21
Using Your Device
•
Please use original accessories or accessories that are autho
-
rized. Using any unauthorized accessories may affect your de-
vice’s performance, and violate related national regulations about
telecom terminals.
•
Avoid using your device near or inside metallic structures or es
-
tablishments that can emit electromagnetic waves. Otherwise it
may influence signal reception.
•
Your device is not waterproof. Please keep it dry and store in a
shady and cool place.
•
Do not use your device immediately after a sudden temperature
change. In such case, it will produce dew inside and outside your
device, so don’t use it until it becomes dry.
•
Handle your device carefully. Do not drop, bend or strike it. Oth
-
erwise your device will be damaged.
•
No dismantling by non-professionals and only qualified techni
-
cians can undertake repair work.
•
Operating temperature range of 0 °C ~ +40 °C and humidity
range of 5% ~ 95% are recommended.
Using Battery
•
Do not short-circuit the battery, as this can cause excessive heat
and fire.
•
Do not store battery in hot areas or dispose of it in a fire to avoid
explosion.
