Samsung SM-W2018 User Manual page 22

Basics
1
Insert the ejection pin into the hole on the tray to loosen the tray.
Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may
be damaged.
2
Pull out the tray gently from the tray slot.
When you remove the tray from the device, the mobile data connection will be
disabled.
22