操作方法如下：
操作工具：vivo X9
操作系统：Funtouch OS 7.127
软件：微信v8.2
1、首先打开手机微信，在个人中心页面里，如下图所示，点击“设置”。
2、点击进入到设置页面，在页面上找到“账号与安全”。
3、点击进入到账号与安全的设置页面，点击“手机号”。
4、进入到绑定手机号设置页面，然后点击“更换手机号”。
5、需要输入新的手机号码，然后点击右上角的下一步，如下图所示。
6、完成后就可以解除原来绑定的手机号。
登录微信在【我】-【设置】-【退出登录】-点击【忘记密码】，然后点击最底部【申诉找回微信账号密码】-【开始申诉】；
1、首先登陆微信，找到右下角我的设置，如下图所示；
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2、进入我的界面以后，选择设置功能，如下图所示；
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3、进入设置界面后点在选择账号与安全，如下图所示；
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4、在账号与安全界面，然后点击微信安全中心；
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5、然后进入微信安全中心后，点击找回账号密码；
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6、在找回账号密码界面点击申诉找回微信账号密码；
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7、然后进入申诉找回微信账号密码后，点击开始申诉；
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8、点击开始申诉进去以后点击我记得微信号；
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9、输入你的微信号，以及一个可用的手机号（可以发送信息的手机号）以及验证码，输入完后点击下一步；
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10、然后要求发送一条信息出去，发送完成后点击“我已发送，下一步”；
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11、最后界面出现申诉成功；
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12、申诉成功后，重新登录，登录成功后，再去看自己的账号信息，会发现除了微信号外，其余都解绑了。
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注意事项
如忘了之前手机所绑定的微信帐号导至无法绑定新的微信帐号，可以通过手机号找回旧微信帐号的密码（点击这里查看找回密码的方式），找回密码后，可以选择用手机号+微信密码的方式登录旧微信号进行解绑手机。
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