[請問] 手機2G.3G.4G??
請問各位
如果手機卡為4G或3G
但手機是2G的 3G.4G會自動降頻到2G嗎??
或是手機是3G的 門號是4G的 會降頻還是就直接沒訊號呢??
因為老人機要使用
家裡2G沒訊號
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10/03 15:01, , 1F
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10/03 15:01, , 2F
10/03 15:01, 2F
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10/03 15:02, , 3F
10/03 15:02, 3F
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10/03 15:03, , 4F
10/03 15:03, 4F
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10/03 15:04, 5F
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10/03 15:04, 6F
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10/03 15:04, 7F
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10/03 15:22, 13F
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10/03 15:38, 16F
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10/03 16:06, , 18F
10/03 16:06, 18F
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10/03 16:12, , 19F
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10/03 17:50, , 20F
10/03 17:50, 20F
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