Re: I seem to have lost all my photos from my S4mini would be gratful for some solutions
Welcome to Android Central! Were they saved to Internal Storage or the SD card? Use My Files to look in the /DCIM/Camera directory, either on Internal Storage or the SD card. Can you see the photo files there?
And do you know if they were saving to Internal Storage by default, or the SD card? If the latter, the card might be corrupt, and it would be advisable to use a different card.