Push notifications are a great way to get updates from your favorite social media, news, and podcast apps. They provide you with quick bites of information on your lock screen to identify activity in your apps. Plus, if your iPhone has 3D Touch capabilities, you can often interact with these notifications right from your home screen.
However, if you have push notifications set up for every app on your iPhone, it will cause your device to slow down. To alter your push notification settings, go to:
Settings
Notifications
Then visit each app to alter your notification type, or turn them off completely, to help reduce strain on your iPhone’s processor and battery.