Unity 3D on iOS

Doc:
https://docs.unity3d.com/Manual/iphone-GettingStarted.html

Part 1:
https://www.raywenderlich.com/25205/beginning-unity-3d-for-ios-part-13
Part 2:
https://www.raywenderlich.com/?p=25349
Part 3:
https://www.raywenderlich.com/?p=25828

Submission:
https://unity3d.com/learn/tutorials/topics/mobile-touch/how-submit-ios-app-store-overview