Wechat also shows that credit cards can be upgraded. What happened?
It is caused by long use time. Wechat also shows that the card can be upgraded due to its long use time. Wechat is a free application launched by Tencent on 201110, which provides instant messaging service for intelligent terminals. It was created by the product team of Tencent Guangzhou R&D Center led by Zhang Xiaolong.