Samsung Gem User Manual page 12

First, insert the top end of the battery (1), matching the
2.
gold contacts on the battery to those on the inside of the
phone. Press lightly on the bottom end of the battery (2)
down into the phone until it slips into place.
Align the cover (1) and press it firmly into place (2), being
3.
sure it snaps into place at the corners.
8
Remove the Battery
Turn off the phone (if on). (For more information, refer to
1.
"Turn Your Phone Off" on page 10.)
2. If needed, lay the phone face down. Then, press downward
on the battery cover (1) and slide it until you feel a stop,
then lift the cover away from the phone (2).