Comment bigger display means a bigger... (Score 5, Interesting) 330
I tend to agree with John Gruber of Daring Fireball that all of these rumors of larger screen iPhones are just bullshit, except for one detail: a larger screen would mean a larger phone body, which would allow for a larger battery, and would give even longer battery life. Battery life is the name of the game in mobile devices, and the larger display would give Apple an opportunity to get an additional leg up on their competition. It would also be helpful to have more battery capacity if they were upgrading the iPhone to 4G, which seems to need a lot more power.
While I tend to find Gruber's arguments about maintaining the dimensions of the UI by maintaining the dimensions and resolution of the display convincing, the change in dimensions of the iPhone interface going from a 3.5" to a 4" screen doesn't seem to be much of a concern. The greater concern is that the 4" screen is too large for many people to comfortably access the full screen with their thumb while holding the phone in the same hand (though that could be alleviated by narrowing the bezel around the screen).
So, while I'd love to bet against the rumor mongers clamoring for a 4" display on the next iPhone, I think that it might actually happen. A 4G phone will need a bigger battery, and I think Apple would rather make the phone face larger, than make the phone thicker, and that make a 4" display an easy sell.