Zte Star 1, User Manual

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2. Connect the charger to a standard AC wall outlet. If the phone
is on, you‟ll see a charging icon, such as
or
, appear
on the status bar.
3. Disconnect the charger when the battery is fully charged.
NOTE:
If the battery is extremely low, you may be unable to power on
the phone even when it is being charged. In this case, try again
after charging the phone for at least 10 minutes. Contact
customer service if you still cannot power on the phone after
prolonged charging.
Extending the Battery Life
Active applications, screen brightness levels, Wi-Fi usage and
GPS functionality and other certain features can all drain your
battery. You can follow the helpful tips below to conserve your
battery power:

Reduce the screen backlight time.

Lower the screen brightness.

Turn auto-sync, Wi-Fi, and Bluetooth off when not in use.

Disable the GPS function when not in use. Most applications
using this function will periodically query the GPS satellites
for your current location; each query drains your battery.