the reason why Globe and Smart wont join the unlimited 24/7 fray is bcoz they want to provide quality service to its subscriber..they know that their facility can't handle all the incoming traffic when all of their subscriber goes unlimited..
it's a very nice initiative for SUN to offer such service to it's subscriber but they should improve their facilities first before introducing it to the public.
i come to think that SUN only made a MARKETING gimmick offering a 24/7 unlimited calls to rival their bigger competitors SANS good customer service..