因为手机没有开通支付宝读取通讯录的权限。开通方法如下：

1、以oppor11s为例，点击桌面上的设置。

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2、进入设置页面后，点击安全。

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3、在安全页面，点击应用权限。

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4、接下来，点击读取联系人。

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5、在随后出现的页面里，点击允许支付宝读取联系人即可。

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