Will iPhone base SDK allow what iphones can run the app?

Question

I have been developing an iPhone app and now I am trying to build the binary.

I have noticed the base SDK is set to iPhone 4.0. Does this mean only iPhone 4.0 users can run the app?

I can change it to the lowest iPhone device 3.2, but how can I change the target so that I can test on the simulator in OS 3.2?

Answer 1

That's OS version, not hardware. You can adjust the deployment target and the base SDK to set up handling the differences between 3.x and 4.x APIs. A tutorial on how to do it is here: http://iphonedevelopertips.com/xcode/base-sdk-and-iphone-os-deployment-target-developing-apps-with-the-4-x-sdk-deploying-to-3-x-devices.html