The remaining memory is the data and cache generated during the use of the mobile phone. Here is an example of cleaning the data and cache of the browser. The specific method is as follows:

First, click "Settings" on the mobile phone desktop, as shown in the figure.

Second, select the "Safari" option in the center of the phone setting interface.

Third, then open "Clear History and Website Data" to enter, as shown in the figure.

4. Finally, click the "Clear History and Data" option, as shown in the figure.