In-app billing v3 unable to query items without network connection or in airplane/flight mode

Question

Going through the v3 example file in modifying it with my project works fine. However my friend just tested the code by turning wi-fi off and turning on airplane mode. This

Answer 1

I think I may have found the answer. In following v3's TrivialDriveExample I was calling the queryInventoryAsync function in the mHelper.startSetup() function like so:

Log.d(TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(mGotInventoryListener);

Instead now I'm passing a String array list of my SKUs that I want to query for:

List skulist = new ArrayList();
skulist.add("my_sku_name1");
skulist.add("my_sku_name2");
mHelper.queryInventoryAsync(true, skulist, mGotInventoryListener);

I then tested by turning on flight mode and I was able to query my purchases fine!