Push notifications from apps is actually a fine thing. You will be notified in the form of a sound, lock screen notification, notifications or banners. Over time, these notifications can become quite annoying. Luckily, Apple has the ability to disable push notifications on iOS on its iPhone. We'll show you how it all works in this guide.
Enable Turn off notifications on iPhone
When you open an installed app for the first time, you will be asked if you want the app to notify you in the purchase. If you change your mind later, you can disable push notifications completely or only specific ones in the settings . E.g. WhatsApp or Mail App.
Tap Settings and then tap Notifications on your iPhone.

Scroll down and tap the apps that will stop notifying you in the future
Deactivate the notifications for the desired apps by sliding the slider to the left.

However, if you would like to receive push notifications from an app, you can specifically select individual notification variants for some apps. Available are sounds, notifications on lock screen , notifications, banners.

Here you can adapt the notifications under iPhone in the future or deactivate them completely.