Can the iPhone reach 10% of the world's 3G subscribers?  In a
previous article I asked what it would take for the iPhone to
reach 20% of the world’s smartphone market? (answer: 50%
growth).  Now I take a look at the whole market measuring three
underlying quantities:    1. the number of total wireless
subscribers world-wide   2. the number of 3G subscribers   3.
the number of smartphones sold every year 2007 to 2013  The
forecast for 2013 is:    1. total subs: 6.2 billion   2. total
3G subs: 2.4 billion (38% of all WW users)   3. 660 million
smartphones sold in 2013  I also computed the installed base of
iPhones based on units sold per year according to the following
schedule: 100% of iPhones in use during first year, 75% in use
after second year, 50% in use in the third year, 25% in the
fourth and 0% in the fifth and after.  If the iPhone can sustain
50% growth then the following are possible in 2013:    1. 4% of
world’s users using an iPhone (248 million iphone users)   2.
10% of 3G users are using the iPho