With my old Moto E2 I simply connected the phone to my Windows 10 PC and I could see the internal storage and the SD card. With this Moto E4 running Android 7.1 I can see the phone from my PC, but it shows that this folder is empty. I've looked through all the settings on my phone and don't see anything that would prevent or allow me to see files when connected to the PC. There are several YouTube videos addressing this issue but none of them has a solution that works.