微信中通耐如讯录安全助手没有了是因为官方已经将此功能下线，现在需要专门下载QQ同步助手软件，使用方法如下：
1丶打开QQ同步助手，点击开始使用。
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2丶点击立即开启按钮。
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3丶勾选备份本机通讯录到云端，之信亩顷后点击下方的下一步按钮。
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4丶最后等待同步完成即可。
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