I want to know the answer to the following question:
Who defined a common External Power Supply for use with smartphones sold?
All the background I'm provided with is that "Apple, one of the original MoU signers, makes micro-USB adapters available – as permitted in the Common EPS MoU – for its iPhones equipped with Apple's proprietary 30-pin dock connector or (later)". Is that enough to answer the question?
Answer: no