We are going to issue version 4.0 of our iPhone app and recently there have been some complaints that the previous version is only available from iOS 4.1 Are available. Plus I know that to change this, I can set my deployment goal (Project> in Build) to iOS 3.1. However, I have run on an emulator and then on my iPhone (using iOS 4.2) on the app, but I am not able to test anything on the old because there is an iOS or 4.3 similar to everyone here. Can I safely assume that just by changing the deployment target and testing the app on subsequent models that apps run safely like 3.1
We are familiar with the reasons for upgrading the people of the old iPhones to iOS 4.0 and above, so we want to adjust them, but this does not mean that the app is useless and to test it There is no way.
For the problem you need to install older versions of xcode to support iOS 3.0 and you need it Because there are so many changes in OS 4.0 and above, to check whether it is working on the same or not, it is certain that the application will not work with the iOS 3.0, 3.1 available device and it Will crash.
Just install the old version of SDK and test on the simulator, if it works, then it is okay to separate the OS according to iOS version 3.0 and iOS version 4.0 and run the code accordingly.
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