Huawei M635 User Guide - Page 42

Cleaning and Maintenance • The device, battery, and charger are not water-resistant. Keep them dry. Protect the device, battery, and charger from water or vapor. Do not touch the device or the charger with a wet hand. Otherwise, it may lead to a short circuit, a malfunction of the device, and an electric shock to the user. • Do not place your device, battery, and charger in places where they can get damaged because of collision. Otherwise, it may lead to battery leakage, device malfunction, overheating, fire, or explosion. • Do not place magnetic storage media such as magnetic cards and floppy disks near the device. Radiation from the device may erase the information stored on them. • Do not leave your device, battery, and charger in a place with an extreme high or low temperature. Otherwise, they may not function properly and may lead to a fire or an explosion. When the temperature is lower than 0°C, performance of the battery is affected. • Do not place sharp metal objects such as pins near the earpiece. The earpiece may attract these objects and hurt you when you are using the device. • Before you clean or maintain the device, power off the device and disconnect it from the charger. • Do not use any chemical detergent, powder, or other chemical agents (such as alcohol and benzene) to clean the device and 40