Samsung (SGH)

E250 - Use the Samsung E250 version or the E370’s version.
BlackJack i600 - Needs a Java emulator, read here for help.

Sony Ericsson (SE)

W710 W710i - Use the K750 or K750i version.

Nokia

7250 7250i
3220 - See mxit.defza.com/faqs/#Nokia for more info.