Having read the reviews, I think a lot of people have misunderstood the Flight Pouch. It's like an oversized travel wallet, that will also hold your phone, but with lots of verstatile ways to carry it...without straps, "sling" like, or with a secure wristlet strap.
When travelling alone, I don't like to leave my valuables in my aircraft seat when visiting the bathroom, so this is the perfect size to take with you. It's not bulky and you could wear/hide it under a jacket. ...and always have your important documents, credit cards, money and phone next to you.
You can easily fit an Alpaka Zip Pouch inside to help organise small bits and pieces or money.
So, for phone, passport, important docs, money and credit cards...it's perfect.
Plus, I love the look of it...very simple and stylish. Great value, considering you get a detachable long strap and the wristlet strap.