speed up your smartphone without apps or root on all android versions from 4.0 to 8.1 Posted by admin February 15, 2018 Post Views: 2,357 speed up your smartphone without apps or root on all android versions from 4.0 to 8.1 1: enabled developer option 2: open the developer option 3: reduce the speed on the animation of the windows to x0.5 Advertisements Share this:FacebookXLike this:Like Loading...