Will PokerTimer run on your phone? Look in the list below to find out, and please add some notes here if you have tested PokerTimer on a phone not in the list.
PokerTimer requires a Java enabled mobile phone (or PDA). Specifically it needs something called CLDC 1.1 and MIDP 2.0. Most phones released after 2005 should work (there is a big list here)
You can either transfer the application from a PC using Bluetooth or download it directly to the phone using the phone browser.
(this list is very incomplete, please feel free to add to it!)