Zte BLADE 520 User Manual page 25

1. Connect the adapter to the charging jack. Ensure that the
adapter is inserted with the correct orientation. Do not
force the connector into the charging jack.
2. Connect the charger to a standard AC power outlet. If the
phone is on, you'll see a charging icon, such as
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 20 minutes.
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