Oppo multi-user, SMS prompt host is not authorized.

1. Click the Select Settings icon on the phone desktop; 2. You can see many setting options displayed on the mobile phone system setting page, and you can find more setting contents by sliding the page; 3. Select other setting options in this page; 4. At this time, open the settings page, from which you can see the relevant settings options, and click to select security and privacy; 5. Then you can see the unknown source option in the opened page; 6. At this time, you can see the prompt pop-up window on the mobile phone page, and click Allow.