How do I fix Samsung Galaxy S5 (AT&T) SAMSUNG-SM-G900, to send sms messages?

[jsmx32]

Today my Samsung Galaxy S5 decided to stop sending sms messages, I can send mms messages, receive messages (mms and sms), and send and receive calls. Whenever I try sending a message it tries sending for a long time, only to tell me that the message failed to send. I already factory reset my phone before and that didn't do anything. I tried taking the battery out for a couple minutes and nothing happened. What do I do?

 

[Samuel Orris]

My be your MMS setting was deleted. Go to Setting>More>Mobile Network>APN(Access Point Name) .
Add your MMS profile.
Or call in service centre and tell them to set MMS setting auto.