I've been using an app called Send Anywhere to move video files from my windows pc to my iphone (when you do social media "professionally" Chrome uploads are less reliable and lower quality than phone ...
Backing up your iPhone to a USB drive is a great way to transfer files between devices and make sure your files are safe.
If you're trying to fix iTunes problems, iCloud storage restrictions, or a broken iPhone, you should back up your iPhone with DearMob iPhone Manager first in case you run into more problems. When ...