ExTweaks app allows you to do it
If you want to squeeze your Galaxy S II even more, you could try this useful app that allows you to do a lot of nasty things to your device
A new app has been released for Android devices with the Siyah kernel (Like the Galaxy S II), this app called [b]ExTweaks[(b] allows you to perform a lot of tweaks like increasing (or decreasing) CPU and GPU speed, remove rooting, backup the file system and much more to achieve better performance including doubling the battery duration.
It is on the Google Play Market so if you want to test it, direct download link and more info are below.
APP STORE LINK: https://play.google.com/store/apps/d...n.extweaks.app
Our thanks to 'Kaos2K' for this news story!