Screen size
Connect 4G MS8404.0"
K31Winner: 5.7"+30%
Quick verdict
K31 leads the measured specs 12-1.
Measured wins
Connect 4G MS840
1
spec wins
Ties
4
equal specs
K31
12
spec wins
Overall winner
Screen size
Technology
Connect 4G MS840
CDMA / EVDO / LTE
K31
GSM / CDMA / HSPA / LTE
2G bands
Connect 4G MS840
CDMA 800 / 1900
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
3G bands
Connect 4G MS840
CDMA2000 1xEV-DO
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Connect 4G MS840
4
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
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Speed
Connect 4G MS840
EV-DO Rev.A 3.1 Mbps, LTE
K31
HSPA, LTE
Announced
Connect 4G MS840
2012, January. Released 2012, February
K31
2020, August 21. Released 2020, August 21
Status
Connect 4G MS840
Discontinued
K31
Discontinued
Dimensions
Connect 4G MS840
117 x 62 x 11.7 mm (4.61 x 2.44 x 0.46 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
Connect 4G MS840
137 g (4.83 oz)
K31
146 g (5.15 oz)
SIM
Connect 4G MS840
Mini-SIM
K31
Nano-SIM + Nano-SIM
Other
Connect 4G MS840
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
Connect 4G MS840
TFT, 256K colors
K31
IPS LCD
Size
Connect 4G MS840
4.0 inches, 44.5 cm2 (~61.3% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
Connect 4G MS840
480 x 840 pixels, 16:9 ratio (~242 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
OS
Connect 4G MS840
Android 2.3.5 (Gingerbread)
K31
Android 10, LG UX 9.1
Chipset
Connect 4G MS840
Qualcomm MSM8660 Snapdragon S3
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
Connect 4G MS840
Dual-core 1.2 GHz Scorpion
K31
Octa-core 2.0 GHz Cortex-A53
GPU
Connect 4G MS840
Adreno 220
K31
PowerVR GE8320
Card slot
Connect 4G MS840
microSDHC (dedicated slot), 2 GB included
K31
microSDXC
Internal
Connect 4G MS840
4GB (1.9GB user available), 1GB RAM
K31
32GB 2GB RAM
Other
Connect 4G MS840
-
K31
eMMC 5.1
Single
Connect 4G MS840
5 MP, AF
K31
-
Features
Connect 4G MS840
LED flash
K31
LED flash, panorama, HDR
Video
Connect 4G MS840
720p@30fps
K31
1080p@30fps
Dual
Connect 4G MS840
-
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
Single
Connect 4G MS840
VGA
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
Connect 4G MS840
K31
1080p@30fps
Loudspeaker
Connect 4G MS840
Yes
K31
Yes
3.5mm jack
Connect 4G MS840
Yes
K31
Yes
WLAN
Connect 4G MS840
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot, DLNA
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
Connect 4G MS840
3.0, A2DP, EDR
K31
5.0, A2DP, LE
Positioning
Connect 4G MS840
GPS, A-GPS
K31
GPS
Radio
Connect 4G MS840
No
K31
No
USB
Connect 4G MS840
microUSB 2.0
K31
microUSB 2.0
NFC
Connect 4G MS840
-
K31
No
Sensors
Connect 4G MS840
Accelerometer, proximity, compass
K31
Fingerprint (rear-mounted), accelerometer
Other
Connect 4G MS840
MP4/H.264 player MP3/WAV/eAAC+ player Organizer Photo/video editor Document viewer Voice memo/dial/commands Predictive text input
K31
-
Type
Connect 4G MS840
Removable Li-Ion 1540 mAh battery
K31
Li-Ion 3000 mAh
Stand-by
Connect 4G MS840
Up to 250 h
K31
-
Talk time
Connect 4G MS840
Up to 4 h 30 min
K31
-
Colors
Connect 4G MS840
Black
K31
Gray
SAR
Connect 4G MS840
1.04 W/kg (head) 1.01 W/kg (body)
K31
-
Price
Connect 4G MS840
About 110 EUR
K31
About 130 EUR
Models
Connect 4G MS840
-
K31
LM-K300Q, LMK300, LGL355DL