How long can Unicom Tencent Dawang Card be cancelled?

King card is a post-paid card. If it is overdue for more than 90 days, China Unicom has the right to recover the right to use the number and cancel the account. The fees owed by the owner also need to be paid, otherwise it will become a blacklisted user, which will affect future business handling. If you don't use it, it is recommended to cancel the account through your mobile phone or Unicom's own business hall.