I have used Samsung Galaxy Phone for past one year.Before the two month Samsung phone was Damaged Totally. Due to Damage immediately I need one additional phone.At that time, Financial status is very poor.So only I need most economic phone.so I chose Karbonn K450. Price is around 1400.I purchased Karbonn K450 mobile through amazon.First 20 days, it worked properly, after that My mobile is not detecting network signal, its show no service.But When I Kept same sim in another mobile its working with Full Signal.Sound Quality is so Bad and blur that you can’t listen.Nothing is good in the phone.Battery also very worst Quality.I should charge it five times.Simply I suggest, Noone Should Purchase this mobile.Because Its not worth.Really am very disappointed.Total amount was waste.