.3 mm (6.02 x 2.83 x 0.33 in)
Q31
147.9 x 71 x 8.7 mm (5.82 x 2.80 x 0.34 in)
Weight
K40
144 g (5.08 oz)
Q31
145 g (5.11 oz)
Build
K40
Glass front, plastic back, plastic frame
Q31
-
SIM
K40
· Nano-SIM· Nano-SIM + Nano-SIM
Q31
Nano-SIM
Other
K40
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Q31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
K40
IPS LCD
Q31
IPS LCD
Size
K40
5.7 inches, 83.8 cm2 (~76.2% screen-to-body ratio)
Q31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
K40
720 x 1440 pixels, 18:9 ratio (~282 ppi density)
Q31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
OS
K40
Android 8.1 (Oreo), LG UX 7
Q31
Android 10
Chipset
K40
Mediatek MT6762 Helio P22 (12 nm)
Q31
Mediatek MT6762 Helio P22 (12 nm)
CPU
K40
Octa-core 2.0 GHz Cortex-A53
Q31
Octa-core 2.0 GHz Cortex-A53
GPU
K40
PowerVR GE8320
Q31
PowerVR GE8320
Card slot
K40
microSDXC (dedicated slot)
Q31
microSDXC
Internal
K40
32GB 2GB RAM, 32GB 3GB RAM
Q31
32GB 3GB RAM
Other
K40
eMMC 5.1
Q31
eMMC 5.1
Single
K40
16 MP, f/2.0, 1/3.1", 1.0µm, PDAF
Q31
-
Features
K40
LED flash, panorama, HDR
Q31
LED flash, panorama, HDR
Video
K40
1080p@30fps
Q31
1080p@30fps
Dual
K40
-
Q31
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
K40
8 MP, f/2.0
Q31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Features
K40
LED flash
Q31
-
Video
K40
1080p@30fps
Q31
1080p@30fps
Loudspeaker
K40
Yes
Q31
Yes
3.5mm jack
K40
Yes
Q31
Yes
WLAN
K40
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Q31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
K40
5.0, A2DP, LE
Q31
5.0, A2DP, LE
Positioning
K40
GPS, GLONASS
Q31
GPS
NFC
K40
Yes (market/region dependent)
Q31
No
Radio
K40
No
Q31
No
USB
K40
microUSB 2.0, OTG
Q31
microUSB 2.0
Sensors
K40
Fingerprint (rear-mounted), accelerometer, proximity, compass
Q31
Accelerometer
Type
K40
Li-Ion 3000 mAh, non-removable
Q31
Li-Ion 3000 mAh
Colors
K40
Black, New Moroccan Blue, New Platinum Gray
Q31
Silver
Models
K40
LMX420, LMX420EMW, LM-X420
Q31
LM-Q310N
Price
K40
About 140 EUR
Q31
About 150 EUR