Just do the same as me, sell the phone and buy another brand like motorola or something like that.
But nobody wants a Z2, hard to sell as hell.
Or just do your research and don't get a locked device.
Did you search?
If your on lollipop and lazy then use kingroot,
If your on lollipop and not lazy then downgrade to kitkat and use the community root toolkit or Towelroot,
If your on kitkat then use the community root toolkit or Towelroot.
DO NOT USE THIS to try and disable the on screen navigation buttons. This is for disabling the hardware buttons.
Go to settings/ hybrid properties/ interface/ slide the Nav.bar to 10%
Sent from my Xperia S using xda app-developers app
but you not answering any of my question
and i did search
If you can't work the search, the guides to root might be too complicated.
Sent from my D6503 using Tapatalk
Did you search? And try this? http://forum.xda-developers.com/showthread.php?p=53220435