2. In addition to this setting, we can also turn on "Reduce Transparency" in "Settings"-"Accessibility"-"Enhance Contrast" of the iPhone to improve the fluency of operation and alleviate the problem of frame dropping in the old iPhone.
Although the visual display effect is reduced after turning on this function, the mobile phone becomes smoother.
3. Turn off unnecessary advertisements, turn off location services or turn off unnecessary advertisement tracking in Settings-Privacy-Location Services.
4. Restart the phone correctly. In fact, Apple doesn't need to clean up the background. Applications in the background will not affect the speed of your mobile phone. This is just a shortcut to open the application. On the contrary, restarting the phone can give you a lot of space and clear the background program of the suspended animation application.