input file capture create a temporary image on IPhone Safari?

Question

on mobile, it fires mobile camera then take a picture.

then input=file has a the result of the file !

we can access like "input.files[0]"

so that file is 1) on memory ? or 2) temporary file in browser app ?

anyways, 1), or 2) is there a way to clean the memory or delete the temporary image file ?

I tried to set null values the FileReader or Form reset which is input contains