Put your credit card and mobile phone together in your wallet, because there is a magnetic field in the mobile phone microphone that may cause degaussing of the credit card

1. The many functions of a credit card are mainly realized by an IC chip inside it. If it is kept together with objects with magnetic fields such as mobile phones and TVs for a long time, degaussing may occur. After degaussing, the bank card cannot be read on the card reader.

2. In addition to contact with magnetic fields, violent beating and bending may also damage the credit card chip.