No need for unlocking/rooting device to backup your apps and data apps,
you have a Nexus device sir.
it is good to learn something
do it with adb commands.
be sure that you have adb file installed (you can install android sdk)
connect your phone to pc with "android debug" enabled in developer options
open a cmd line where adb file is present and type:
Code:
adb devicesadb backup -apk -noshared -all -nosystem
accept backup within your device screen
this will backup your apps and their data to the pc (a "backup.ab" file is created)
to restore, connect your device with adb debug enabled, open cmd line where "backup.ab" file is located and type:
Code:
adb devicesadb restore backup.ab
accept restore process within your device screen
to backup your internal sd card, type:
Code:
adb devicesadb pull /sdcard/ /sdcard/
to restore:
Code:
adb devicesadb push sdcard /sdcard/