Apple has their own instructions for setting up Exchange email and calendar:
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In Finnish: https://support.apple.com/fi-fi/HT201729
Settings you will need:
Email: firstname.lastname@metropolia.fi (usually Firstname.Lastname@metropolia.fi, no special symbolsnordics)
Description: name of the mailbox in iPhone, like MP Firstname Lastname
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Password: password (password for your personal Metropolia user account)
Apple iPhone Exchange-asetukset