Deferred rendering path still not working on IOS?How can it be supported?

Unity version is 5.3.2f, my test device is iphone6s & iphone6 Deferred shading path can work on my mac in UnityEditor, even the platform switch to ios. I'm sure I made OpenGL ES 2.0 Emulation disable. My camera and PlayerSetting Render Path had been set to Deferred.But when I build to iOS device it use forward rendering. I tried everything like this http://forum.unity3d.com/threads/deferred-shading-in-unity-5-personal.313494/ Does anyone have the idea how to make deferred rendering work on iOS device?