Zte Optus X Pro User Manual page 70

 Do not disassemble the handset as this can cause
explosion or fire.
 When not using the phone for a long period, please
charge the battery about half then switch off the device.
 If the battery is damaged or shows signs of swelling or
leakage, please stop use immediately and contact ZTE
or ZTE authorized service provider for replacement.
 There is a risk of explosion if the wrong battery model is
replaced.
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
damage the phone.
Your phone contains small parts with sharp edges that may
cause an injury or may become detached and create a
choking hazard.
Demagnetization
To avoid the risk of demagnetization, do not allow electronic
devices or magnetic media close to your phone for a long
time.
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