Screen size
K31Winner: 5.7"+51%
Optimus Chat C5502.8"
Quick verdict
K31 leads the measured specs 11-2.
Measured wins
K31
11
spec wins
Overall winner
Ties
4
equal specs
Optimus Chat C550
2
spec wins
Screen size
Technology
K31
GSM / CDMA / HSPA / LTE
Optimus Chat C550
GSM / HSPA
2G bands
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
Optimus Chat C550
GSM 850 / 900 / 1800 / 1900
3G bands
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Optimus Chat C550
HSDPA 900 / 1700 / 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
equal specsSD card
equal specsStereo speakers
Optimus Chat C550
-
Speed
K31
HSPA, LTE
Optimus Chat C550
HSPA 7.2/5.76 Mbps
Announced
K31
2020, August 21. Released 2020, August 21
Optimus Chat C550
2011, February. Released 2011, March
Status
K31
Discontinued
Optimus Chat C550
Discontinued
Dimensions
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Optimus Chat C550
109 x 59 x 16 mm (4.29 x 2.32 x 0.63 in)
Weight
K31
146 g (5.15 oz)
Optimus Chat C550
122 g (4.30 oz)
SIM
K31
Nano-SIM + Nano-SIM
Optimus Chat C550
Mini-SIM
Other
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Optimus Chat C550
-
Keyboard
K31
-
Optimus Chat C550
QWERTY
Type
K31
IPS LCD
Optimus Chat C550
TFT, 256K colors
Size
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Optimus Chat C550
2.8 inches, 23.3 cm2 (~36.3% screen-to-body ratio)
Resolution
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Optimus Chat C550
320 x 480 pixels, 3:2 ratio (~206 ppi density)
OS
K31
Android 10, LG UX 9.1
Optimus Chat C550
Android 2.2 (Froyo)
Chipset
K31
Mediatek MT6762 Helio P22 (12 nm)
Optimus Chat C550
-
CPU
K31
Octa-core 2.0 GHz Cortex-A53
Optimus Chat C550
-
GPU
K31
PowerVR GE8320
Optimus Chat C550
-
Card slot
K31
microSDXC
Optimus Chat C550
microSDHC (dedicated slot)
Internal
K31
32GB 2GB RAM
Optimus Chat C550
140MB
Other
K31
eMMC 5.1
Optimus Chat C550
-
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
Optimus Chat C550
-
Features
K31
LED flash, panorama, HDR
Optimus Chat C550
-
Video
K31
1080p@30fps
Optimus Chat C550
Yes
Single
K31
-
Optimus Chat C550
3.15 MP, AF
Single
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Optimus Chat C550
-
Video
K31
1080p@30fps
Optimus Chat C550
-
Other
K31
-
Optimus Chat C550
No
Loudspeaker
K31
Yes
Optimus Chat C550
Yes
3.5mm jack
K31
Yes
Optimus Chat C550
Yes
WLAN
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Optimus Chat C550
Wi-Fi 802.11 b/g, Wi-Fi Direct, hotspot
Bluetooth
K31
5.0, A2DP, LE
Optimus Chat C550
2.1, A2DP, EDR
Positioning
K31
GPS
Optimus Chat C550
GPS, A-GPS
NFC
K31
No
Optimus Chat C550
-
Radio
K31
No
Optimus Chat C550
FM radio
USB
K31
microUSB 2.0
Optimus Chat C550
microUSB 2.0
Sensors
K31
Fingerprint (rear-mounted), accelerometer
Optimus Chat C550
Accelerometer
Browser
K31
-
Optimus Chat C550
HTML
Other
K31
-
Optimus Chat C550
MP4/H.264/WMV player MP3/WAV/WMA/eAAC+ player Document viewer Organizer Voice memo Predictive text input
Type
K31
Li-Ion 3000 mAh
Optimus Chat C550
Removable Li-Ion 1500 mAh battery
Stand-by
K31
-
Optimus Chat C550
Up to 440 h
Talk time
K31
-
Optimus Chat C550
Up to 5 h
Colors
K31
Gray
Optimus Chat C550
Black, silver, blue, red, pink
Models
K31
LM-K300Q, LMK300, LGL355DL
Optimus Chat C550
-
Price
K31
About 130 EUR
Optimus Chat C550
About 40 EUR
SAR
K31
-
Optimus Chat C550
0.49 W/kg (head) 0.39 W/kg (body)
SAR EU
K31
-
Optimus Chat C550
0.71 W/kg (head) 1.24 W/kg (body)