Is this supposed to be clever, Mr Cool Factor?
I have owned countless mobile phones and have not had a problem connecting to my POP e-mail with any. Along comes the iPhone and it won't connect at all.
This is not and end user problem, it's a problem with the way the iPhone handles Mail.
No need to be so hostile.
PM me some info maybe I can help you out. I had problems with optonline, and I fixed it. I posted it to my blog, and have gotten quite a few hits off of it.
What I did was be sure my username and password were entered into the login fields (without the trailing @optonline.net). At home (or the office for that matter) I use optimum, and you do not log in, you must leave those fields blank for outgoing mails. On the iPhone, you must enter them in, and be sure for the outgoing SMTP to use password as authentication. I left SSL off, and use port 587. Then you can send off of any account you wish. Logging in is only necessary for retrieving.
As I said, if you tell me your service we can brainstorm it.