Bank of Communications changed its credit card, but did not use its original address. The problem is that the reserved mobile phone number has been changed. Now people are in other places, only with their ID cards. To apply for a new credit card, you only need an ID card, and you don't need to bring an old credit card (expired and invalid, you can destroy it yourself). However, it is necessary to rebind the new mobile phone number at the counter of the Bank of Communications business hall more than one month before the credit card expires, and change the card receiving address, otherwise the new card will be mailed at the original address by default.