Tencent micro-card campus card has been unable to recharge.

If the campus card can't be charged with money, the first possibility is that the magnetic card inside the campus card can't be used. Many students will put the campus card in the mobile phone case when it is convenient. In this case, the magnetic card inside can't be used, even if you charge money.

another way is that the card may be damaged and can't be used. The surface you see is quite good. In fact, it is damaged. Generally, if the card is used for a long time, it will show signs of damage. For example, you accidentally wet it and didn't dry it for him. It's just good to be familiar with it often.