postpaid lang ang iPhone4 through Globe diba?
they usually have it also for prepaid.
bottomline, it is going to be sim-locked to Globe.
buti na lang right handed ako. 
lahat naman ng phone may mga bugs yan at may bug fixes naman pag nagkaroon ng firmware upgrade after ilang months. Mas grabe pa nga ang bugs ng Nokia up to nth time ng firmware upgrade may mga bugs pa din 
disadvantage ng Iphone na nakikita ko:
- 5.0 megapixel lang ang phone yung iba meron na up to 12 megapixel
- yung battery built in tapos yung battery life niya konti lang
- may mga features na wala sa Nokia like GPS, physical keyboard, etc.
i cant care less for only 5.0 megapixel as i dont use it as a camera. but what is more interesting is you can activate the camera to have a "live stream" of what you can see to the person on the other line.
according to the techspecs, the battery life is much longer this time around. it has improved. i have the 1st gen and it takes only around 2 days before the battery life expires. but the 3gs model takes around 4 days (assuming the usage level is the same)
GPS is not a problem. there are millions of APPS which can address this. google maps also help a lot - great news, there is already an available one for the Philippines (though mostly metro manila area only). For the physical keyboard, no need for that as it is a full-touch phone, and apple avoided this to keep the phone sleek and elegant at only 9mm thick!