There are many Dual Sim phone and similarly there are many manufacturers claiming that their phone is the best. The phone made by Karbonn might not be the best but are not that bad. What makes a phone good or bad is not only its hardware but also software. In simple dual sim phones hardware is the main criteria though and software might not be that big a cause of concern.

Karbonn 409 is a DUAL SIM phone with very long battery life lasting almost 30 days at times. It has digital camera FM radio with recording. Supports all video and audio formats.

Karbonn 409 features
Up to 7.5hours Talk time
Up to 25 – 30days Standby Time
GPRS/WAP
Bluetooth / USB / PC Sync
2.4? Inch, TFT 262K Colors, 176 x 220 pixels Display Screen
Digital Camera
Wirelesss FM Radio With Recording
MultiFormat Audio Player supports MP3, MIDI, WAV, WMA, AMR
MultiFormat Video Player supports 3GP & MP4
Image Format supports JPG, BMP, GIF
64 Polyphonic RingTones
1800 mAH Li-ion Battery
Color Of Karbonn K409 is Red
Internal Memory: 64M ROM+ 32M RAM
Up to 8GB Expandable Memory
500 Phonebook Memory and memory of both the SIM Cards
SMS/MMS
500 SMS Memory and memory of both the SIM Cards
100 MMS Memory