What if the incoming call is not displayed?

It won't be displayed when an incoming call comes. I suggest you.

Verify contact person

Verify that all contacts are not displayed.

♂? The other party has set up hiding.

If the contact does not display the number or name during the call, it may be caused by the other party's setting of hiding.

Internet telephone dialing

Check whether the other party is making a phone call on the Internet. The incoming call may be unknown.

Uninstall software

Uninstall the recently installed software.

Operator settings

If all contacts don't have caller ID, please ask the operator if caller ID is turned on.

Replace SIM card

Try to replace another SIM card.