Screen size
GS390 Prime3.0"
K31Winner: 5.7"+47%
Quick verdict
K31 leads the measured specs 13-1.
Measured wins
GS390 Prime
1
spec wins
Ties
3
equal specs
K31
13
spec wins
Overall winner
Screen size
Technology
GS390 Prime
GSM
K31
GSM / CDMA / HSPA / LTE
2G bands
GS390 Prime
GSM 850 / 1800 / 1900
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
GPRS
GS390 Prime
Yes
K31
-
EDGE
GS390 Prime
Yes
K31
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
SD card
equal specsStereo speakers
-
3G bands
GS390 Prime
-
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
GS390 Prime
-
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Speed
GS390 Prime
-
K31
HSPA, LTE
Announced
GS390 Prime
2010, October. Released 2010, October
K31
2020, August 21. Released 2020, August 21
Status
GS390 Prime
Discontinued
K31
Discontinued
Dimensions
GS390 Prime
108 x 52.8 x 12.7 mm (4.25 x 2.08 x 0.5 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
GS390 Prime
89 g (3.14 oz)
K31
146 g (5.15 oz)
SIM
GS390 Prime
Mini-SIM
K31
Nano-SIM + Nano-SIM
Other
GS390 Prime
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
GS390 Prime
TFT, 256K colors
K31
IPS LCD
Size
GS390 Prime
3.0 inches, 25.6 cm2 (~44.9% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
GS390 Prime
240 x 400 pixels, 5:3 ratio (~155 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Card slot
GS390 Prime
microSDHC (dedicated slot)
K31
microSDXC
Phonebook
GS390 Prime
Yes, Photocall
K31
-
Call records
GS390 Prime
Yes
K31
-
Internal
GS390 Prime
-
K31
32GB 2GB RAM
Other
GS390 Prime
-
K31
eMMC 5.1
Single
GS390 Prime
2 MP
K31
-
Video
GS390 Prime
Yes
K31
1080p@30fps
Dual
GS390 Prime
-
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
Features
GS390 Prime
-
K31
LED flash, panorama, HDR
Other
GS390 Prime
No
K31
-
Single
GS390 Prime
-
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
GS390 Prime
-
K31
1080p@30fps
Loudspeaker
GS390 Prime
Yes
K31
Yes
3.5mm jack
GS390 Prime
No
K31
Yes
WLAN
GS390 Prime
No
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
GS390 Prime
2.1, A2DP
K31
5.0, A2DP, LE
Positioning
GS390 Prime
No
K31
GPS
Radio
GS390 Prime
Stereo FM radio
K31
No
USB
GS390 Prime
microUSB 2.0
K31
microUSB 2.0
NFC
GS390 Prime
-
K31
No
Sensors
GS390 Prime
K31
Fingerprint (rear-mounted), accelerometer
Messaging
GS390 Prime
SMS, MMS, Email, IM
K31
-
Browser
GS390 Prime
WAP 2.0/xHTML, HTML
K31
-
Games
GS390 Prime
Yes
K31
-
Java
GS390 Prime
Yes, MIDP 2.0
K31
-
Other
GS390 Prime
SNS integration MP3/WAV/eAAC+ MP4/H.264 player Organizer Voice memo Predictive text input
K31
-
Type
GS390 Prime
Removable Li-Ion 900 mAh battery
K31
Li-Ion 3000 mAh
Stand-by
GS390 Prime
Up to 384 h
K31
-
Talk time
GS390 Prime
Up to 4 h
K31
-
Colors
GS390 Prime
Black
K31
Gray
SAR
GS390 Prime
1.10 W/kg (head) 0.74 W/kg (body)
K31
-
Price
GS390 Prime
About 70 EUR
K31
About 130 EUR
Models
GS390 Prime
-
K31
LM-K300Q, LMK300, LGL355DL
OS
GS390 Prime
-
K31
Android 10, LG UX 9.1
Chipset
GS390 Prime
-
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
GS390 Prime
-
K31
Octa-core 2.0 GHz Cortex-A53
GPU
GS390 Prime
-
K31
PowerVR GE8320