Apple's largest iPhone producer has reportedly ordered hundreds of its India-based Chinese workers to return to their native China but for unspecified reasons.

Apple is one of those companies, having started shifting part of its iPhone production to India four years ago. However, Foxconn, the company that makes most of Apple's devices, has done something that may put this diversification strategy in peril,

Chinese workers have left already, mostly support staff from Taiwan remain in India, says report. Move began about two months ago, not expressly clear why