Is it worth it to develop WAP webpage for cellular since now cellular have browser that is really better than before?
I have a PHP website and I would like to increase the use of portable device to use it. Is it worth it to implement.
Frankly, no. I've written WAP pages (it's painful), I've never seen a person use a WAP browser, and for the 4.25 people in the world who do, there are WAP Gateways.
Unless your site is geared towards providing WAP friendly content (e.g. bitesize) that people will reload regularly, it's probably more cost effective to provide a static page with a phone number users can call so that you'll read them the content they want, than spend any time on WAP.