Karbonn k9 was a smarphone with 5 screen . iam. Useing this mobile battery was good though it was 2300 mah . RAM WAS only 512 mb but till than my phone was working good as new . this mobile was best with its price in online market as rs 3200. Its was android 4.4.2 kitkat and with 3g support and the processor was 1.2 ghz dual core I love to used .whole day I was playing online games net etc but I need to charge only twice in a day , I like the way they design of the mobile , by looking at the mobile its like a high price phone , but its was a less price I love it