[討論] 雙門號手機的疑慮消失
最近發現到一個嚴重問題,不知道是對是錯,提出來跟大家請益與討論
目前市面上大部分的雙卡手機(非4G),例如紅米,zenfone
兩張卡會分別是WCDMA\GSM以及GSM
也就是說其中一個門號只能用目前所謂的2G(900/1800頻段)
問題來了,聽說只要4G一開台,2G就會因頻段重複而結束營業
那是否意謂只要4G一旦開台,這些雙卡收機就無法使用雙門號了?
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