[Q] Android internal storage size
I have a Sony Xperia Z Ultra device and officially it has 16GB of internal storage. But when I go to Settings-> Storage I see that total space is only 11.79 GB. Obviously the rest is reserved for the system.
So the question is: does the system really need so much? I'm using a very compact SlimKat ROM, so I doubt it does
Is there any way to repartition device somehow and make more storage available to the user and less for the system? Or there are reasons why it's impossible even when using custom ROM?
I know there are some tricks to make the device treat the external SD card as internal memory but that's not what I'm looking for now
P. S. I tried to google, but I couldn't find any relevant info