Apple iPhone Sales hit 1 billion but are there more risks than ever investing in Apple?

This week saw the world's largest company, Apple (NASDAQ: AAPL), achieve 1 billion sales of its iPhone. This is an incredible achievement on any metric. But has the company become a victim of its own success? While this historical performance is impressive, investors are wanting to see where the growth will come in the future, and that could be more of a challenge as the company grapples with delivering meaningful growth. It may not be a product, but Apple's service business which is the next growth stage. Is there more risk investing in Apple today than when Steve Jobs returned to lead the giant? http://andrewbaxter.com.au