13
•  
Avoid collision, which may lead to device 
malfunctions, overheating, fire, or explosion. 
•  
Before you clean or maintain the device, stop using 
it, close all applications, and disconnect all cables 
connected to it.
•  
Do not use chemical detergents, powders, or other 
agents (such as alcohol or benzene) to clean the 
device or accessories. These substances may cause 
damage to parts or present a fire hazard. Use a clean, 
soft, and dry cloth to clean the device and 
accessories.
•  
Do not place magnetic stripe cards, such as 
bankcards and phone cards, near the device for 
extended periods of time. Otherwise, these cards 
may be damaged.
•  
Do not dismantle or attempt to modify the device or 
its accessories. This voids the warranty and releases 
the manufacturer from liability for damage. In case 
of damage, contact an authorised service centre for 
assistance or repair.
•  
If the device screen is damaged, stop using the 
device immediately. Do not touch or attempt to 
remove the broken parts. Contact an authorised 
service centre as soon as possible. 
Emergency calls
The availability of emergency calls is subject to the signal 
quality, service provider policy, and local laws and 
regulations. Never rely solely on your device for critical 
communications such as medical emergencies.