Unable to send SMS messages

[AC Question]

I got an S5 a couple of weeks ago and all of my messages are sending as mms. How can I change this?

 

[liznotissy]

I have tried to go to settings and click on message centre but I don't have the option to click it.

 

[Aniket Mhatre]

Contact your operator. Or else check message centre number in settings
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