What Does the Mobile Phone Value Chain Look Like?

I was wondering what the mobile phone value chain looked like as applications were added and network bandwidth increased.

In an attempt to find out, I drew a draft value chain diagram with the online charting tool Gliffy . Take a look at the chart below and send me corrections. (The original is here). The shuurl for this post is http://shuurl.com/Q1926

Small Diagram
Medium Diagram

Update 2 June 2009 
See also Movement to the Cloud