My mobile phone is an OPPO mobile phone, and I have deleted many applications, but there is still insufficient space. What happened?

This is caused by insufficient storage space or program error.

First, the remaining available space is small, and the software that is not commonly used is uninstalled.

Second, clean up the garbage in the storage space. Take OPPO R9S mobile phone as an example. The specific method is as follows:

1. First click "Settings" on the phone desktop.

2. Then select "Other Settings" information in the settings interface.

3. Then open the "storage space" to enter, as shown in the figure.

4. Click the "File Cleaning" option after entering, as shown in the figure.

5. Finally, click "Clean", as shown in the figure.

Third, back up the data of the mobile phone, and then restore the mobile phone to the factory settings.

Fourth, take the mobile phone to the local OPPO customer service center for processing.