Zte BLADE V8 SE User Manual page 25

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 change the built-in rechargeable battery in your
phone by yourself. The battery can only be changed by ZTE
or ZTE authorized service provider.
1. Connect the adapter to the charging jack.
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