Hey,
I think you can use Android Recovery software. It can scan your Sony xperia phone and SD card deeply to find the lost files for you. You can recover deleted messages, photos, videos, contacts, call logs, music, books, Whatsapp messages/photos and other files from your Sony Xperia phone easily. Learn how to recover deleted photos from Sony Xperia

The first thing you need to do is stop or add new data to Sony in order to avoid the overwriting once the Sony data has been deleted ,then, with the Android assistant of data recovery tool, they can perform data recovery from device.you can retieve deleted Sony files back

Actually, the experience of data lossing is so similar with many Android users. So how to find an easy way to recover deleted data from android is very necessary. Well, you can try this amazing Android file recovery tool - android file recovery. With it, you can recover your deleted data effortlessly.

How to Recover Lost & Deleted Files from Your Sony Xperia SP
 

There are several ways that can help Sony users to recover lost or deleted data. I would suggest you to use Sony Data Recovery Tool to get back every erased data from Sony phones. It supports every Sony phones and no matter for whatever reasons your data are lost, this professional tool easily restores wiped away data.

Thanks for the information provided to this thread.