Screen size
Optimus LTE SU6404.5"
Q31Winner: 5.7"+21%
Quick verdict
Q31 leads the measured specs 11-2.
Measured wins
Optimus LTE SU640
2
spec wins
Ties
4
equal specs
Q31
11
spec wins
Overall winner
Screen size
Technology
Optimus LTE SU640
GSM / HSPA / LTE
Q31
GSM / HSPA / LTE
2G bands
Optimus LTE SU640
GSM 850 / 900 / 1800 / 1900
Q31
GSM 850 / 900 / 1800 / 1900
3G bands
Optimus LTE SU640
HSDPA 850 / 1900
Q31
HSDPA 850 / 900 / 1900 / 2100
4G bands
Optimus LTE SU640
LTE 800
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
Q31
LTE
Speed
Optimus LTE SU640
HSPA, LTE
Q31
HSPA, LTE
Announced
Optimus LTE SU640
2011, October. Released 2012, August
Q31
2020, September 17. Released 2020, September 25
Status
Optimus LTE SU640
Discontinued
Q31
Discontinued
Dimensions
Optimus LTE SU640
132.9 x 67.9 x 10.4 mm (5.23 x 2.67 x 0.41 in)
Q31
147.9 x 71 x 8.7 mm (5.82 x 2.80 x 0.34 in)
Weight
Optimus LTE SU640
135 g (4.76 oz)
Q31
145 g (5.11 oz)
SIM
Optimus LTE SU640
Mini-SIM
Q31
Nano-SIM
Other
Optimus LTE SU640
-
Q31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
Optimus LTE SU640
HD-IPS LCD
Q31
IPS LCD
Size
Optimus LTE SU640
4.5 inches, 55.8 cm2 (~61.9% screen-to-body ratio)
Q31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
Optimus LTE SU640
720 x 1280 pixels, 16:9 ratio (~326 ppi density)
Q31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Other
Optimus LTE SU640
True HD Graphic Engine
Q31
-
OS
Optimus LTE SU640
Android 2.3.5 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich)
Q31
Android 10
Chipset
Optimus LTE SU640
Qualcomm MSM8660 Snapdragon S3
Q31
Mediatek MT6762 Helio P22 (12 nm)
CPU
Optimus LTE SU640
Dual-core 1.5 GHz Scorpion
Q31
Octa-core 2.0 GHz Cortex-A53
GPU
Optimus LTE SU640
Adreno 220
Q31
PowerVR GE8320
Card slot
Optimus LTE SU640
microSDHC (dedicated slot), 16 GB included
Q31
microSDXC
Internal
Optimus LTE SU640
4GB 1GB RAM
Q31
32GB 3GB RAM
Other
Optimus LTE SU640
-
Q31
eMMC 5.1
Single
Optimus LTE SU640
8 MP, AF
Q31
-
Features
Optimus LTE SU640
LED flash
Q31
LED flash, panorama, HDR
Video
Optimus LTE SU640
1080p@30fps
Q31
1080p@30fps
Dual
Optimus LTE SU640
-
Q31
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
Single
Optimus LTE SU640
1.3 MP
Q31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
Optimus LTE SU640
Q31
1080p@30fps
Loudspeaker
Optimus LTE SU640
Yes
Q31
Yes
3.5mm jack
Optimus LTE SU640
Yes
Q31
Yes
WLAN
Optimus LTE SU640
Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, hotspot
Q31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
Optimus LTE SU640
3.0, A2DP
Q31
5.0, A2DP, LE
Positioning
Optimus LTE SU640
GPS, A-GPS
Q31
GPS
Radio
Optimus LTE SU640
No
Q31
No
USB
Optimus LTE SU640
microUSB 2.0 (MHL TV-out)
Q31
microUSB 2.0
NFC
Optimus LTE SU640
-
Q31
No
Sensors
Optimus LTE SU640
Accelerometer, gyro, proximity, compass
Q31
Accelerometer
Other
Optimus LTE SU640
T-DMB TV tuner MP4/H.264/WMV/DviX player MP3/WMA/WAV/FLAC/eAAC+ player True HD movie editor Document viewer/editor Organizer Voice memo/dial/commands Predictive text input
Q31
-
Type
Optimus LTE SU640
Removable Li-Ion 1830 mAh battery
Q31
Li-Ion 3000 mAh
Stand-by
Optimus LTE SU640
Up to 400 h
Q31
-
Talk time
Optimus LTE SU640
Up to 7 h
Q31
-
Colors
Optimus LTE SU640
Black, White
Q31
Silver
Price
Optimus LTE SU640
About 120 EUR
Q31
About 150 EUR
Models
Optimus LTE SU640
-
Q31
LM-Q310N