iphone - How to upgrade your project for ios 3.0 to ios 6.0 onwords -

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right working on non-arc project ios3.0. haven't designed interface builder. coded both landscape view , portrait view separately. problem when try add same image background of screen, appears cropped. enabling auto resize subviews gives me error. when try set views portrait , landscape view, doesn't work.

one more thing, project developed ipad. if want done iphones, should have start scratch separately iphone because of above mentioned problems ?

please suggest me if upgraded app support 64 bit ipad retina.

thanx in advance

make project universal changing setting shown in image below. better drop support ios 3 nobody uses anymore , support ios 6 , above. give more options , flexibility regarding frameworks , layouts.

to support 64-bit devices have build ios 5 or higher minimum supported ios version. best practice support 2 latest releases (ios 6 , 7 @ moment) ios users update devices fast after each os release.

enter image description here


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