Screen size
A40Winner: 4.0"+13%
A9 Dual3.5"
Quick verdict
A40 leads the measured specs 7-2.
Measured wins
A40
7
spec wins
Overall winner
Ties
6
equal specs
A9 Dual
2
spec wins
Screen size
Technology
A40
GSM
A9 Dual
GSM
2G bands
A40
GSM 900 / 1800 - SIM 1 & SIM 2
A9 Dual
GSM 900 / 1800 - SIM 1 & SIM 2
GPRS
A40
Yes
A9 Dual
Yes
EDGE
A40
Yes
A9 Dual
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
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Yes
Announced
A40
2014, January. Released 2014, January
A9 Dual
2014
Status
A40
Discontinued
A9 Dual
Discontinued
Dimensions
A40
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in)
A9 Dual
120.5 x 63.9 x 10.6 mm (4.74 x 2.52 x 0.42 in)
Weight
A40
126.5 (4.44 oz)
A9 Dual
116 g (4.09 oz)
SIM
A40
Dual SIM
A9 Dual
Dual SIM
Type
A40
TFT
A9 Dual
TFT
Size
A40
4.0 inches, 45.5 cm2 (~56.4% screen-to-body ratio)
A9 Dual
3.5 inches, 36.5 cm2 (~47.4% screen-to-body ratio)
Resolution
A40
480 x 800 pixels, 5:3 ratio (~233 ppi density)
A9 Dual
320 x 480 pixels, 3:2 ratio (~165 ppi density)
OS
A40
Android 4.2.2 (Jelly Bean)
A9 Dual
Android 4.2.2 (Jelly Bean)
CPU
A40
Dual-core 1.3 GHz
A9 Dual
Dual-core 1.0 GHz
Card slot
A40
microSDHC (dedicated slot)
A9 Dual
microSDHC
Internal
A40
4GB 512MB RAM
A9 Dual
512MB 256MB RAM
Single
A40
5 MP
A9 Dual
2 MP
Video
A40
Yes
A9 Dual
Yes
Single
A40
VGA
A9 Dual
VGA
Video
A40
A9 Dual
Loudspeaker
A40
Yes
A9 Dual
Yes
3.5mm jack
A40
Yes
A9 Dual
Yes
WLAN
A40
Wi-Fi 802.11 b/g/n, hotspot
A9 Dual
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
A40
2.0
A9 Dual
2.0
Positioning
A40
GPS
A9 Dual
GPS
NFC
A40
No
A9 Dual
No
Radio
A40
FM radio
A9 Dual
FM radio
USB
A40
microUSB 2.0
A9 Dual
microUSB 2.0
Sensors
A40
Accelerometer, proximity
A9 Dual
Accelerometer
Type
A40
Li-Ion 1500 mAh battery
A9 Dual
Li-Ion 1350 mAh battery
Stand-by
A40
-
A9 Dual
Up to 240 h
Talk time
A40
-
A9 Dual
Up to 3 h 20 min
Colors
A40
White, Yellow, Blue
A9 Dual
White, Black
SAR EU
A40
-
A9 Dual
0.61 W/kg (head) 0.69 W/kg (body)