My client asked me to get the review of the app on which I am working. So, I want to get the ipa file and mobile provision file from Xcode 4.2 to share my app to run in real
• Get their device ID and add their device to "Devices" in your iOS Provisioning Portal
Create or edit a distribution profile to include their device (wildcard app id or your app's app id)
• In Xcode: Product -> Archive
• In Xcode's Organizer: Go to archives and "Share" your archive. This creates an ipa that you can give to your client
• The client can install it in iTunes by adding the ipa and syncing apps (I haven't done this last step in a while)
OR
Get to know testflight. Using testflight will replace the final step above and streamline the installation process for your client.