Oppo didn't back up the short message, and accidentally deleted it.

What you want to ask is what should oppo do if it accidentally deletes the short message and has no backup? Use the cloud service that comes with OPPO mobile phone or use data recovery software.

1, OPPO mobile phone has started the cloud service. Once the SMS is backed up, the deleted SMS can be restored through the cloud service. The specific steps are: open the settings of the mobile phone, click the cloud service, select the cloud backup, find the backup of the short message that needs to be restored, and restore the short message according to the instructions.

2, there is no backup, you can use some professional data recovery software, data frog Android recovery experts and so on. This kind of software can help scan the mobile phone, find and recover the deleted information.