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所谓“三频”就是包含3个工作频率,而“三频手机”就是指手机可以同时接收GSM900M、DCS1800MHZ、以及PCS1900MHz这三个频率段的信号,从中做出选择,哪一个频率的信号强,质量好,就用哪一个基站的信号;如果一方(其中的一个频段信号)接不通,可以自由转到另一个频段上。这就扩大了手机的接通率。在一些手机用户比较集中的地区,如大都市繁华地区,尤其合适使用三频手机,因为三频手机能够灵活地
The so-called “tri-band” is to include three operating frequencies, and “tri-band handset” refers to the handset can simultaneously receive GSM900M, DCS1800MHZ, and PCS1900MHz frequency of these three signals, from which to choose which signal frequency, Good quality, which base station to use the signal; if one party (one of the band signal) unreasonable, you can freely go to another band. This has increased the handset connection rate. In some mobile phone users are concentrated areas, such as the metropolitan area, especially suitable for the use of tri-band mobile phone, because the tri-band mobile phone can be flexible