storage space not updating
tl;dr the storage space on my iphone 5s version iOS 8.1.3 is not updating and doesn't reflect actual storage space. How to solve it?
more details:
I'm on iOS 8.1.3 (i don't update on purpose cause i'm very tight on space).
I need to download an update for one of my apps but get 0 bytes available under storage in settings.
I have deleted multiple apps, pics etc, and I still get 0 bytes available after that.
This started Saturday. Before then i seemed to have nearly 900mb free (after i cleaned up a lot), but suddenly was back to 0.
Have now tested again deleting multiple items and the "available" doesn't shift from 0. It's been buggy before but now it simply doesn't even update.
I've tried rebooting and the available storage stays at 0.
how do i fix this bug? (btw i won't have space to update to the latest iOS so that is not an option for me).
thanks
iPhone 5s, iOS 8.1.3