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1、不能在飞机上开机通话，以免干扰通信灵敏度危及飞行安全。2、不能在有禁止无线电发射标志的区域开机。如引爆作业场地、汽车加油站等。3、不宜开机更换手持机天线，应收关机后再更换，以保护“大哥大”收发信息，机不受损坏。4“大哥大”镍镉电池禁止，池禁止接近火源，因
1, can not start the call on the plane, so as not to interfere with the communication sensitivity endanger the flight safety. 2, can not be banned in the area of radio transmission signs boot. Such as detonated job sites, car gas stations. 3, should not boot replacement antenna handset, should be shut down after the replacement, to protect the “big brother” send and receive information, the machine will not be damaged. 4 “Brother” nickel-cadmium battery ban, the pool is prohibited near the source of fire, because