Why does OPPO mobile phone automatically empty SMS?

I think the mobile phone housekeeper blocked it.

Method for restoring deleted SMS:

1. Open the phone settings and enter the cloud service option.

2. In the cloud service interface, we found short messages, and important short messages can be uploaded to the cloud for storage, which is specially used to recover short messages.

3. In the SMS recovery interface, we select the option of restoring to the mobile phone, and we can restore the SMS saved in the cloud to the mobile phone in the networked state.

4. Of course, in addition to recovering the deleted content in the mobile cloud, we can also use the recovery software in the computer to achieve this operation.

5. To do this, we need to turn on the "USB debugging" switch of the mobile phone first.

6. Next, connect the mobile phone to be restored to the computer, and install and run the third-party Android mobile phone data recovery tool. After successfully identifying the mobile phone, click the Next button.

7. Next, the "Scan Mode" interface will be displayed, where you can directly click the "Quick Scan" option, so that you can quickly restore the mobile phone contacts, call records, text messages and other contents.

8. After the whole scanning operation is completed, switch to the "SMS" tab, check the SMS record information you want to restore, and click the "Restore Selected" button to retrieve the SMS record deleted by mistake.