I want to restrict my app only for iPhone. I don\'t want my app is available for iPad.
YES, yes, you CAN, set the UIRequiredDeviceCapabilities stating that the app requires telephony. This means it will only work on an iPhone. Please read more about it from the Apple Documentation here -
UIRequiredDeviceCapabilities - setting conditions so app store knows which devices to allow installation on
Within this page, search for UIRequiredDeviceCapabilites and it will tell you more from there.
I hope this helps anyone with this issue