Zte Optus X Start 4 User Manual page 61

 Do not disassemble, squeeze or puncture the battery, as
this can cause explosion or fire.
 When not using the battery for a long period, please
charge the battery about half then remove the battery
from your device and store it in a cool dry place.
 If the battery damages or shows signs of swelling or
leakage, please stop use immediately and contact ZTE
or ZTE authorized service provider for replacement.
 Return the worn-out battery to the provider or put it in the
designated recycle place. Do not put it in household
waste.
 There is a risk of explosion if the wrong battery model is
replaced.
WARNING!
If the battery is broken, you should avoid contact with the
contents inside. If they contaminate the skin, immediately
rinse with plenty of water and seek medical help when
necessary.
Small Children
Do not leave your phone and its accessories within the
reach of small children or allow them to play with it. They
could hurt themselves or others, or could accidentally
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