I am using intex mobiles.No problem yet I found in it except 1 problem that is a heating problem.almost all Intex phones have this heating issue.
Otherwise it is a nice phone, nice interface, nice look, nice colour everything is good, internet speed is also good, I m using this phone with a 3G network.
And it gives better speed comparing to all other smartphones.intex is an indian mobile brand so not need to worry it gives service center across all over india.so if you think to buy, just buy but you have to go with its heating issue.