Caterpillar B15 SIM Card Replacement

Place the phone screen-side down and place thumb on the yellow and black switch. Slide the switch to the right to unlock the back covering for removal.

Remove the back covering by gently lifting upwards from the bottom of the back covering. The back will snap off and the battery is exposed.

Place index finger at the top edge of the battery and gently lift upwards. The battery will slide cleanly out of the phone. The SIM card slot lies under the battery.

The old SIM card is removed and replaced with the new one. The phone can be reassembled by following these steps in reverse order.