Screen size
K31Winner: 5.7"+58%
KF750 Secret2.4"
Quick verdict
K31 leads the measured specs 13-1.
Measured wins
K31
13
spec wins
Overall winner
Ties
3
equal specs
KF750 Secret
1
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
KF750 Secret
GSM / HSPA
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
KF750 Secret
GSM 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
KF750 Secret
HSDPA 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
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
KF750 Secret
-
Speed
K31
HSPA, LTE
KF750 Secret
HSPA 3.6/0.384 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
KF750 Secret
2008, April. Released 2008, June
Status
K31
Discontinued
KF750 Secret
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
KF750 Secret
102.8 x 50.8 x 11.8 mm (4.05 x 2.0 x 0.46 in)
Weight
K31
146 g (5.15 oz)
KF750 Secret
116 g (4.09 oz)
SIM
K31
Nano-SIM + Nano-SIM
KF750 Secret
Mini-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
KF750 Secret
-
Type
K31
IPS LCD
KF750 Secret
TFT, 256K colors
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
KF750 Secret
2.4 inches, 17.8 cm2 (~34.2% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
KF750 Secret
240 x 320 pixels, 4:3 ratio (~167 ppi density)
Protection
K31
-
KF750 Secret
Scratch-resistant glass
Other
K31
-
KF750 Secret
Limited touchscreen functionality
OS
K31
Android 10, LG UX 9.1
KF750 Secret
-
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
KF750 Secret
-
CPU
K31
Octa-core 2.0 GHz Cortex-A53
KF750 Secret
-
GPU
K31
PowerVR GE8320
KF750 Secret
-
Card slot
K31
microSDXC
KF750 Secret
microSDHC (dedicated slot)
Internal
K31
32GB 2GB RAM
KF750 Secret
100MB
Other
K31
eMMC 5.1
KF750 Secret
100 MB user available memory
Phonebook
K31
-
KF750 Secret
1000 entries, Photocall
Call records
K31
-
KF750 Secret
40 dialed, 40 received, 40 missed calls
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
KF750 Secret
-
Features
K31
LED flash, panorama, HDR
KF750 Secret
LED flash
Video
K31
1080p@30fps
KF750 Secret
480p@30fps, 320p@120fps
Single
K31
-
KF750 Secret
5 MP, AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
KF750 Secret
Videocall camera
Video
K31
1080p@30fps
KF750 Secret
Loudspeaker
K31
Yes
KF750 Secret
Yes
3.5mm jack
K31
Yes
KF750 Secret
No
Alert types
K31
-
KF750 Secret
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
KF750 Secret
No
Bluetooth
K31
5.0, A2DP, LE
KF750 Secret
2.0, A2DP
Positioning
K31
GPS
KF750 Secret
No
NFC
K31
No
KF750 Secret
-
Radio
K31
No
KF750 Secret
Stereo FM radio, RDS
USB
K31
microUSB 2.0
KF750 Secret
2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
KF750 Secret
Accelerometer
Messaging
K31
-
KF750 Secret
SMS, EMS, MMS, Email
Browser
K31
-
KF750 Secret
WAP 2.0/xHTML, HTML
Games
K31
-
KF750 Secret
6, incl. motion-based + downloadable
Java
K31
-
KF750 Secret
Yes, MIDP 2.0
Other
K31
-
KF750 Secret
Carbon fiber battery cover MP3/WMA/AAC/AAC+ player MP4/DivX(up to 640x480) player TV-out Document viewer (Word, Excel, PowerPoint, PDF) Predictive text input Organizer Voice memo
Type
K31
Li-Ion 3000 mAh
KF750 Secret
Removable Li-Ion 800 mAh battery
Stand-by
K31
-
KF750 Secret
Up to 260 h
Talk time
K31
-
KF750 Secret
Up to 4 h
Colors
K31
Gray
KF750 Secret
Black, Ruby Violet, Titan Gold
Models
K31
LM-K300Q, LMK300, LGL355DL
KF750 Secret
-
Price
K31
About 130 EUR
KF750 Secret
About 100 EUR
SAR
K31
-
KF750 Secret
0.50 W/kg (head) 0.76 W/kg (body)