Karbonn k9 is a featured basic mobile phone which is suitable for normal people who can settle in normal condition i.e. only for outgoing and incoming calls and not for internet use.
I am very happy, when I buyed this phone to gift my uncle.But later within a month I come to know the following drawbacks as
Buttons not working.
Charging downs automatically wirhout any use.
Mobile phone restart after pressing call button.
So, I taken to customer care, but care executive denies to work on button problem.
They told me that there is no warranty for repairing of buttons.
They give me phone with some troubleshoot but I face same problem later pn.