After experiencing the similar Samsung phone
deleted photo loss troubles, I had learned that you often could
retrieve lost android phone files and contacts from its inner used
memory card with phone data recovery freeware.
Honestly, I did have tried several ones and got
some successes last time, like:
Recuva – free and fast, but, many retrieved files
could not be used
iCare Data Recovery Free – completely free and
good to take most of my phone pictures and songs.
PhotoRec-free, but, not easy to understand and
And you’d better also go search some ones and see
which one of them was proper for your case.
And this article may help you anyway:
18 Top Tested Free Data Recovery
Hope my words can help you out