visual : Kingstar B21 Vs Symphony D23
Kingstar B21
Symphony D23
Software
browser
java
Hardware
Memory
General
32 Mb Flash + 32 Mb RAM
Slot
MicroSD card slot Expandable up to 8GB
MicroSD card slot Expandable up to 8GB
Camera
General
1.3 Megapixel || Video: Yes
Yes
Video
MP4
MP4, 3GP
Battery
Stand By
380 Hours
200 Hours
Talk Time
8 Hours
3.5 Hours
Design
Display
1.77 TFT QQVGA(128*160)
2.4" TFT QVGA(240*320)
Weight
Connectivity
USB
Yes
microUSB v2.0
bluetooth
Yes, v2.0
Yes
internet
WAP-2.0
GPRS
Others
General
Dual SIM Dual Standby, Bangla Support, 2000mAh Li-ion Battery, Top Torch Light, Games, Calculator. Auto Call Recording
Dual SIM Dual Standby, 1000 mAh Li-ion Battery, Audio, video & call recorder, Blacklist