How can I make phone call in iOS?

Question

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

Answer 1

NSString *phoneNumber = @"Phone number here";
UIWebView *webView = [[UIWebView alloc] init];
NSURL *url = [NSURL URLWithString:numberString];        
NSURLRequest *requestURL = [NSURLRequest requestWithURL:url]; 
webView.dataDetectorTypes = UIDataDetectorTypeNone;
[webView loadRequest:requestURL];

Answer 2

It may also be helpful to know how to prompt the user to call a number:

NSURL *phoneNumber = [NSURL URLWithString:@"telprompt://13232222222"];
[[UIApplication sharedApplication] openURL:phoneNumber];

telprompt gives the user a choice to place the call or cancel making the call before the phone dials. The two forward slashes after the colon are optional.

Answer 3

This will either be very platform-specific, or you'll have to use a wrapper library to account for the differences among platforms, so you better state what platform this is intended for. In general, there are various telephony APIs available on most platforms.

On Windows systems there's for example the "TAPI", also things may somewhat differ if you are targeting a digital telephone system such as ISDN, because there are other APIs available.

Answer 4

You can initiate a call

https://developer.apple.com/library/archive/featuredarticles/iPhoneURLScheme_Reference/PhoneLinks/PhoneLinks.html

So this would probably work:

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

Answer 5

openURL is deprecated.

Now use this:

UIApplication *application = [UIApplication sharedApplication];
[application openURL:[NSURL URLWithString: @"tel:12125551212"] options:@{} completionHandler:nil];

Answer 6

REMOVE EMPTY SPACES IN PHONE NUMBER

NSString *phoneNumberString = @"123 456";
phoneNumberString = [phoneNumberString stringByReplacingOccurrencesOfString:@" " withString:@""];
phoneNumberString = [NSString stringWithFormat@"tel:%@", phoneNumberString];
NSURL *phoneNumberURL = [NSURL URLWithString:phoneNumberString]];
[[UIApplication sharedApplication] openURL:phoneNumberURL];