//1、调用 自带mail [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://163@163.com"]]; //2、调用 电话phone [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://13800138000"]]; //3、调用 SMS [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://13800138000"]]; //4、调用自带 浏览器 safari [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.baidu.com"]];