Screen size
A404.0"
C820Winner: 8.0"+50%
Quick verdict
C820 leads the measured specs 7-2.
Measured wins
A40
2
spec wins
Ties
6
equal specs
C820
7
spec wins
Overall winner
Screen size
Technology
A40
GSM
C820
GSM / HSPA
2G bands
A40
GSM 900 / 1800 - SIM 1 & SIM 2
C820
GSM 900 / 1800 - SIM 1 & SIM 2
GPRS
A40
Yes
C820
-
EDGE
A40
Yes
C820
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
-
3G bands
A40
-
C820
HSDPA 2100
Speed
A40
-
C820
HSPA
Announced
A40
2014, January. Released 2014, January
C820
2014
Status
A40
Discontinued
C820
Discontinued
Dimensions
A40
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in)
C820
210 x 131 x 10.5 mm (8.27 x 5.16 x 0.41 in)
Weight
A40
126.5 (4.44 oz)
C820
-
SIM
A40
Dual SIM
C820
Dual SIM
Type
A40
TFT
C820
TFT
Size
A40
4.0 inches, 45.5 cm2 (~56.4% screen-to-body ratio)
C820
8.0 inches, 185.6 cm2 (~67.5% screen-to-body ratio)
Resolution
A40
480 x 800 pixels, 5:3 ratio (~233 ppi density)
C820
800 x 1280 pixels, 16:10 ratio (~189 ppi density)
OS
A40
Android 4.2.2 (Jelly Bean)
C820
Android 4.2.2 (Jelly Bean)
CPU
A40
Dual-core 1.3 GHz
C820
Dual-core 1.0 GHz
Card slot
A40
microSDHC (dedicated slot)
C820
microSDHC
Internal
A40
4GB 512MB RAM
C820
4GB 512MB RAM
Single
A40
5 MP
C820
3.15 MP
Video
A40
Yes
C820
Yes
Single
A40
VGA
C820
1.3 MP
Video
A40
C820
Loudspeaker
A40
Yes
C820
Yes
3.5mm jack
A40
Yes
C820
Yes
WLAN
A40
Wi-Fi 802.11 b/g/n, hotspot
C820
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
A40
2.0
C820
2.1
Positioning
A40
GPS
C820
GPS
NFC
A40
No
C820
No
Radio
A40
FM radio
C820
FM radio
USB
A40
microUSB 2.0
C820
microUSB 2.0
Sensors
A40
Accelerometer, proximity
C820
Accelerometer
Type
A40
Li-Ion 1500 mAh battery
C820
Li-Ion 4000 mAh, non-removable
Stand-by
A40
-
C820
Up to 500 h
Talk time
A40
-
C820
Up to 14 h
Colors
A40
White, Yellow, Blue
C820
Black, Silver
SAR EU
A40
-
C820
0.41 W/kg (head) 0.53 W/kg (body)