9.Slide the SIM slot tray (1) to the right to release it, lift the left side of the slot tray and swing it up and to the right (2), and then remove the SIM card (3).
10.Align the tabs on the compartment cover with the notches on the computer (1), and then rotate the cover downward until it snaps into place (2).
11.Replace the battery.
12.Reconnect external power.
13.Reconnect external devices.
14.Turn on the computer.
