I have a Rogers iPhone. I have to have my email set to fetch. I want push like blackberry. If I have MobileMe work? I'm trying to save on data. Instead of fetch every 15 minutes I would rather me email push when it arrives
I'm sorry if this seems obvious but in the Mail settings on your iPhone do you have Push turned on?
I can't say from experience because I don't use Yahoo but some people say that Yahoo's push is very unreliable. But that has nothing to do with the iPhone.