打开京东官网，点击右手边登录账户，登录进去以后，点击我的，选择我的个人中心；
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2.点击设置，进入账号设置；
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3.再选择“账户安全”页面，点击账户安全；
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4.点击“手机验证”后面的“修改”按钮进行修改已经绑定的手机号，点击之后，有一个修改手机号码
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5.点击修改手机号码，通过认证魔方，选择合适的认证方式，就能修改手机号码了。
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