In my apps that use 3D touch home screen quick actions I do not have the new iOS 10 default sharing option that all apps got for free.
I have seen some apps, for example Amazon, that have their 4 custom shortcut items (quick actions) and the 1 default sharing option.
Is there a way I can get the default iOS 10 sharing option back?
That feature or option is only available for apps that are live on the App Store, it will not show up when testing your app. It is done automatically so there is nothing you will have to do.