A. 怎么改微信号
可以在微信设置里修改自己的微信账号，但是只有在之前未设置微信号的，可以更改一次。已经修改过的无法更改，只能修改昵称。
修改方法：
1.首先打开微信。
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2.点击页面右下角“我”。
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3.点击自己的“微信头像”。
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4.点击“微信号”。
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5.然后你就可以修改自己的微信号了。
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拓展资料：
微信号，是登录微信时使用的账号，可以通过手机网络免费发送语音短信、视频、图片和文字，可单聊及群聊。微信号是登录微信时使用的账号，支持6-20个字母、数字。
B. 怎么更改微信号
更改微信号需要登录自己的微信账号，然后进入个人中心，再点击微信号选项，在弹出的框中编辑新的微信号即可，其具体操作方法如下：
1、在手机中找到微信app，点击打开。
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2、找到右下角我的。
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3、然后在页面顶部点击自己的微信头像。
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4、进入个人信息后，在微信号后面有个小箭头，点击进入。
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5、这时候你就可以删除旧的微信号，填写新的微信号了。
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6、需要注意的是微信号要根据提示说明进行设置，完成后点击保存即可完成微信号的修改。
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注意事项：
1）修改的微信号必须全平台唯一，不能与个人微信号或其他公众平台设置微信号重复。
2）可以使用6~20个字母、数字、下划线和减号，必须以字母开头。
3）一个自然年（1月1日至12月31日）内允许修改1次，若该帐号之前未设置过微信号，此次设置后待下一自然年才能修改。