iOS make phone call

问题

I am able to make a phone call by using void CTCallDialWithID(NSString *numberToDial); but my goal is to not have any ui visible and somehow hide the call ui screen. Any ideas how this could be achieved?

This should work on Jailbreak devices!(I am not targeting non jailbreak devices)

来源：https://stackoverflow.com/questions/17441353/ios-make-phone-call