I actually got about 2.something. Nice catch.Hello,
When I was using 8.0.2 something that I hated was that it was using too much space even though I didn't have a lot of pictures or music 7.8gb now after I upgraded to 8.1 I got all that space back now I am using 3.3gb of space.
I'm already loving 8.1
Probably the update installed and freed itself from your phone.
I have 7GB available. Not bad. I use OneDrive for my photos and don't have much music on my 16GB iPhone 6.