Samsung B2100 - Manual (Page 23)

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2. Plug the large end of the travel adapter into a
power outlet.
3. When the battery is fully charged (the icon is
no longer moving), unplug the travel adapter from
the power outlet.
4. Unplug the travel adapter from the phone.
5. Close the cover to the multifunction jack.
Insert a memory card (optional)
To store additional multimedia files, you must insert a
memory card. Your phone accepts microSD™
memory cards up to 8 GB (depending on memory
card manufacturer and type).
1. Unscrew the lock and remove the battery cover.
2. Remove the battery.
3. Unlock the memory card cover.
Push the cover completely to secure the
multifunction jack. The multifunction jack must
be closed tightly to avoid water damage.
About the low battery indicator
When your battery is low, the phone will emit a
warning tone and a low battery message. The
battery icon will also be empty and blinking. If
the battery level becomes too low, the phone
will automatically power off. Recharge your
battery to continue using your phone.