How can I make phone call in iOS?

Question

How can I make a phone call in Objective-C?

Answer 1

This is clipped from a project I did to do just that:

NSString *phoneStr = [NSString stringWithFormat:@"tel:%@",phone_number];
NSURL *phoneURL = [NSURL URLWithString:phoneStr];
[[UIApplication sharedApplication] openURL:phoneURL];