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8
Get started
Low battery indicator
When the battery is low:
• a warning tone sounds,
• the battery low message displays, and
• the empty battery icon [
] blinks.
If the battery level becomes too low, the phone
automatically turns off. Recharge your battery.
Power on or off
Remove the adapter from the phone.
7
Power on
Do not turn on
the phone when
mobile phone
use is prohibited.
1. Open the phone.
2. Press and hold [
] to turn
on the phone.
3. If necessary, enter the PIN and
press <
OK
>.
Power off
1. Open the phone.
2. Press and hold [
].
Summary of Contents for SGH-X640
Page 2: ...SGH X640 User s guide...
Page 87: ......