App Refresh in the Background Background App Refresh is a powerful setting that works in the background to update the content of your apps on a regular basis. This setting is in charge of making sure you can see the most recent posts and content as soon as you click on an app, even when you aren't using it.
Unfortunately, this setting causes your device to run slower because it is continuously retrieving data and using up your resources. Navigate to Settings > General > Background App Refresh to disable it.
Location-Based Services A setting called Location Services allows GPS to access your location and use it to deliver information such as weather reports and directions. Although this is a crucial setting, it also consumes a significant amount of resources and battery life.
Additionally, you don't have to enable this setting for every app you use. Manage each app's permissions by going to Settings > Privacy & Security > Location Services. In order to save battery life, you can select "While Using the App" rather than "Always."
Email Push A setting known as "push email" periodically scans your phone for new emails and sends them. You won't have to wait a second for email updates if you have this setting enabled, but the drawback is that it uses more CPU power and depletes your battery.
You can adjust the setting if you don't mind waiting a bit longer for new emails to appear. Either choose Fetch or change the schedule to a less frequent interval by going to Settings > Mail > Accounts > Fetch New Data.
Animations and Visual Effects App transition animations and movement on your lock screen are examples of visual effects and animations that improve your experience and make using your phone more enjoyable. However, they aren't improving the speed of your phone or your battery.
These effects drain battery life as well as CPU and GPU resources. To enable Reduce Motion, navigate to Settings > Accessibility > Motion. Although your phone might not appear as vibrant and stylish, it will be faster and more effective in exchange.