Multi tier mobile device support

Question

Trying to research the most effective way to create a mobile webapp that would support all levels of devices:

dumbest feature phones with WAP and xHTML support

Blackberries/Windows Phone/Touch "dumb" phones

Droid/iOS

Obviously there should be progressive enhancement but I am completely open to just have different logic for each device tier. What is your opinion for how to best approach this? Open to any technologies. Thanks in advance.

Answer 1

Most phones support J2ME , even older phones. But you would not be able to use all phone services in the app. However, it would be better than website browsing ...