What is the purpose of setting up SMS center on Samsung S7?

The short message service center has the function of storing information and is equivalent to an information transfer station. Text messages sent by mobile phones are first sent to the information center, and then sent to the terminal number by the information center. If the number is incorrectly filled in, the mobile phone will not be able to send text messages normally. For inquiries about the SMS service center number in the location where your mobile phone card is located, please call the operator of the card you are using