I have three email addresses on my phone and Microsoft Outlook 2016 on my PC doesn't do a good job of syncing updated and new Contacts to my phone for some of the accounts. So I sometimes will email a new contact to myself from my PC to my phone with the intention of opening the Contact attached to the email and saving it on my iPhone 5 (with the latest OS, whatever it is) as a new contact on my phone.
But when I open the email on my iPhone, before my eyes, in about two seconds, the attached contact is converted to an Evernote something (contact? note?), and I can't open it to save it to