操作方法如下：
1、打開手機京東客戶端，點擊右下角“我的”，再點擊右上角“設置”。
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2、在設置菜單中選擇“賬戶與安全”。
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3、然後選擇“修改手機號碼”。
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4、然後進入認證魔法，選擇“手機號認證”。
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5、點擊“獲取驗證碼”，將手機收到的驗證碼輸入，點擊“下壹步”。
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6、還需要認證所綁定的銀行卡信息，選擇壹張綁定的銀行卡，輸入完整的銀行卡號和身份證號碼，然後點擊“下壹步”。
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7、最後輸入新的手機號碼，點擊“獲取驗證碼”，將手機收到的驗證碼輸入，點擊“提交”就綁定到了新的手機號碼。更改到了新的手機號碼，京東白條還款短信驗證也會發到新的手機號碼。
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