Screen size
E900 Optimus 73.8"
K31Winner: 5.7"+33%
Quick verdict
K31 leads the measured specs 14-0.
Measured wins
E900 Optimus 7
0
spec wins
Ties
3
equal specs
K31
14
spec wins
Overall winner
Screen size
Technology
E900 Optimus 7
GSM / HSPA
K31
GSM / CDMA / HSPA / LTE
2G bands
E900 Optimus 7
GSM 850 / 900 / 1800 / 1900
K31
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900
3G bands
E900 Optimus 7
HSDPA 900 / 1900 / 2100 , HSDPA 850 / 1900 - North America
K31
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Speed
E900 Optimus 7
HSPA 7.2/5.76 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
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
K31
HSPA, LTE
4G bands
E900 Optimus 7
-
K31
2, 4, 5, 12, 13, 25, 26, 41, 66, 71
Announced
E900 Optimus 7
2010, October. Released 2010, November
K31
2020, August 21. Released 2020, August 21
Status
E900 Optimus 7
Discontinued
K31
Discontinued
Dimensions
E900 Optimus 7
125 x 59.8 x 11.5 mm (4.92 x 2.35 x 0.45 in)
K31
147.8 x 71.1 x 8.6 mm (5.82 x 2.80 x 0.34 in)
Weight
E900 Optimus 7
157 g (5.54 oz)
K31
146 g (5.15 oz)
SIM
E900 Optimus 7
Mini-SIM
K31
Nano-SIM + Nano-SIM
Other
E900 Optimus 7
-
K31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
E900 Optimus 7
TFT
K31
IPS LCD
Size
E900 Optimus 7
3.8 inches, 41.1 cm2 (~55.0% screen-to-body ratio)
K31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
E900 Optimus 7
480 x 800 pixels, 5:3 ratio (~246 ppi density)
K31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Protection
E900 Optimus 7
Corning Gorilla Glass
K31
-
OS
E900 Optimus 7
Microsoft Windows Phone 7, upgradable to 7.8
K31
Android 10, LG UX 9.1
Chipset
E900 Optimus 7
Qualcomm QSD8650 Snapdragon S1
K31
Mediatek MT6762 Helio P22 (12 nm)
CPU
E900 Optimus 7
1.0 GHz Scorpion
K31
Octa-core 2.0 GHz Cortex-A53
GPU
E900 Optimus 7
Adreno 200
K31
PowerVR GE8320
Card slot
E900 Optimus 7
No
K31
microSDXC
Internal
E900 Optimus 7
16GB 512MB RAM
K31
32GB 2GB RAM
Other
E900 Optimus 7
-
K31
eMMC 5.1
Single
E900 Optimus 7
5 MP, AF
K31
-
Features
E900 Optimus 7
LED flash
K31
LED flash, panorama, HDR
Video
E900 Optimus 7
720p@24fps
K31
1080p@30fps
Dual
E900 Optimus 7
-
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
Other
E900 Optimus 7
No
K31
-
Single
E900 Optimus 7
-
K31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
E900 Optimus 7
-
K31
1080p@30fps
Loudspeaker
E900 Optimus 7
Yes
K31
Yes
3.5mm jack
E900 Optimus 7
Yes
K31
Yes
WLAN
E900 Optimus 7
Wi-Fi 802.11 b/g/n, DLNA
K31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
E900 Optimus 7
2.1, A2DP
K31
5.0, A2DP, LE
Positioning
E900 Optimus 7
GPS, A-GPS
K31
GPS
Radio
E900 Optimus 7
Stereo FM radio
K31
No
USB
E900 Optimus 7
microUSB 2.0
K31
microUSB 2.0
NFC
E900 Optimus 7
-
K31
No
Sensors
E900 Optimus 7
Accelerometer, proximity, compass
K31
Fingerprint (rear-mounted), accelerometer
Browser
E900 Optimus 7
HTML
K31
-
Other
E900 Optimus 7
Facebook integration Document viewer/editor MP4/WMV player MP3/WAV/WMA/eAAC+ player Organizer Voice memo Predictive text input
K31
-
Type
E900 Optimus 7
Removable Li-Ion 1500 mAh battery
K31
Li-Ion 3000 mAh
Stand-by
E900 Optimus 7
Up to 330 h (2G) / Up to 330 h (3G)
K31
-
Talk time
E900 Optimus 7
Up to 6 h 40 min (2G) / Up to 5 h (3G)
K31
-
Colors
E900 Optimus 7
Black
K31
Gray
SAR
E900 Optimus 7
0.59 W/kg (head) 0.63 W/kg (body)
K31
-
SAR EU
E900 Optimus 7
0.94 W/kg (head) 1.47 W/kg (body)
K31
-
Price
E900 Optimus 7
About 120 EUR
K31
About 130 EUR
Models
E900 Optimus 7
-
K31
LM-K300Q, LMK300, LGL355DL