My brother bought Karbonn K9 Viraat 4G 2 months ago. This phone is not so good. Ram of this phone is too small of 8 GB. But application’s storage is only 4GB and storage capacity 4GB. Some small size apps intalled only. Camera is too bad. Battery back up is too bad. This smartphone does not regular use. My Brother 2 big games are installed and the notification comes storage capacity running out. I review on this phone is worse. Only Karbonn K9’s display is too big. Not so clear HD but average.