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I mistakenly use my mobile data to watch drama, right now is 95% been used. If I wanna purchase more for this time only; What should I do? How much do I have to pay?please reply ASAP. And, thanks for help! 

My plan detail labeled I have unlimited international text,  however, I got three text messages said that the plan does not include text messaging.  then I tried to msg my friend, the message can not be sent.I'm wondering if the system or technicist ...