icloud not backing up automatically

[Brohmer]

My iCloud is working, but I thought it would back up automatically when iPad 2 or iPhone was plugged in. I have to manually click to backup. Anyone have an idea why. I have the settings for iCloud all on and it works when I manually do it.

 

[Clinton]

I have the same problem. I've search the Internet but have yet to find a solution for this.