vivoX9密保问题分为隐者薯私密保问题和锁屏密保问题，可以参考以下嫌嫌败方法解决：
vivoX9忘记隐私密码问题解决方法：进入手机设置--更多设置--恢复出厂设置--清除所有数据后重置密码（操作前请备份好手机中的重要数据）。
具体操作步骤：
1、待机桌面点击设置
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2、芹颤更多设置
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3、恢复出厂设置
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4、选择清除所有数据重置密码
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vivoX9忘记锁屏密保问题解决方法：携带身份证购机发票到我们的售后解密手机，vivo售后服务中心地址可以到vivo官网-服务网点查询-选择所在的省市查询即可。
具体操作步骤：
1、使用电脑浏览器搜索“www.vivo.com.cn”进入vivo官网
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2、点击“服务网点查询”
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3、选择所在的省市（如：广东深圳）查询即可
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