c*d
4 楼
virgin mobile.
c*2
5 楼
手机carrier大的就4个 att Verizon sprint tmobile
signal-best to worst: Verizon=att>tmobile>sprint
price-expansive to cheap: att>>Verizon>sprint>tmobile
signal-best to worst: Verizon=att>tmobile>sprint
price-expansive to cheap: att>>Verizon>sprint>tmobile
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