can't send text messages iphone 6s
Ok so, the last few days my mom hasn't been able to send text messages
She CAN send picture messages and call, also receive messages and calls
We tried resetting the network, turning it on and off, etc
I'm unsure what to do at this point.
Also, she has a normal phone plan without data, it's never been an issues.
iPhone 6s Plus, iOS 10