If you don’t receive any calls and people who trying to call you say that they are transferred directly to your voice mail, it might happen because you are on Do Not Disturb mode on your iPhone.
To activate or deactivate Do Not Disturb mode:
Do Not Disturb Option in The Settings Window
- Open Settings on the main screen of your phone.
- Scroll down and look for Do Not Disturb option and click it.
- In the Do Not Disturb window, deactivate and turn off this option by clicking it (Green or blue – Activated state, Gray – Deactivated and turned off).
That’s it. Ask a friend to give you a call and check if all fixed for you.
If the problem consists, try to contact your cellphone provider to get help, it might be a problem with your cellphone line and other technical problem.