Why is my system data so high?

[AC Question]

My system data is too high

My system data is 4,20GB and I don't know how to delete it. I've seen more people with the same problem and even reset it to the factory definitions and it didn't disapear. I have an LG L90.
Thank you for the help.

 

[belodion]

My system data is too high

Welcome.

I'm not sure what you're referring to. Do you mean the gigabytes of memory used by the OS? That is inevitable.
Or are you referring to data use by a particular app?