In Xcode 4 iPhone Simulator not showing up

Till yesterday only I was able to test my applications both on iPhone simulator as well as iPad simulator. But now I can run the applic开发者_开发百科ation only on iPad simulator. It is working fine on iPad simulator. But if I select iPhone simulator and try to run the application, the iPhone simulator does not even show up. I am not able to understand the reason behind. I have checked all the settings repeatedly again and again.

Can please some one guide me in the right direction?

Make sure your project's Build Settings has iPhone/iPad selected for the Targeted Device Family setting under the Deployment section.

Here's what happened to me ... when I updated to the latest version of XCode (4.3.2) I didn't bother to uninstall the previous version. I mistakenly opened my iOS 5.1 targeted project in the older version of XCode that does not know about 5.1 and as a result the simulator was not available. So i would check for the following:

See which version of XCode you're currently running Try checking your iOS Deployment Target ... (Targets -> Deployment). If iOS 5.1 is selected change it to iOS 5.0 (the simulator will show up immediately)

Reference: Xcode 4 - IOS - Simulator not available as build target

change iOS Deployment Target as simulator iOS in build setting like simulator OS is 7.0 and iOS Deployment Target is 7.1 so simulator is not display