Macro Photography From Your Pocket Camera 2

This is my own another macro photography that i pick up from my pocket camera digital samsung S630. The object that i captured is a data cable.
I use ISO 100, Diafragma F7.1 and apperture speed of 8 s. In this condition my be better if i increase the ISO maybe from 100 to 200/300 even 400. so in the higher ISO I can take picture with flash less.
Because I use the lower ISO, that cause I should work with slow speed. This will reduce the focus and maybe we need tripod to take that picture.