how come i can't send out txt, but i can recieve it?

[AC Question]

my txt messaging does not work correctly I can receive it but can't send it out always Failed message. tried to set up from message app but can't find the option "MESSAGE CENTER" where you can put the ID #,How do I recover the Message center?

 

[the tall guy]

Hi, speak to your service provider - they'll be able to assist.