Board Thread:Questions and Answers/@comment-45.126.199.121-20160319074754/@comment-25669516-20160320143507

I'm afraid I can't say about iOS but for Android, if you have root, use Titanium Backup to make a copy of your data. If you are not rooted then you can try Helium backup and restore. It however requires you to have a PC/Laptop as well.