支付宝绑定的手机号更换之后，可以在支付宝中绑定新的手机号。具体操作步骤如下：
工具/材料：可以接收短信的新手机号。
1、打开手机支付宝，点击右下角“我的”，如下图所示。
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2、点击“我的”界面中右上角的“设置”，如下图所示。
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https://iknow-pic.cdn.bcebos.com/500fd9f9d72a605991755aaf2634349b033bba1a"/>
3、进入设置后选择“安全设置”，如下图所示。
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https://iknow-pic.cdn.bcebos.com/d4628535e5dde7117d8df843a9efce1b9d16612c"/>
4、进入“安全设置”后选择“手机号”，如下图所示。
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https://iknow-pic.cdn.bcebos.com/d1a20cf431adcbefa139c5b3a2af2edda3cc9f72"/>
5、点击“更换手机号”，如下图所示。
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https://iknow-pic.cdn.bcebos.com/d62a6059252dd42a9e4aba1e0d3b5bb5c8eab8c0"/>
6、输入你要绑定的新手机号，然后点击“下一步”，如下图所示。
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https://iknow-pic.cdn.bcebos.com/242dd42a2834349bbbf6d530c7ea15ce37d3be97"/>
7、输入手机收到的验证码，验证完成后支付宝就成功绑定新手机号了，如下图所示。
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https://iknow-pic.cdn.bcebos.com/c2cec3fdfc039245e6b45bba8994a4c27d1e2505"/>