Never upgrade to iOS 10.2.1! It is revealed that the fatal Bug

­Apple's push of iOS 10.2 has been widely praised by users, and some even say that iOS 10.2 has brought stability back. However, Apple's release of iOS 10.2.1 last month seems to have created a new problem. According to Weifeng, Forbes magazine said in a report a few days ago that a number of Apple users have complained on social platforms and Apple's technical support community about a series of problems caused by the upgrade of iOS 10.2.1, including:

­unable to properly use the Touch ID function on the device, unable to properly use the Bluetooth function of the device, abnormal screen brightness of the device, increased power consumption of the device (even in flight mode), and so on.

­according to some domestic netizens, some users took the devices affected by iOS 10.2.1 to Apple's authorized maintenance center for testing, and the result was that the Touch ID malfunctioned, which is inconceivable. So far, Apple has not sent technicians to explain these new problems, and there is no more effective solution. Before Apple makes a sound, we recommend that you think twice when upgrading iOS 10.2.1.

­according to past history, if the impact of the iOS 10.2.1 failure is large, Apple will also release an upgrade patch soon. Maybe from next Tuesday, we can see that the new Beta version includes fixes for these problems.