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Phone Care
Replacing the battery
If the battery becomes low, an alert appears on the screen. Before you
replace the battery, synchronize the phone with your computer to back up
the data. This helps prevent accidental data loss.
If the phone does not turn on when you press
, recharge the battery
immediately.
Before replacing the battery, turn the phone off. Never remove the battery
while the phone is on. To verify that the phone is off, use your stylus to
tap
. The words “Phone is OFF” appear on the screen.
Only remove the battery to replace it with another battery. Don’t leave the
battery out of the phone. For example, if your battery becomes drained
while you are traveling and you don’t have a second battery or a cable to
recharge it, it is better to leave the drained battery in the phone than to
remove it.
If the battery drains completely, the phone no longer operates. However,
there is enough residual energy in the battery to store your clock settings
and data for about two days.
A built-in backup battery maintains the clock settings and data for an
additional 45 minutes after the residual energy in the battery is depleted or
