1-) Copy SuperSu.zip in phone memory.
2-) Go to Settings >Security > Unknown sources make it open. Enable USB Debugging Just go to Settings > Developer Options > USB debugging make it on. (If developer options not found go to Settings > About phone and click Build number (7 times) This could activate Developer Options
3-) Install Root.apk Allow all messages.
4-) Install Recovery.apk
5-) Install Busybox.apk
6-) Open KingRoot and Tap Root button.
6-) Wait to complete. İf you see a chinese blue button just tap it. allow all the pop up messages.
7-) Wait till blue tick symbol into 100%.
😎 KingUser is now installed. Then Just ignore it.
9-) Open busybox and install it. When you see It looks like busybox installed successfully congratulations message.
10-) Open XZRecovery and click Install Recovery .
11-) Phone will be reboot and recovery will open.
12-) Tap Install > find SuperSU.zip in phone memory then tap and install it.
13-) Reboot your phone.
14-) You can see SuperSU in menu and check with rootchecker your root access.
15-) You are now rooted. Enjoy!.
16-) You can now uninstall KingRoot, busybox, Xzrecovery app.
NOTE: XPERİA Z2, Z3 and Z3C ANDROİD 5.0.2 (23.1.A.1.28) TESTED AND SUCCESSFULLY.
NOT COMPATİBLE WITH ANDROİD 5.1