Attempting to transfer files from your iPhone to a Windows PC, the true problem comes. Even after connecting with a USB cable, a few files occasionally fail to appear on PC. Here are 8 best solution.
UNLOCK IPHONE BEFORE CONNECTING IT TO THE PC
Also use USB CABLE WITH SUPPORT FOR DATA TRANSFER
BEST WAY TO USE ITUNES TO TRANSFER FILES
ENABLE THE ‘KEEP ORIGINALS’ TOGGLE IN SETTINGS
USE A WIRELESS METHOD TO TRANSFER FILES
make sure you are using the original Apple USB cable
try to reinstall or update the Apple Mobile Device USB driver