Telecom's card shows "Card Disabled" on the mobile phone. What happened?

The reason why the telecom card shows "Card Disabled" on the mobile phone is that the telecom card is not activated.

The specific steps to solve this problem are as follows:

The materials we need to prepare are: mobile phone and telecom 4G card.

1. On the homepage of Baidu search operator's online business hall, click.

2. Click on the "4G Zone" purchased at great value.

3. Click the icon on the right to activate the 4G card, select the area where your mobile phone number is located, and click "OK".

4. After confirming that the activation information is correct, click Activate Now. If the activation fails, you will receive a short message. Just text the phone to consult.