ios Calling is not available

Question

How do I know that I can not call from the device? For example for e-mail: [MFMailComposeViewController canSendMail] Anything for calling?

Answer 1

if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"tel:+123456"]]) {
...
}

Answer 2

This can be used for calling :

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:12125551212"]];

Please refer this link for more:

iPhoneURLScheme Reference