Screen size
equal specsA204.0"
A4034.0"
Quick verdict
A403 leads the measured specs 5-2.
Measured wins
A20
2
spec wins
Ties
9
equal specs
A403
5
spec wins
Overall winner
Screen size
equal specsTechnology
A20
GSM / HSPA
A403
GSM / HSPA
2G bands
A20
GSM 900 / 1800 - SIM 1 & SIM 2
A403
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
A20
HSDPA 2100
A403
HSDPA 2100
Speed
A20
Yes, 384 kbps
A403
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
equal specsCPU speed
RAM
Storage
Main camera
equal specsFront 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
HSPA
Announced
A20
2013, August. Released 2013, August
A403
2015, August. Released 2015, August
Status
A20
Discontinued
A403
Discontinued
Dimensions
A20
-
A403
125 x 65 x 10.2 mm (4.92 x 2.56 x 0.40 in)
Weight
A20
-
A403
113 g (3.99 oz)
SIM
A20
Dual SIM (Mini-SIM)
A403
Dual SIM
Type
A20
TFT
A403
TFT, 256K colors
Size
A20
4.0 inches, 45.5 cm2
A403
4.0 inches, 45.5 cm2 (~56.1% screen-to-body ratio)
Resolution
A20
480 x 800 pixels, 5:3 ratio (~233 ppi density)
A403
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
A20
Android 4.2.0 (Jelly Bean)
A403
Android 4.4.2 (KitKat)
CPU
A20
Dual-core 1.2 GHz
A403
1.0 GHz
Chipset
A20
-
A403
Spreadtrum SC7715
Card slot
A20
microSDHC (dedicated slot)
A403
microSDHC
Internal
A20
256MB 512MB RAM
A403
4GB 512MB RAM
Single
A20
3.15 MP
A403
3.15 MP
Video
A20
Yes
A403
Yes
Features
A20
-
A403
LED flash
Single
A20
VGA
A403
1.3 MP
Video
A20
A403
Loudspeaker
A20
Yes
A403
Yes
3.5mm jack
A20
Yes
A403
Yes
WLAN
A20
Wi-Fi 802.11 b/g/n
A403
Wi-Fi 802.11 b/g/n
Bluetooth
A20
Yes
A403
2.0
Positioning
A20
No
A403
A-GPS
NFC
A20
No
A403
No
USB
A20
microUSB 2.0
A403
microUSB 2.0
Radio
A20
-
A403
FM radio
Sensors
A20
Proximity, gyro
A403
Accelerometer
Type
A20
Li-Ion 1500 mAh battery
A403
Li-Ion 1400 mAh battery
Colors
A20
Black
A403
Black, Light Blue, Red, Yellow
SAR EU
A20
0.88 W/kg (head) 0.60 W/kg (body)
A403
0.38 W/kg (head) 0.68 W/kg (body)
Price
A20
About 60 EUR
A403
-