I want to make my universal app has different display name between iPad and iPhone, iPhone shows A and iPad shows B Is there a possible way to do without split into 2 app?
Simple Answer : You can't.
If you are making an universal app. App store will have just one app for both iPhone and iPad.
If you want two different names, you can make two apps and upload them independently. One is for iPhone and another is for iPad.
Hope this will help you.
Regards.