Screen size
GB1251.5"
K31Winner: 5.7"+74%
Quick verdict
K31 leads the measured specs 15-1.
Measured wins
GB125
1
spec wins
Ties
1
equal specs
K31
15
spec wins
Overall winner
Screen size
Technology
GB125
GSM
K31
GSM / CDMA / HSPA / LTE
2G bands
GB125
GSM 900 / 1800
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
GPRS
GB125
Yes
K31
-
EDGE
GB125
No
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
5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
-
3G bands
GB125
-
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
GB125
-
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Speed
GB125
-
K31
HSPA, LTE
Announced
GB125
2009, March. Released 2009, July
K31
2020, August 21. Released 2020, August 21
Status
GB125
Discontinued
K31
Discontinued
Dimensions
GB125
87 x 45 x 19.3 mm (3.43 x 1.77 x 0.76 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
GB125
90 g (3.17 oz)
K31
146 g (5.15 oz)
SIM
GB125
Mini-SIM
K31
Nano-SIM + Nano-SIM
Other
GB125
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
GB125
CSTN, 65K colors
K31
IPS LCD
Size
GB125
1.5 inches, 7.3 cm2 (~18.5% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
GB125
128 x 128 pixels, 1:1 ratio (~121 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Other
GB125
Second external monochrome display
K31
-
Card slot
GB125
No
K31
microSDXC
Phonebook
GB125
Yes
K31
-
Call records
GB125
Yes
K31
-
Internal
GB125
Yes
K31
32GB 2GB RAM
Other
GB125
-
K31
eMMC 5.1
Other
GB125
No
K31
-
Loudspeaker
GB125
Yes
K31
Yes
3.5mm jack
GB125
No
K31
Yes
WLAN
GB125
No
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
GB125
No
K31
5.0, A2DP, LE
Positioning
GB125
No
K31
GPS
Radio
GB125
FM radio, built-in antenna
K31
No
USB
GB125
No
K31
microUSB 2.0
NFC
GB125
-
K31
No
Sensors
GB125
K31
Fingerprint (rear-mounted), accelerometer
Messaging
GB125
SMS
K31
-
Browser
GB125
WAP 2.0/xHTML
K31
-
Games
GB125
Yes
K31
-
Java
GB125
Yes, MIDP 2.0
K31
-
Other
GB125
Phone tracker Calculator Predictive text input
K31
-
Type
GB125
Removable Li-Ion 950 mAh battery
K31
Li-Ion 3000 mAh
Stand-by
GB125
Up to 440 h
K31
-
Talk time
GB125
Up to 6 h 30 min
K31
-
Colors
GB125
Black
K31
Gray
Price
GB125
About 40 EUR
K31
About 130 EUR
Models
GB125
-
K31
LM-K300Q, LMK300, LGL355DL
OS
GB125
-
K31
Android 10, LG UX 9.1
Chipset
GB125
-
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
GB125
-
K31
Octa-core 2.0 GHz Cortex-A53
GPU
GB125
-
K31
PowerVR GE8320
Dual
GB125
-
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
GB125
-
K31
LED flash, panorama, HDR
Video
GB125
-
K31
1080p@30fps
Single
GB125
-
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
GB125
-
K31
1080p@30fps