Screen size
K31Winner: 5.7"+60%
X3502.3"
Quick verdict
K31 leads the measured specs 12-1.
Measured wins
K31
12
spec wins
Overall winner
Ties
4
equal specs
X350
1
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
X350
GSM
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
X350
GSM 850 / 900 / 1800 / 1900 - SIM 1, GSM 850 / 900 / 1800 / 1900 - SIM 2
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
X350
-
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
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
X350
-
Speed
K31
HSPA, LTE
X350
-
GPRS
K31
-
X350
Yes
EDGE
K31
-
X350
Yes
Announced
K31
2020, August 21. Released 2020, August 21
X350
2011, Q4. Released 2011, December
Status
K31
Discontinued
X350
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
X350
111 x 61 x 13.5 mm (4.37 x 2.40 x 0.53 in)
Weight
K31
146 g (5.15 oz)
X350
116 g (4.09 oz)
SIM
K31
Nano-SIM + Nano-SIM
X350
Dual SIM (Mini-SIM, dual stand-by)
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
X350
-
Keyboard
K31
-
X350
QWERTY
Type
K31
IPS LCD
X350
TFT, 65K colors
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
X350
2.3 inches, 16.4 cm2 (~24.2% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
X350
320 x 240 pixels, 4:3 ratio (~174 ppi density)
OS
K31
Android 10, LG UX 9.1
X350
-
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
X350
-
CPU
K31
Octa-core 2.0 GHz Cortex-A53
X350
-
GPU
K31
PowerVR GE8320
X350
-
Card slot
K31
microSDXC
X350
microSDHC (dedicated slot), 2 GB included
Internal
K31
32GB 2GB RAM
X350
43MB
Other
K31
eMMC 5.1
X350
-
Phonebook
K31
-
X350
1000 entries, Photocall
Call records
K31
-
X350
Yes
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
X350
-
Features
K31
LED flash, panorama, HDR
X350
-
Video
K31
1080p@30fps
X350
Yes
Single
K31
-
X350
2 MP
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
X350
-
Video
K31
1080p@30fps
X350
-
Other
K31
-
X350
No
Loudspeaker
K31
Yes
X350
Yes
3.5mm jack
K31
Yes
X350
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
X350
No
Bluetooth
K31
5.0, A2DP, LE
X350
Yes
Positioning
K31
GPS
X350
No
NFC
K31
No
X350
-
Radio
K31
No
X350
FM radio
USB
K31
microUSB 2.0
X350
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
X350
Messaging
K31
-
X350
SMS, MMS, Email, IM
Games
K31
-
X350
Yes
Java
K31
-
X350
Yes, MIDP 2.0
Other
K31
-
X350
ISDB-T Digital TV SNS applications MP3/eAAC+/WAV player MP4/H.264 player Organizer Voice memo Predictive text input
Type
K31
Li-Ion 3000 mAh
X350
Removable Li-Ion 1500 mAh battery
Stand-by
K31
-
X350
Up to 555 h
Talk time
K31
-
X350
Up to 5 h 30 min
Colors
K31
Gray
X350
Black
Models
K31
LM-K300Q, LMK300, LGL355DL
X350
-
Price
K31
About 130 EUR
X350
About 80 EUR
SAR EU
K31
-
X350
0.78 W/kg (head) 0.45 W/kg (body)