I've seen these easy methods but which one is the safest? Which one do you guys use?
OneClickRoot = http://www.oneclickroot.com/phone/ho...ung-galaxy-s4/
KingoApp = http://www.kingoapp.com/
SRSRoot = http://www.srsroot.com/
Has anybody tried the CyanogenMod Installer? = http://beta.download.cyanogenmod.org/install
Also, do I need an unlocked phone to Root properly? I'm with T-Mobile in the UK.
Does Rooting wipe the memory on the phone? Do I need to backup first?