Samsung SM-A520F/DS User Manual page 31

Basics
– Type 2 (SM-A520F, SM-A720F):
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.
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