Screen size
equal specsA214.0"
A404.0"
Quick verdict
A21 and A40 are close on the measured specs.
Measured wins
A21
4
spec wins
Ties
8
equal specs
A40
4
spec wins
Screen size
equal specsTechnology
A21
GSM / HSPA
A40
GSM
2G bands
A21
GSM 900 / 1800 - SIM 1 & SIM 2
A40
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
A21
HSDPA 2100
A40
-
Speed
A21
HSPA
A40
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
-
GPRS
A21
-
A40
Yes
EDGE
A21
-
A40
Yes
Announced
A21
2014. Released 2014
A40
2014, January. Released 2014, January
Status
A21
Discontinued
A40
Discontinued
Dimensions
A21
124.8 x 66.1 x 10.8 mm (4.91 x 2.60 x 0.43 in)
A40
126.2 x 64 x 10.8 mm (4.97 x 2.52 x 0.43 in)
Weight
A21
115.3 g (4.06 oz)
A40
126.5 (4.44 oz)
SIM
A21
Dual SIM (Dual stand-by)
A40
Dual SIM
Type
A21
TFT
A40
TFT
Size
A21
4.0 inches, 47.6 cm2 (~57.8% screen-to-body ratio)
A40
4.0 inches, 45.5 cm2 (~56.4% screen-to-body ratio)
Resolution
A21
320 x 480 pixels, 3:2 ratio (~144 ppi density)
A40
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
A21
Android 4.2.2 (Jelly Bean)
A40
Android 4.2.2 (Jelly Bean)
Chipset
A21
Mediatek MT6582 (28 nm)
A40
-
CPU
A21
Quad-core 1.3 GHz Cortex-A7
A40
Dual-core 1.3 GHz
GPU
A21
Mali-400MP2
A40
-
Card slot
A21
microSDHC
A40
microSDHC (dedicated slot)
Internal
A21
512MB 256MB RAM
A40
4GB 512MB RAM
Single
A21
3.15 MP
A40
5 MP
Video
A21
Yes
A40
Yes
Single
A21
1.3 MP
A40
VGA
Video
A21
A40
Loudspeaker
A21
Yes
A40
Yes
3.5mm jack
A21
Yes
A40
Yes
WLAN
A21
Wi-Fi 802.11 b/g/n
A40
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
A21
4.0, A2DP
A40
2.0
Positioning
A21
No
A40
GPS
NFC
A21
No
A40
No
Radio
A21
FM radio
A40
FM radio
USB
A21
microUSB
A40
microUSB 2.0
Sensors
A21
Accelerometer
A40
Accelerometer, proximity
Type
A21
Li-Ion 1500 mAh battery
A40
Li-Ion 1500 mAh battery
Stand-by
A21
Up to 120 h (3G)
A40
-
Talk time
A21
Up to 8 h (3G)
A40
-
Colors
A21
Black, Blue, Red
A40
White, Yellow, Blue
SAR EU
A21
0.99 W/kg (head) 1.39 W/kg (body)
A40
-
Price
A21
About 60 EUR
A40
-