Why doesn't iTunes backup every time I charge my iPhone? I read years ago when they introduced wireless syncing with iTunes, that they would backup my phone every time I would charge my phone wirelessly. I waited years and to this day this still doesn't work properly. It seems to want to backup randomly. I charge my phone every night, but my latest backup is always more than a week ago. 

How do I fix this?
It doesnt back up everytime you charge it. Wireless syncing just means you dont need the data transfer cable, that you can do it "over the air", so the week old back ups are the legit ones