Zte BLADE VEC PRO User Manual page 20

WARNING!
Use only ZTE-approved chargers and cables. The use of
unapproved accessories could damage your phone or cause the
battery to explode.
CAUTION:
Do not remove or change the built-in rechargeable battery in your
phone by yourself. The battery can only be changed by ZTE or
ZTE authorised service provider.
1. Connect the adapter to the charging jack. Ensure that the
adapter is inserted in the correct direction. Do not force the
connector into the charging jack.
2. Connect the charger to a standard AC wall outlet. If the phone
is on, you'll see a charging icon, such as
the status bar.
3. Disconnect the charger when the battery is fully charged.
20
or , appear on