ReferenceError: App is not defined in mobile-config.js

Hi guys, I am creating mobile-config.js following http://docs.meteor.com/api/mobile-config.html
But it’s saying ReferenceError: App is not defined
Any idea ?

I’m facing this problem too. @ducdev did you resolve your problem?

is the mobile-config.js file need to place same level with meteor project’s
-client
-server
-mobile-config.js

once I added this file, the console complain ReferenceError.

Please help