This is the stock rom for the S4 Google Edition phone that went on sale yesterday. It is blazing fast. My LTE even works better. I also have about a gig, I think, more free space than on Samsung's stock rom. If you want to try it, Download rom Download ktoonsez's kernel for TouchWiz Download SuperSu for rooting Put all 3 zip files on your sd card. If you don't have a nandroid backup already, make one first. Wipe everything (see this post if you have TWRP) Install the rom. Don't reboot Install the kernel. Install SuperSU. Wipe Cache and dalvik and reboot. Have fun.