Screen size
K31Winner: 5.7"
U8100—
Quick verdict
K31 leads the measured specs 15-1.
Measured wins
K31
15
spec wins
Overall winner
Ties
1
equal specs
U8100
1
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
U8100
GSM / UMTS
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
U8100
GSM 900 / 1800
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
U8100
UMTS 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
5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
U8100
-
Speed
K31
HSPA, LTE
U8100
Yes, 384 kbps
Announced
K31
2020, August 21. Released 2020, August 21
U8100
2003, Q3
Status
K31
Discontinued
U8100
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
U8100
96 x 50 x 22 mm (3.78 x 1.97 x 0.87 in)
Weight
K31
146 g (5.15 oz)
U8100
120 g (4.23 oz)
SIM
K31
Nano-SIM + Nano-SIM
U8100
Mini-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
U8100
-
Type
K31
IPS LCD
U8100
TFD, 64K colors
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
U8100
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
U8100
176 x 220 pixels, 7 lines
Other
K31
-
U8100
Second external display, 64x96 pixels Four way navigation keys Wallpapers
OS
K31
Android 10, LG UX 9.1
U8100
-
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
U8100
-
CPU
K31
Octa-core 2.0 GHz Cortex-A53
U8100
-
GPU
K31
PowerVR GE8320
U8100
-
Card slot
K31
microSDXC
U8100
No
Internal
K31
32GB 2GB RAM
U8100
64MB
Other
K31
eMMC 5.1
U8100
10 voice dial numbers 20 sec voice memo
Phonebook
K31
-
U8100
500 entries, 7 contact groups
Call records
K31
-
U8100
20 dialed, received and 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
U8100
-
Features
K31
LED flash, panorama, HDR
U8100
-
Video
K31
1080p@30fps
U8100
Yes
Single
K31
-
U8100
VGA
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
U8100
-
Video
K31
1080p@30fps
U8100
-
Other
K31
-
U8100
No
Loudspeaker
K31
Yes
U8100
No
3.5mm jack
K31
Yes
U8100
No
Alert types
K31
-
U8100
Vibration; Downloadable polyphonic ringtones
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
U8100
No
Bluetooth
K31
5.0, A2DP, LE
U8100
No
Positioning
K31
GPS
U8100
No
NFC
K31
No
U8100
-
Radio
K31
No
U8100
No
USB
K31
microUSB 2.0
U8100
Proprietary
Infrared port
K31
-
U8100
Yes
Sensors
K31
Fingerprint (rear-mounted), accelerometer
U8100
Messaging
K31
-
U8100
SMS, EMS, MMS
Browser
K31
-
U8100
WAP 2.0/xHTML
Clock
K31
-
U8100
Yes
Alarm
K31
-
U8100
Yes
Games
K31
-
U8100
Yes
Java
K31
-
U8100
Yes
Other
K31
-
U8100
Predictive text input MP3 player Voice memo Voice dial Organizer
Type
K31
Li-Ion 3000 mAh
U8100
Removable Li-Po 1050 mAh battery
Stand-by
K31
-
U8100
Up to 200 h
Talk time
K31
-
U8100
Up to 2 h
Colors
K31
Gray
U8100
Models
K31
LM-K300Q, LMK300, LGL355DL
U8100
-
Price
K31
About 130 EUR
U8100
-