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Charge power
PI3900B2/85 has a built-in battery that can be
charged through the USB connector of the
supplied USB power adapter.
7KH ÀUVW WLPH \RX XVH PI3900B2/85, charge
PI3900B2/85 for more than eight hours.
‡
By using the USB cable, connect
PI3900B2/85 to the supplied USB
power adapter.
Note
‡
Rechargeable batteries have a limited number of charge
cycles. Battery life and number of charge cycles vary by
use and settings.
Conserve battery power
‡
To conserve battery power and increase
the play time, do the following:
Use the power control widget
With the power control widget, you can switch
off the functions conveniently when they are
unnecessary.
To add the widget to the Home screen,
1
From the Home screen, select
WIDGETS.
8
EN
2
3
To use the widget,
a Switch on or off Wi-Fi
b Switch on or off Bluetooth
c Switch on or off GPS
d Switch on or off background sync (for
e Change the screen brightness
Use the sleep mode
After the selected time duration, PI3900B2/85
goes to the sleep mode, and the screen
switches off automatically. To save battery
power, do the following:
‡
‡
>
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widget.
Tap and hold the widget to add to the
Home screen.
b
c
d
a
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Go to
> Display > Sleep to set the
screen-off timer to a low value.
To switch off Wi-Fi during the sleep mode,
a Go to
> Wi-Fi.
b At the top bar, select
> Keep Wi-Fi on during sleep. Select
Never.
e
> Advanced
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