Have you also entered your app name into the 'Name On Device' field in the General Settings? I'm pretty sure this is why you have no name on your device.
Restart your phone and see what it shows. Also go to app manager to uninstall it and see what name it shows there too.
and i cant change app package name too I keep name and package as i want and put in eclipse and export but it shows old name and default package
I got it i am using android and i have changed setting of ios not android so it was happening and it is fixed now thanks for giving time