Download MobileTrans for ZUK Z1: http://www.android-data-recovery.org/phone-transfer
If you think that getting stuff from your iTunes backup to ZUK Z1 is difficult, think again. Cellular companies tend to only migrate contacts between phones and leave out the call logs, music, text messages, pictures, apps and the videos. Wondershare MobileTrans is a piece of software that will do all that for you.
Step by step video tutorial to restore photos/music/videos from iTunes backup to ZUK Z1 by MobileTrans is just for you.
Transfer more than just contacts: Copy over your text messages, apps, photos, call logs and music between iTunes backup and ZUK Z1 with a single click.
Migrate to multiple devices: Transfer any data you want shared between different devices such as Android, iOS and Symbian.