Huawei E5830 Quick Start Guide - Page 19

the air bag inflates. z Do not use your device while flying in an aircraft and before boarding an aircraft. Using wireless devices in an aircraft may cause danger to the operation of the aircraft and disrupt the wireless telephone network. It may also be considered illegal. Operating Environment z Do not use or charge the device in dusty, damp, and dirty places or places with magnetic fields. Otherwise, it may result in a malfunction of the circuit. z While using the device, observe the local laws and regulations, and respect others' privacy and legal rights. z Place the device or accessories in well-ventilated, cool, and out-of-direct-sunlight place. Avoid enveloping the device, or covering towels and placing articles on the device. Place the device out of a box or case to avoid poor heat dissipation that results in the damage to the device. z On a stormy day with thunder, do not use your device, to prevent any danger caused by lightning. z Keep the ambient temperature between -10 °C to +35°C for using the device. 19