Zte Concord II User Manual page 164

j) Avoid dropping the phone or battery. If the phone or battery is
dropped, especially on a hard surface, and the user suspects
damage, take it to a service center for inspection.
k) Improper battery use may result in a fire, explosion or other
hazard.
For those host devices that utilize a USB port as a charging
source, the host device's user manual shall include a statement
that the phone shall only be connected to CTIA certified
adapters, products that bear the USB-IF logo or products that
have completed the USB-IF compliance program.
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