I don't understand how app developers retain compatibly with versions of iOS as early as 2.0. There are still apps on the app store than require 2.0. Open only allows a minimum deployment target of 4.3 now. How do app developers do this?
The pull down list for Deployment Target has a minimum of 4.3 but you can type in a lower number.
If you mean for the store, current tools limit minimum support to 4.3.
Other iOSs make up such small %, that it doesn't pay to support them. Put your energies into current tools, releases, etc.
When you are doing a project in the XCode, in IOS application target, you find: deployment target, there you can select the version of IOS that you are interested in. The minimum is 4.3.
How do app developers keep compatibility with old versions of iOS?
