If there is a black screen of an iPhonex call, it is suggested to handle it as follows:

1, forced restart, some softwares occupy unstable system resources when running, which can be solved by restarting. Of course, this only limits the situation of rare crashes;

2. If the problem still exists, cclean, slim down the phone;

3. Kill the virus and restore the factory settings of the mobile phone;

4. Refresh the machine-download a system package again and connect the computer to refresh the machine;

5. If there is still a problem, it is the motherboard problem, and it is recommended to send it for repair after sale.