Screen size
K31Winner: 5.7"+3.5%
Ray5.5"
Quick verdict
K31 leads the measured specs 9-1.
Measured wins
K31
9
spec wins
Overall winner
Ties
7
equal specs
Ray
1
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Ray
GSM / HSPA
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Ray
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Ray
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
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Ray
-
Speed
K31
HSPA, LTE
Ray
HSPA 21.1/5.76 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Ray
2015, November. Released 2016, January
Status
K31
Discontinued
Ray
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Ray
152.5 x 76.4 x 9.3 mm (6.00 x 3.01 x 0.37 in)
Weight
K31
146 g (5.15 oz)
Ray
158 g (5.57 oz)
SIM
K31
Nano-SIM + Nano-SIM
Ray
Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by)
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Ray
-
Type
K31
IPS LCD
Ray
IPS LCD
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Ray
5.5 inches, 83.4 cm2 (~71.6% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Ray
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
OS
K31
Android 10, LG UX 9.1
Ray
Android 5.1 (Lollipop)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Ray
Mediatek MT6592M (28 nm)
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Ray
Octa-core 1.4 GHz Cortex-A7
GPU
K31
PowerVR GE8320
Ray
Mali-450MP4
Card slot
K31
microSDXC
Ray
microSDXC (dedicated slot)
Internal
K31
32GB 2GB RAM
Ray
16GB 1GB RAM
Other
K31
eMMC 5.1
Ray
-
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
Ray
-
Features
K31
LED flash, panorama, HDR
Ray
LED flash
Video
K31
1080p@30fps
Ray
1080p@30fps
Single
K31
-
Ray
13 MP, AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Ray
8 MP
Video
K31
1080p@30fps
Ray
Loudspeaker
K31
Yes
Ray
Yes
3.5mm jack
K31
Yes
Ray
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Ray
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
K31
5.0, A2DP, LE
Ray
4.0, A2DP
Positioning
K31
GPS
Ray
GPS
NFC
K31
No
Ray
No
Radio
K31
No
Ray
No
USB
K31
microUSB 2.0
Ray
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Ray
Accelerometer, proximity
Type
K31
Li-Ion 3000 mAh
Ray
Li-Ion 3000 mAh, removable
Colors
K31
Gray
Ray
Silver, Gold, Titan Black
Models
K31
LM-K300Q, LMK300, LGL355DL
Ray
-
Price
K31
About 130 EUR
Ray
About 190 EUR