Samsung SM-N950W User Manual page 25

Basics
Correct card installation
Use only a nano-SIM card.
Removing the SIM or USIM card
1
Insert the ejection pin into the hole on the tray to loosen the tray.
2
Pull out the tray gently from the tray slot.
3
Remove the SIM or USIM card.
4
Insert the tray back into the tray slot.
Nano-SIM card
25
microSD card