I don’t have a junk folder on iPhone 12 mini

Hello 2652Johnjuan,

Thank you for reaching out in Apple Support Communities. We recommend to edit the list of mailboxes, such as the folder for Junk in the Mail app. Here's how:

"Organize your mail with mailboxes

You can choose which mailboxes to view, reorder your mailboxes, create new ones, or rename or delete mailboxes. (Some mailboxes can’t be changed.)

To organize your mailboxes, tap  in the upper-left corner, tap Edit, then do any of the following:

• View mailboxes: Select the checkboxes next to the mailboxes you want to include in the mailboxes list."

That information is outlined in this helpful article: Organize email in Mail on iPhone

Please let us know if that helps.

Kind regards.