Smartphone Install Base

There's been a lot of buzz about Android's amazing growth in the last quarter. Assuming the vast majority of customers don't buy a new phone more often than every two years, the install base would reflect the sum of sales over the last 8 quarters.

Worldwide Smartphone Sales to End Users by OS 3Q08-2Q10 (Thousands of Units)

Symbian	166,463.3	46%
RIM	69,370.6	19%
iOS	50,791.9	14%
Windows Mobile	30,596.9	8%
Android	22,619.2	6%
Linux	17,440.4	5%
Other	5,699.6	2%

Note this doesn't include business sales, which would likely boost RIM a lot and iOS a little. Nor does this include devices other than phones, e.g. iPod touch and iPad.