The proliferation of cell phones and "smartphones" is mind-boggling. It’s hard to find one solution for so many options, but the eCaddy Deluxe Universal Phone Mount is as close as it gets. It works with iPhone, Android, Evo, HTC, Samsung almost any phone, along with iPod/MP3 players. The eCaddy Deluxe Universal Kit includes a base bracket with Ultra Security feature so it will never bounce out and a cradle that clamps tightly around any phone (available in two sizes). Choose the UltraTilt option and you’ve got complete angle-ability. Interchangable parts design means your customers won’t have to purchase an entire new kit if they get a new gadget.
For more information, start with Leader’s Cell Phone Mounting Guide.