What should I do if the phone cannot be turned on? If the phone does not turn on during normal use, you can first connect the computer to iTunes (please download and install this software if it is not installed on the computer) and click Restore Device or Update Device to perform system recovery or flash. If an error occurs during recovery or the computer is not connected, then there is a problem with the phone hardware. Hardware failure can only be repaired by a professional repairman.
For abnormal use that does not turn on, such as a serious fall or a bent and deformed back shell, do not do anything, and directly ask a professional to handle it to avoid secondary damage to the phone.