Mobile phone card is too old. Can I change it in the business hall?

To replace an old card with a new card, you only need to go to the mobile business hall where the card is opened to apply for a replacement card, and you can change the card. The number remains unchanged, and the phone bill and package are unchanged.

Extended data

SIM card is the abbreviation of (subscriber identity module).

GSM digital mobile phones are also called subscriber identification cards and smart cards, and they must be installed before they can be used. Digital mobile phone customer information, encryption key and user phone book are stored on the computer chip, which can be used to authenticate the identity of GSM network customers and encrypt the voice information when customers talk.

SIM card is the abbreviation of (subscriber identity module).

GSM digital mobile phones are also called subscriber identification cards and smart cards, and they must be installed before they can be used. Digital mobile phone customer information, encryption key and user phone book are stored on the computer chip, which can be used to authenticate the identity of GSM network customers and encrypt the voice information when customers talk.

References:

SIM card-Baidu encyclopedia