Can the mobile phone card be read after degaussing?

The mobile phone card is not a magnetic card and will not be degaussed.

Take out the card first, clean up the place where the card has a magnetic core, then rub the chip with your hair, and then try to plug it back into the phone. It is possible that the card is loose or dirty, which leads to the non-display.

Try to wipe it with a clean rag. If it still doesn't work, consult local 10086. In some areas, the card has been reissued in different places, but the short message and mobile phone number on the card are gone after the card is reissued.

There is an integrated circuit chip in the SIM card. As long as the chip is damaged, the SIM card cannot be used, such as drawing a line on the SIM card. 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.

Extended data; SIM card is mainly used in GSM network, W-CDMA network and TD-SCDMA network, but the compatible module can also be used in IDEN mobile phone. Some people refer to the RUIM card and UIM card of CDMA2000 and cdmaOne, also called SIM card. Although they have similar functions and abide by all the same mechanical and electrical standards and some software standards, the upper applications are not necessarily compatible.

SIM card consists of CPU, ROM, RAM, EEPROM and I/O circuit. When users use SIM, in fact, the mobile phone sends commands to the SIM card, and the SIM card should be executed or rejected according to the standard specification; SIM card is not a simple information memory.