Hello,
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 grasp
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 Software
Hope my words can help you out anyway.