how to read spam mail in iphone

in the window where you view the mailboxes, (the top level of reading mail), you will see the word Inboxes above the white area. This is normally where you read the mail from all your services. The little icon to the left of your services will be an inbox.

Scroll down until you see Accounts with another white area.

You will then see all your services listed again. Their icons will be different, and dependent on which services you use.

Now if you tap on one of those, you will see different "folders", Inbox, Trash, Drafts, Sent Mail, Spam, Junk, etc.

Each service that you use may have different choices of what is available. If there is Spam or Junk, try looking through those.