1. Disable automatic content download and update.
If your iPhone feels a little slow, it may be because the App Store automatically updates the App. Manual update is recommended. Update only when necessary! Go to Settings-iTunes Store and App Store, and disable automatic download updates!
In addition to disabling automatic updates, you can also disable automatic updates for some other applications.
2. Disable automatic background refresh
The application is automatically updated in the background to prevent you from missing new messages, but the corresponding resources need to be occupied by the system! Go to Settings-General-background application refresh and close.
3. Manually restart the iPhone at regular intervals
4. Timed memory cleaning
If the iPhone has not crashed, you can press the power button directly, but do not shut down. After the shutdown interface appears, press the Home key until you return to the main interface again. At this time, the memory is released!
5. Update as soon as possible!