Huawei U8220 User Manual - Page 157
Operating Environment, time are reduced.
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Operating Environment • 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. • The device complies with the RF specifications when the device is used near your ear or at a distance of 1.5 cm from your body. Ensure that the device accessories such as a device case and a device holster are not composed of metal components. Keep your device 1.5 cm away from your body to meet the requirement earlier mentioned. • On a stormy day with thunder, do not use your device when it is being charged, to prevent any danger caused by lightning. • When you are on a call, do not touch the antenna. Touching the antenna affects the call quality and results in increase in power consumption. As a result, the talk time and the standby time are reduced. • While using the device, observe the local laws and regulations, and respect others' privacy and legal rights. • Keep the ambient temperature between -10°C and 45°C while the device is being charged. Keep the ambient temperature between -10°C to 45°C for using the device powered by a battery. 152 Appendix