The problem is you have the question and answers (or partial answers) scattered across multiple forums. I face this problem all the time with the PhoneGap forums.
As you answered, the issue really wasn't with Ionic, but probably a missing plugin, which points to the Cordova layer and not the Ionic directly. Hence why I think it should be redirected.
Also I think if you have trouble with a tutorial, that is where you should begin your questioning. Talk to the author of the post, they should know the material best and hopefully be able to answer the issue (or refine the tutorial). Plus, Nic usually does a really nice job with his tutorials.