Where is oppoa 1 1x one-button cleaning?

OPPO mobile phone system comes with a one-button cleaning function when it leaves the factory, which mainly cleans up the applications running in the background and releases the running space of the mobile phone, making it smoother to use.

Setting method:

Click the virtual button at the bottom of the screen or slide up to bring up the latest task, and then click "X" or "Clear" at the bottom to clear the background task with one key.