Hello~ I have to pay my bill at first time. but I don't know until when I should pay the my bill. I want to know my expire date that charged bill. I transited phone by my friend to use keep go on from Feb.28th. And then it charged including this month bill that can use until Afril 5th. E-bill arrived today morning but it did't mention until when must pay. Because I can't pay in short period. Could you let me know that?