I can utilize only 7gb out 12.92 total space on my phone. can somebody help?

[AC Question]

Storage space in my nexus is 16GB, but some space is taken by OS. So eventually I am left with only 12.92 GB. I have updated my OS couple of times, and after each update the amount of 12.92 gb I can utilize reduces atleast by 1 GB.

 

[Golfdriver97]

Welcome to the forums. Have you tried clearing the system cache in recovery? What device do you have?