Input.gyro.enabled = true never work

I have tested it nearly whole day on my iphone6, Anyone who have experience of Input.gyro.enabled = true; and Input.gyro.attitude; Any idea?

Am I miss any target property on Xcode setting?

This is Interesting[80962-屏幕快照-2016-10-26-上午114002.png|80962]

Issue fixed after I update version to 5.5.0b9