[問題] 4G無法自動變頻嗎?已回收
以我用3G手機的經驗
在收不到3G信號時,或信號微弱時
手機都會切換到2G接收GPRS的信號
所以我想請問當4G沒信號,或信號微弱時
不會切到3G模式嗎?或是再下切到2G ?
如果可以切換模式的話
為什麼4G要限流量?
過量可以強制切換到3G模式吧? (128k連3g的流量都不如吧?)
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