I'm trying to help my mother. We transferred photos via USB cord using File Explorer. Not all the photos on her Samsung Galaxy S7 phone showed in Explorer. For example, there were 16 photos she took on one day and only 9 showed in the phone's DCIM folder, yet we could see them on her phone. Several of the missing photos were taken within a few minutes of ones that did show in Explorer. I looked in both the camera and card folders.We finally sent the missing photos from her phone via email. I'm an Apple user and not sure how to fix this. My Mom is 80 years old and is anxious about not getting all her photos. Thanks!