Casio DT-X450 Series User Manual page 30

Removal
1. Turn the terminal off (shutdown).
2. Remove the battery pack.
(Steps 5 and 6 in the battery pack replacement procedure on page 20)
3. Flip back the SIM card cover.
4. Pull the SIM card out of the card slot, as shown in the figure.
5. Close the SIM card cover.
6. Install the battery pack.
(Steps 2 and 3 in the battery pack installation procedure on page 19)
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