ZTE Blade A430 - Manual (Page 16)

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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, portable hotspot, 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.
Powering On/Off

Press and hold the Power Key to turn on your phone.

To turn it off, press and hold the Power Key to open the
options menu. Touch Power off and then touch OK.