You can only import from Quizlet with the help of add-ons, which, unfortunately, is only present in the desktop version
-https://ankiweb.net/shared/info/1362209126
-https://ankiweb.net/shared/info/1374772155
If you are still unsure, you could try reviewing it via Ankiweb in your iPhone browser (Safari…), then if you wish to continue using anki, then consider using AnkiMobile
One of the reasons why Anki is popular is large amount of community driven add-ons and decks that can help in your studying