[問題] 3g 4g選擇?已回收
因為所在地區為郊區,
主要用途為用line,
1. 3g收訊好,4收g訊不好,
不知該不該辦4g?
2. 4g訊號抓不到會自動抓3g訊號嗎?
(HTC Desire 820 dual sim )
3. 3g 4g關於用line,速度會有差嗎?
謝謝。
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※ 編輯: TREKKER (114.39.165.117), 03/30/2015 11:33:47
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