1. Bank card chips have a validity period, usually ten years. Cards that have expired or are badly worn and unrecognizable may display abnormal chips on ATM. Bank cards are often put together with magnetic objects, which will lead to degaussing of bank cards. It is best to put the bank card in a hard leather wallet, and pay attention to stay away from the magnetic buckle of the bag to prevent the chip from degaussing or wearing. Don't put the bank card in a messy bag at will to avoid the chip being scratched by coins and keys. At the same time, it is best to separate multiple bank cards, do not stack them together, and stay away from magnetic objects such as mobile phones, computers and tablets to avoid degaussing.
2. If the card inserted in the ATM is unrecognizable, I suggest you go to any bank counter nearby and ask the staff of the branch to check whether there is any problem with the card surface. If there is a problem and you need to change your card, you need to go through the card replacement procedures in accordance with the regulations of the bank. Under normal circumstances, the bank card can't read the chip, indicating that there is something wrong with the chip and the bank card needs to be replaced. Bank card replacement process: prepare the damaged old bank card, cardholder ID card and 5 yuan cash for 20 yuan; At the issuing bank or savings office, take the number first and queue up; After waiting for the call, take the prepared documents and money to the counter; Inform the teller that the bank card is damaged and give the damaged bank card to the teller; At the same time, the ID card should also be given to the teller; Fill in the business application form and pay the handling fee of 5- 10 yuan; Sign the confirmation form, get a new card and get your ID card back.
ATM withdrawal method: Insert the bank card into the ATM card slot in the direction of the corner arrow, enter the language selection interface, select Chinese, and the interface will appear later, then select OK, enter the password, press OK, press the withdrawal key in the service selection interface, enter the withdrawal amount (generally minimum 100 yuan, maximum 5000 yuan), wait for the machine to count the money, and take out the cash after the cash slot is opened, select the card, and withdraw the cash from the ATM.