checking entitlements in iOS

You can check the entitlements needed by your app using the following command in Terminal. When you unzip your .ipa file, you will get the Payload folder. Navigate to the same directory the Payload folder is in before executing the command:
>codesign -d --entitlements :- "Payload/YourApp.app"

Then, you can check what entitlements are included in the provision with
>security cms -D -i "Payload/YourApp.app/embedded.mobileprovision"

This output can help show where the mismatch is.