HTC One M8 for Windows - Manual (Page 23)

3. Push the tip all the way into the hole until the card tray ejects.
4. Pull the card tray out.
5. Place the nano SIM card (contacts facing down) into the tray.
6. Insert the card tray back into the slot.
Removing a nano SIM card
Make sure to switch off HTC One before removing the card.
1. Hold the phone face up and the top panel facing you.
Unboxing 23