I was under the impression that after the update if I added a contact on my iPad for example it would go straight onto my iPhone over the air but this is not happening. Is it supposed to? ICloud is enabled in settings.

Also I'm having a problem with contacts. I noticed a lot of contacts were appearing twice. On looking into it, it seems I have two groups - yahoo and iCloud. I don't know how that happened. Which group should I be entering contacts into to make sure they get backed up? I'm really confused.

I would really appreciate some help.

Thank you