And please don't ask sorry and all.. Its is too formal ฝรั่งเขาหมายถึงอย่างไรครับ

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I'd like to ask a Dtac staff member. I've set up my 5G smartphone and selected 5G as the first option, but the signal is always 4G+. When I press *555# and call to activate 5G, the system replies, &q