1、可以的，手机号注销了可以在微信上更换手机号码，首先要点击微信界面下的“我”。
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2、然后选择进入“设置”。
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3、点击“帐号与安全”。
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4、再点击“手机号”。
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5、选择“更换手机号”。
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6、填上新的手机号码，再点下一步。
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7、最后验证下收到的短信提交就可以了。
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注意事项：
绑定微信号的手机号码不用了，要尽快的更换绑定手机，不然之后换手机了，登录微信是需要验证绑定手机的，收不到验证码就没办法登录上去。