Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
(maker)(series number)(additional specifications)
So SO902iWP+ is a sony, in the second 902 series(it goes 900,900i,901,901i,902,902i,etc) and is waterproof.
SO-Sony (NOT Sony Ericsson, which is sold outside the U.S. only)
SH-Sharp
N-NEC (currently the most popular phones due to the impression that they are easy to use)
P-Panasonic
T-Toshiba
F-Fujitsu
If anybody cares