Screen size
K3Winner: 2.6"+7.7%
U562.4"
Quick verdict
K3 and U56 are close on the measured specs.
Measured wins
K3
3
spec wins
Ties
4
equal specs
U56
3
spec wins
Screen size
Technology
K3
GSM
U56
GSM
2G bands
K3
GSM 900 / 1800
U56
GSM 900 / 1800 - SIM 1, GSM 900 / 1800 - SIM 2
GPRS
K3
Class 10
U56
Class 10
EDGE
K3
No
U56
No
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
equal specsUSB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Announced
K3
2010. Released 2010
U56
2010. Released 2010
Status
K3
Discontinued
U56
Discontinued
Dimensions
K3
109 x 51 x 17.4 mm (4.29 x 2.01 x 0.69 in)
U56
115 x 49 x 11.5 mm (4.53 x 1.93 x 0.45 in)
Weight
K3
-
U56
-
SIM
K3
Dual SIM (Mini-SIM)
U56
Dual SIM (Mini-SIM, dual stand-by)
Type
K3
TFT, 65K colors
U56
TFT, 65K colors
Size
K3
2.6 inches, 19.2 cm2 (~34.6% screen-to-body ratio)
U56
2.4 inches, 17.8 cm2 (~31.7% screen-to-body ratio)
Resolution
K3
240 x 400 pixels, 5:3 ratio (~179 ppi density)
U56
240 x 320 pixels, 4:3 ratio (~167 ppi density)
Card slot
K3
microSD (dedicated slot)
U56
microSD (dedicated slot)
Phonebook
K3
Yes
U56
Yes
Call records
K3
Yes
U56
Yes
Single
K3
VGA
U56
1.3 MP
Video
K3
No
U56
No
Other
K3
No
U56
No
Loudspeaker
K3
Yes
U56
Yes
3.5mm jack
K3
No
U56
No
WLAN
K3
No
U56
No
Bluetooth
K3
2.0
U56
2.0
Positioning
K3
No
U56
No
Radio
K3
FM radio
U56
FM radio
USB
K3
No
U56
No
Sensors
K3
U56
Messaging
K3
SMS, MMS
U56
SMS, MMS
Browser
K3
WAP 2.0/xHTML
U56
WAP 2.0/xHTML
Games
K3
No
U56
No
Java
K3
Yes, MIDP 2.0
U56
Yes, MIDP 2.0
Other
K3
MP3/MP4 player Predictive text input
U56
MP3/MP4 player Predictive text input
Type
K3
Removable Li-Ion 1000 mAh battery
U56
Removable Li-Ion 1200 mAh battery
Colors
K3
White, Black
U56
Black