通讯录是用来进行联系人通讯信息记录的应用程序，在执行各项功能之前需要进行身份验证。用户经过验证后可以用浏览和查询的方式找到联系人的信息，并可对联系人的信息进行修改、删除。-Contacts Contacts is used for recording information communication application, before the implementation of the functions required for authentication. Users are authenticated can find contact information by browsing and searching the way to contacts and information to modify, delete.