Joke Collection Website - Blessing messages - What if the phone doesn't have caller ID? Small airport radio communication system

What if the phone doesn't have caller ID? Small airport radio communication system

1, you can call 100 10 Unicom customer service to ask whether your caller ID function is turned on normally.

2. The other party uses some software to hide the number, so you can't see the caller ID of the other party.

I suggest you dial 100 10 to check the status of your caller ID, and reopen it if it is not opened.