I have 228mb "mystery app" on my iPhone
In my usage, I see a "mystery app" with 228mb of space. I've rebooted my iPhone, synced with iTunes, and tried to "delete" the app from the Settings menu. Even after a restart, it reappears.
Looking through my apps, I don't see any that appear to be "hanging" from any updates. As I have a 16gb iPhone, I'd sure like this space back!
I am on an iPhone 6 with the latest iOS 9.2.1. Thanks!