Joke Collection Website - Public benefit messages - My mobile card says that I can have an overdraft limit of 10 yuan. Why can’t I make a call if I have a few cents in arrears? Can you please explain?

My mobile card says that I can have an overdraft limit of 10 yuan. Why can’t I make a call if I have a few cents in arrears? Can you please explain?

Hello, you need to activate the overdraft line function first. Send "KTED" to 10086 to activate it. After receiving the SMS message that the activation is successful, the activation is successful. You can overdraft your phone bill by 10 yuan. Once the balance exceeds 10 yuan, your phone will shut down and you will need to pay all the arrears at once before it can be turned on.