一

UIWebView*callWebView = [[UIWebViewalloc]init];

NSURL*telURL = [NSURLURLWithString:@"tel:10086"];

[callWebViewloadRequest:[NSURLRequestrequestWithURL:telURL]];

[self.viewaddSubview:callWebView];

二

NSString*allString = [NSStringstringWithFormat:@"tel:10086"];

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:allString]];