Yezz Classic C21 Handbuch Seite 65

2. Insert the SIM card.
Your phone has 2 SIM card slots to allow you use 2 SIM
cards and switch between them.
•
Place the SIM card in the phone with the gold-colored
contacts facing down.
•
Without inserting a SIM card, you can use your phone's
non-network services and some menus.