How to activate the card? The new Unicom card can't make calls.

The mobile phone number activation method is as follows:

1. Prepaid users: make voice calls, video calls, use mobile phones to surf the Internet, send short messages, etc. (except for the special telephone number specified by the national and Unicom customer service hotline), and then you can activate the number;

2. Post-paid users: When opening an account, the staff will directly give you the number and use it directly.

Your situation may be caused by not being connected to the signal network. I suggest you search the signal network manually. If not, you can change your mobile phone to test it. If it still doesn't work, it means that there is something wrong with your mobile phone card and you need to go to the business hall to apply for a replacement card.