Screen size
CU5152.0"
K31Winner: 5.7"+65%
Quick verdict
K31 leads the measured specs 14-1.
Measured wins
CU515
1
spec wins
Ties
2
equal specs
K31
14
spec wins
Overall winner
Screen size
Technology
CU515
GSM / HSPA
K31
GSM / CDMA / HSPA / LTE
2G bands
CU515
GSM 850 / 900 / 1800 / 1900
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
3G bands
CU515
HSDPA 850 / 1900
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Speed
CU515
HSPA 3.6/0.384 Mbps
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
equal specsStereo speakers
K31
HSPA, LTE
4G bands
CU515
-
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Announced
CU515
2007, October
K31
2020, August 21. Released 2020, August 21
Status
CU515
Discontinued
K31
Discontinued
Dimensions
CU515
96 x 49.5 x 18 mm (3.78 x 1.95 x 0.71 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
CU515
95 g (3.35 oz)
K31
146 g (5.15 oz)
SIM
CU515
Mini-SIM
K31
Nano-SIM + Nano-SIM
Other
CU515
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
CU515
TFT, 65K colors
K31
IPS LCD
Size
CU515
2.0 inches, 12.6 cm2 (~26.5% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
CU515
176 x 220 pixels (~141 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Other
CU515
Second external monochrome STN, 96 x 64 pixels, 0.98 inches Downloadable wallpapers
K31
-
Card slot
CU515
microSDHC (dedicated slot)
K31
microSDXC
Phonebook
CU515
500 entries
K31
-
Call records
CU515
10 dialed, 10 received, 10 missed calls
K31
-
Internal
CU515
55MB
K31
32GB 2GB RAM
Other
CU515
-
K31
eMMC 5.1
Single
CU515
1.3 MP
K31
-
Video
CU515
QCIF
K31
1080p@30fps
Dual
CU515
-
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
CU515
-
K31
LED flash, panorama, HDR
Other
CU515
No
K31
-
Single
CU515
-
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
CU515
-
K31
1080p@30fps
Loudspeaker
CU515
No
K31
Yes
Alert types
CU515
Vibration; Downloadable polyphonic, MP3 ringtones
K31
-
3.5mm jack
CU515
No
K31
Yes
WLAN
CU515
No
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
CU515
1.2, A2DP
K31
5.0, A2DP, LE
Positioning
CU515
No
K31
GPS
Radio
CU515
No
K31
No
USB
CU515
Proprietary
K31
microUSB 2.0
NFC
CU515
-
K31
No
Sensors
CU515
K31
Fingerprint (rear-mounted), accelerometer
Messaging
CU515
SMS, EMS, MMS, Email
K31
-
Browser
CU515
WAP 2.0/xHTML
K31
-
Games
CU515
Yes + downloadable
K31
-
Java
CU515
Yes, MIDP 2.0
K31
-
Other
CU515
MP3/AAC/MP4 player Predictive text input Organizer Tip Calculator World Clock Stop Watch Date Finder D-Day Counter
K31
-
Type
CU515
Removable Li-Ion 1000 mAh battery
K31
Li-Ion 3000 mAh
Stand-by
CU515
Up to 400 h
K31
-
Talk time
CU515
Up to 3 h 30 min
K31
-
Colors
CU515
Black
K31
Gray
SAR
CU515
1.30 W/kg (head) 1.05 W/kg (body)
K31
-
Price
CU515
About 90 EUR
K31
About 130 EUR
Models
CU515
-
K31
LM-K300Q, LMK300, LGL355DL
OS
CU515
-
K31
Android 10, LG UX 9.1
Chipset
CU515
-
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
CU515
-
K31
Octa-core 2.0 GHz Cortex-A53
GPU
CU515
-
K31
PowerVR GE8320