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I have already tried to do it using the following code:
NSURL *phoneURL = [[NSURL alloc] initWithString:@"tel:**21*<destination_number>#"];
[[UIApplication sharedApplication] openURL:phoneURL];
but it doesn’t work and sometimes the app crashs.
It works for me using a normal number (like 19765432221)…
Anybody?
Thanks!
I’m not sure what *21# means, but if it doesn’t work the way you’re doing it, it’s most certainly because Apple doesn’t allow it. There’s no other (public) API method for doing this kind of thing.