The failure to charge the phone after upgrading the iOS 17 system may be caused by a variety of factors.
First of all, overuse of mobile phones may shorten the battery life, thus reducing the battery capacity.
Secondly, the use of poor quality electrical appliances or data cables may also affect the charging of mobile phones, and even damage the mobile phone battery. At the same time, there may be a bug in the iOS 17 system that causes the battery indicator to be wrong or the charging speed to be slow. The best solution is to use the official battery and data cable, and re-check the phone battery capacity. If the problem persists, it is recommended to contact Apple customer Service for more support.