iPhone 3GS UI Element Size

Element	Size (in Pixels)
Window (include status bar)	320 x 480
Status Bar (How to hide the status bar)	20
View inside window (visible status bar)	320 x 460
Navigation Bar	44
Navigation Image / Toolbar Image	up to 20 x 20 (transparent PNG)
Tab Bar	49
Tab Bar Icon	up to 30 x 30 (transparent PNG)
Text Field	31
Height of a view inside a navigation bar	416
Height of a view inside a tab bar	411
Height of a view inside a navbar and a tab bar	367
Portait Keyboard height	216
Landscape Keyboard height	140

 

 

출처 : http://www.idev101.com/code/User_Interface/sizes.html