如果微信密码忘了，即使手机号换了，只要记得以前绑定手机号或扣扣号就可以找回密码，具体步骤如下:
1、在微信登录界面点击“找回密码”。
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2、在找回密码的界面，点击“申诉找回帐号密码”。
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3、此时切换到“申诉找回帐号密码”界面中在同意的复选框打勾，依次点击“开始申诉”。
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4、切换到申诉找回账号密码界面中有两个选择。根据自己的记忆来选择。这里我们点击“我不记得微信号”这项。
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5、选择点击“我不记得微信号”后，下面就要填写之前的手机号或者QQ号信息，然后填写现在可用的手机号，最后点击"下一步“。
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6、这时需要现在用的手机号按要求编辑短信发送到微信运营商。发短信之后返回到”申诉找回微信帐号密码“界面中点击”我已发送短信，下一步“。
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7、此时申诉成功界面了，然后重新登录用申诉的密码登录，这时弹出弹出重新要设置密码。
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