I didn't even know that my mobile phone was in arrears. After receiving this message, I was so scared. Is it a big problem? Will it enter the credit report? ...

Hello, yes, you'd better pay. If you don't need this card, you can cancel it in the business hall. Of course, you must pay the phone bill before you cancel. Besides, don't wait, you don't have to owe so much if you pay early and cancel early! Now the cards are all registered by real name. If not, you'd better cancel it as soon as possible! If you lose your card, you can also take the number to the business hall.