Screen size
A40Winner: 4.0"+40%
C66+2.4"
Quick verdict
A40 leads the measured specs 7-2.
Measured wins
A40
7
spec wins
Overall winner
Ties
6
equal specs
C66+
2
spec wins
Screen size
Technology
A40
GSM
C66+
GSM
2G bands
A40
GSM 900 / 1800 - SIM 1 & SIM 2
C66+
GSM 900 / 1800 - SIM 1 & SIM 2
GPRS
A40
Yes
C66+
No
EDGE
A40
Yes
C66+
No
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Announced
A40
2014, January. Released 2014, January
C66+
2014
Status
A40
Discontinued
C66+
Discontinued
Dimensions
A40
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in)
C66+
116.9 x 49 x 10.5 mm (4.60 x 1.93 x 0.41 in)
Weight
A40
126.5 (4.44 oz)
C66+
90 g (3.17 oz)
SIM
A40
Dual SIM
C66+
Dual SIM
Other
A40
-
C66+
Flashlight
Type
A40
TFT
C66+
TFT
Size
A40
4.0 inches, 45.5 cm2 (~56.4% screen-to-body ratio)
C66+
2.4 inches, 17.8 cm2 (~31.1% screen-to-body ratio)
Resolution
A40
480 x 800 pixels, 5:3 ratio (~233 ppi density)
C66+
240 x 320 pixels, 4:3 ratio (~167 ppi density)
OS
A40
Android 4.2.2 (Jelly Bean)
C66+
-
CPU
A40
Dual-core 1.3 GHz
C66+
-
Card slot
A40
microSDHC (dedicated slot)
C66+
microSDHC
Internal
A40
4GB 512MB RAM
C66+
-
Phonebook
A40
-
C66+
Yes
Call records
A40
-
C66+
Yes
Single
A40
5 MP
C66+
Yes
Video
A40
Yes
C66+
Yes
Single
A40
VGA
C66+
-
Video
A40
C66+
-
Other
A40
-
C66+
No
Loudspeaker
A40
Yes
C66+
Yes
3.5mm jack
A40
Yes
C66+
Yes
WLAN
A40
Wi-Fi 802.11 b/g/n, hotspot
C66+
No
Bluetooth
A40
2.0
C66+
2.0
Positioning
A40
GPS
C66+
No
NFC
A40
No
C66+
No
Radio
A40
FM radio
C66+
FM radio
USB
A40
microUSB 2.0
C66+
microUSB
Sensors
A40
Accelerometer, proximity
C66+
Messaging
A40
-
C66+
SMS
Games
A40
-
C66+
Yes
Java
A40
-
C66+
No
Other
A40
-
C66+
Audio/video player
Type
A40
Li-Ion 1500 mAh battery
C66+
Li-Ion 1500 mAh, removable
Colors
A40
White, Yellow, Blue
C66+
Black
SAR EU
A40
-
C66+
0.57 W/kg (head) 0.47 W/kg (body)