iPhone customers in the country have been complaining about the problem to the China Consumers Association, the group said in a statement on Tuesday. The shutdowns occur when the phone’s battery charge drops to between 60 and 50 percent.
The problem will persist despite upgrading to the latest version of iOS. It will also occur in both cold environments and at room temperature.  After the automatic shutdown, the phones will also fail to turn on without connecting to a power supply.