To remove the battery cover, lift from the tab at the corner of the device.
To remove the battery, lift from the slot at the bottom of the battery.
To remove the SIM card, carefully slide it out of the slot.
To insert the SIM card, slide it into the slot as shown, ensuring the gold contacts are facing towards the device.
To reinsert the battery, place the top of the battery in the battery compartment, ensuring the gold contacts align with the battery terminals on the device.
Press the battery into place.
Reattach the battery cover, pressing around the edges to snap it into place.
The SIM card has been inserted or removed.