Finally in iOS 10 you can delete some stock Apple apps that you may never use.
1. Locate the default app you want to delete from the iPhone or iPad
2. Tap and hold on the app icon to cause them to jiggle and make the (X) delete button appear, tap on that (X) to delete the default app
3. Confirm that you want to delete the app by choosing “Remove”
4. Repeat with other default apps you want to delete in iOS
Deleted default apps will disappear from the devices Home Screen and remain inaccessible to the device unless they are reinstalled again.
Some default apps can not be removed from iOS such as: Settings, Messages, Phone, Safari, Clock, Photos, Health, App Store, and Camera. If you don’t want those apps, you’ll need to hide (Tip 62) them in a folder or on another home screen.
Even after an app has been deleted it can be reinstalled again at anytime by going to the App Store, searching for the app in question, and choosing to re-download it again.