Zte SPRO Quick Start Manual page 25

To charge other devices when powered on:
1. Connect your Spro to your phone or other devices via a USB cable (not
included).
2. To turn on the Power Bank feature to start charging, press and hold the
Power Bank Key until the icon
3. When the charging completes, press and hold the Power Bank Key
until the icon
To charge other devices when powered off:
1. Connect your Spro to your phone or other devices via a USB cable.
2. To turn on the Power Bank feature to start charging, press and hold the
Power Bank Key until your Spro vibrates, and the indicator light will
turn green and flash.
3. When the charging completes, press and hold the Power Bank Key
until the indicator light turns off.
disappears to turn off the Power Bank feature.
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appears in the status bar.