vCard

http://zh.wikipedia.org/wiki/VCard

示例代码：

- (NSString *)getVCardString {
  UserInfo *userInfo = [PublicInfomation getUserInfo];
  NSString *vCardString = [NSString
      stringWithFormat:
          @"BEGIN:VCARD VERSION:3.0 FN:%@ TEL:%@ ORG:%@ TITLE:%@ END:VCARD",
          userInfo.fullName, userInfo.mobilePhone, userInfo.company,
          userInfo.title];
  return vCardString;
}