@ kevpuk - rooting is easy enough via chainfire, but you'll trip KNOX and void warranty. If your on old firmware there is a workaround.
Ah, I saw KNOX in the pile of -ware on the phone.....haven't done anything with it - when I tapped the shortcut, it offers the chance to install and I haven't yet......
Haven't read up on what it is/whether worth installing yet - new to Samsung handsets
