If you want to transfer any type of data like files, contacts, messages,videos and many more, then you can use Syncios Data Transfer. It is bi-directional which means transfer of files can be taken between these two phones.
If you want to know more detail then i am providing the link below.I hope it would help you.
http://www.syncios.com/android/transfer-data-from-iphone-to-vivo-v5.html
