Joke Collection Website - Public benefit messages - Why can a mobile card send and receive short messages but not open traffic?

Why can a mobile card send and receive short messages but not open traffic?

Make sure there is nothing wrong with the card you cut. If there is something wrong with the card, go directly to the business hall to change it, and use i5 to move the small card. If there is nothing wrong with the card, set it directly, then send the message, see the options inside, and send and receive the message-just open it. If not, 10086, ask if it is necessary to update the area code.