Screen size
GT540 Optimus3.0"
Q31Winner: 5.7"+47%
Quick verdict
Q31 leads the measured specs 12-2.
Measured wins
GT540 Optimus
2
spec wins
Ties
3
equal specs
Q31
12
spec wins
Overall winner
Screen size
Technology
GT540 Optimus
GSM / HSPA
Q31
GSM / HSPA / LTE
2G bands
GT540 Optimus
GSM 850 / 900 / 1800 / 1900
Q31
GSM 850 / 900 / 1800 / 1900
3G bands
GT540 Optimus
HSDPA 900 / 2100 , HSDPA 850 / 2100
Q31
HSDPA 850 / 900 / 1900 / 2100
Speed
GT540 Optimus
HSPA 7.2/0.384 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
equal specsSD card
equal specsStereo speakers
Q31
HSPA, LTE
4G bands
GT540 Optimus
-
Q31
LTE
Announced
GT540 Optimus
2010, January. Released 2010, June
Q31
2020, September 17. Released 2020, September 25
Status
GT540 Optimus
Discontinued
Q31
Discontinued
Dimensions
GT540 Optimus
109 x 54.5 x 12.7 mm (4.29 x 2.15 x 0.5 in)
Q31
147.9 x 71 x 8.7 mm (5.82 x 2.80 x 0.34 in)
Weight
GT540 Optimus
115.5 g (4.06 oz)
Q31
145 g (5.11 oz)
SIM
GT540 Optimus
Mini-SIM
Q31
Nano-SIM
Other
GT540 Optimus
-
Q31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
GT540 Optimus
TFT resistive touchscreen, 256K colors (65K effective)
Q31
IPS LCD
Size
GT540 Optimus
3.0 inches, 26.8 cm2 (~45.1% screen-to-body ratio)
Q31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
GT540 Optimus
320 x 480 pixels, 3:2 ratio (~192 ppi density)
Q31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
OS
GT540 Optimus
Android 1.6 (Donut), upgradable to 2.1 (Eclair)
Q31
Android 10
CPU
GT540 Optimus
600 MHz
Q31
Octa-core 2.0 GHz Cortex-A53
Chipset
GT540 Optimus
-
Q31
Mediatek MT6762 Helio P22 (12 nm)
GPU
GT540 Optimus
-
Q31
PowerVR GE8320
Card slot
GT540 Optimus
microSDHC (dedicated slot)
Q31
microSDXC
Internal
GT540 Optimus
139MB 156MB RAM
Q31
32GB 3GB RAM
Other
GT540 Optimus
-
Q31
eMMC 5.1
Single
GT540 Optimus
3.15 MP, AF
Q31
-
Video
GT540 Optimus
480p@17fps
Q31
1080p@30fps
Dual
GT540 Optimus
-
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
Features
GT540 Optimus
-
Q31
LED flash, panorama, HDR
Other
GT540 Optimus
No
Q31
-
Single
GT540 Optimus
-
Q31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
GT540 Optimus
-
Q31
1080p@30fps
Loudspeaker
GT540 Optimus
Yes
Q31
Yes
3.5mm jack
GT540 Optimus
Yes
Q31
Yes
WLAN
GT540 Optimus
Wi-Fi 802.11 b/g
Q31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
GT540 Optimus
2.1, A2DP
Q31
5.0, A2DP, LE
Positioning
GT540 Optimus
GPS, A-GPS
Q31
GPS
Radio
GT540 Optimus
Stereo FM radio, RDS
Q31
No
USB
GT540 Optimus
microUSB
Q31
microUSB 2.0
NFC
GT540 Optimus
-
Q31
No
Sensors
GT540 Optimus
Accelerometer
Q31
Accelerometer
Browser
GT540 Optimus
HTML
Q31
-
Other
GT540 Optimus
MP4/DivX/Xvid/H.264/WMV player MP3/WAV/WMA/eAAC+ player Organizer Document viewer Voice memo Predictive text input
Q31
-
Type
GT540 Optimus
Removable Li-Ion 1500 mAh battery
Q31
Li-Ion 3000 mAh
Stand-by
GT540 Optimus
Up to 500 h (2G) / Up to 500 h (3G)
Q31
-
Talk time
GT540 Optimus
Up to 5 h 30 min (2G) / Up to 7 h 20 min (3G)
Q31
-
Colors
GT540 Optimus
Black, White, Pink
Q31
Silver
Models
GT540 Optimus
T540
Q31
LM-Q310N
SAR
GT540 Optimus
0.93 W/kg (head) 0.63 W/kg (body)
Q31
-
Price
GT540 Optimus
About 70 EUR
Q31
About 150 EUR