cause an injury if used as a toy. 
•  When the device is operating, do not touch the metallic parts. Failing to 
do so may cause burns. 
•  Use original accessories or accessories that are authorized. Using any 
unauthorized accessories may affect the performance of the device and 
violate the related national regulations about telecom terminals. 
•  Avoid using the device near or inside metallic constructions or 
establishments that can emit electromagnetic waves, because signal 
reception may be affected. 
•  The device is not waterproof. Keep the device dry and store it in a shady 
and cool place. 
•  Do not use the device immediately after a sudden temperature change, 
because dew may be generated inside and outside the device. Do not 
use it until it becomes dry. 
•  Handle the device carefully. Do not drop, bend or strike it. Otherwise the 
device may be damaged. 
•  Only qualified personnel can dismantle and repair the device. 
•  A humidity between 5% and 95% are recommended. 
•  Do not connect the charger while using the device for a long period. 
Failing to do so will trigger the protection mechanism of the battery, and 
the battery will not be charged. If you want to charge the battery, please 
reconnect the charger. 
•  Do not connect the charger while using the device for a long period or 
use the device and battery in non-operating temperature. Failing to do so 
will shorten battery life or cause battery swelling or leakage. If the battery 
shows signs of swelling or leakage, please stop use immediately. 
26