If your Android tablet is Samsung tablet, try Samsung Smart Switch. If no, I think the easiest way is using mobile transfer software. Usually, such software can help us transfer data between Android phones from the comuter via USB cable or wifi connecting. Of course, if you can export data from your Android tablet, you can also import them to your Samsung A7 by using samsung mobile manager software. Just search the details online and choose the one you like better. Good luck to you.