How do I delete pictures and videos from Gallery that were transferred from my old S3 to my new S7?

[AC Question]

The delete icon pops up and the delete function works for my old pictures and videos - they just don't delete from the phone. Every picture and video taken and stored after I purchased the S7 can be deleted. It's just the ones that were transferred to the new Galaxy S7 phone from my old S3 phone that won't delete. Thanks!

 

[ManiacJoe]

It could be a file or folder permissions problem.

Using a file browser app, try deleting the files using it and see what error message comes up.

 

[B. Diddy]

Are the photos that were copied over from the S3 saved to Internal Storage or the SD card?