Globalnet IMAP on iphone

[#1]

My email address is @globalnet.co.uk  At the moment my emails come into every device I have whether read or unread.  I'm told if you use IMAP it works like Microsoft Exchange which we have at work so when an email is read or deleted it syncs with the other devices.  The only settings I can find online for IMAP say it's mail.globalnet.co.uk and smtp.globalnet.co.uk but that doesn't work.  Plus where on an iphone do you choose IMAP over POP?  My iphone provider is vodafone.

[#2]

The server address is mail.globalnet.co.uk. You'll need to use your full email address as the username.

[#3]

Just a check, have you set up an IMAP "account" within your e-mail client (Outlook, thunderbird, pegasus mail etc) on you PC or Mobile - you can run that in parallel with POP3 access while you test it out, but the POP3 "account" will/may download and "delete from server" any e-mails accessed?
Also, IMAP doesn't "sync" as such, all e-mails are retained on the server and the content downloaded for display then the display copy is deleted by the client when the window is closed. Obviously, you can copy or move e-mails to a local folder in the client, just like POP3