I can't send text messages on my mobile phone. I can't check the traffic. Who can tell me how to do it?

Hello, maybe the number of the information center is set incorrectly. Open Messages, enter information settings and select Information Center, just enter the number of the information center. (The number of the information center varies with the place where you belong, so you need to enter the number of the information center to which your mobile phone number belongs in order to send and receive short messages normally. )