Screen size
A25Winner: 5.0"+48%
K4402.6"
Quick verdict
A25 leads the measured specs 8-2.
Measured wins
A25
8
spec wins
Overall winner
Ties
3
equal specs
K440
2
spec wins
Screen size
Technology
A25
GSM
K440
GSM
2G bands
A25
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
K440
GSM 900 / 1800 - SIM 1 & SIM 2
GPRS
A25
Yes
K440
Yes
EDGE
A25
Yes
K440
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
USB
5G support
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
No
Announced
A25
2013. Released 2013
K440
2012
Status
A25
Discontinued
K440
Discontinued
Dimensions
A25
146 x 78.6 x 10.5 mm (5.75 x 3.09 x 0.41 in)
K440
119.5 x 54 x 13.5 mm (4.70 x 2.13 x 0.53 in)
Weight
A25
150 g (5.29 oz)
K440
-
SIM
A25
Dual SIM
K440
Dual SIM (Mini-SIM)
Type
A25
TFT
K440
TFT, 256K colors
Size
A25
5.0 inches, 71.2 cm2 (~62.0% screen-to-body ratio)
K440
2.6 inches, 20.9 cm2 (~32.4% screen-to-body ratio)
Resolution
A25
480 x 800 pixels, 5:3 ratio (~187 ppi density)
K440
240 x 320 pixels, 4:3 ratio (~154 ppi density)
OS
A25
Android 4.0 (Ice Cream Sandwich)
K440
-
CPU
A25
Dual-core 1.0 GHz
K440
-
Card slot
A25
microSDHC (dedicated slot)
K440
microSDHC (dedicated slot)
Internal
A25
114MB
K440
-
Phonebook
A25
-
K440
1000 entries
Call records
A25
-
K440
Yes
Single
A25
5 MP
K440
1.3 MP
Features
A25
LED flash
K440
-
Video
A25
Yes
K440
Yes
Single
A25
Yes
K440
-
Video
A25
K440
-
Other
A25
-
K440
No
Loudspeaker
A25
Yes
K440
Yes
3.5mm jack
A25
Yes
K440
No
WLAN
A25
Wi-Fi 802.11 b/g/n
K440
No
Bluetooth
A25
Yes
K440
2.0
Positioning
A25
No
K440
No
NFC
A25
No
K440
No
Radio
A25
FM radio
K440
FM radio, recording
USB
A25
Proprietary
K440
microUSB
Sensors
A25
Accelerometer, proximity
K440
Messaging
A25
-
K440
SMS, MMS
Games
A25
-
K440
Yes
Java
A25
-
K440
Yes
Other
A25
-
K440
Audio/video player Photo viewer Organizer
Type
A25
Li-Ion 2000 mAh battery
K440
Li-Ion 2100 mAh battery
Stand-by
A25
Up to 300 h
K440
Up to 800 h
Talk time
A25
Up to 6 h
K440
Up to 12 h
Colors
A25
White/Black
K440
Black/White, Black/Red
SAR EU
A25
0.50 W/kg (head)
K440
-
Price
A25
About 80 EUR
K440
About 30 EUR