在订单界面，具体的打开方法为：

1、在手机上找到手机淘宝应用程序，并点击打开。

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2、点击我的界面，找到查看全部订单选项，并点击进入。

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3、在打开的全部订单界面中选择需要退款的交易订单。

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4、在跳转的交易管理界面中即可查找到退换选项。

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