Why does Apple tightly hold on to the development of iOS but outsources some of the design and all the manufacturing of iPhone handsets? Select the answers that apply and give justification for your choice.

A. Non critical parts of the value chain can be outsourced

B. Apple phone designs are defended through patents

C. Apple has tied up critical resources which make it difficult for other handset manufacturers to copy

D. The same manufacturers that make iPhones also make Android phones

E. Apple’s iOS is valuable, difficult to imitate, and has imperfect substitutes

F. Apple’s differentiation strategy doesn’t apply to handset manufacturing

G. Apple realizes that the technologies used to drive costs out of the manufacturing process are also available to Android handset makers