Actually my phone is k9+ and not k9. I bought the phone last week via flipkart & I’m really impressed with its features and performance. it has got a superb battery backup of 4 days with average use of music player & calling. it has great sound(thanks to SRS). Camera is ok with 1.3 mega pixels & flash. Screen resolution is good for viewing videos & photos. Nice video player with full screen option. 3.5 mm jack does the job, but the only thing I disliked is quality of headphones. they are average.
Anyway, it’s a best buy within 2000 bucks.