The waiting line for immigration/customs is not the area I'm talking about, this area is where you go once you fail the initial screening. In some international airports like Sydney you will receive a $300 on the spot fine if you have your phone in your hand, they're serious about it.
Australia does have some outrageous laws, so I suppose they want you not to be destroying the things that are governed by those laws on your phone. But I'd rather take the fine than have them find out, if I had such things.
