支付宝红包使用需在手机版支付宝设置修改支付顺序为花呗支付。
手机版支付宝花呗支付为第一选项设置步骤：
1、打开支付宝，在支付宝主页面右下角点击我的。
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2、在我的页面点击右上角设置。
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3、在设置页面点击选择支付设置。
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4、点击打开自定义扣款设置，点击向上向下按钮把花呗设置成第一选项。
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