recovery

Hello! I have encountered an unpleasant event. Accidentally formatted the memory card on my camera. And all my photos are gone. After a bit of google, I realised that you need special programs to recover photos. I even tried a few but didn't achieve the desired result .... Does anyone know how...

Have lost some photos on a Samsung Galaxy S5, running on internal memory. I used an Android undelete utility and it picked up lots of thumbnails from the deleted photos and other photos deleted previously. It also indicated it was unable to access internal memory and that a phone root would...