iPhone 5S can't send text messages.
I have an iPhone 5S, but it's can't send text messages to other iPhones.
I can send messages to android devices, but for iPhones, I can't.
My iMessage, and "Send as SMS" is already turned on, but thats doesn't work.
Do you know, how can I solve this problem?
iPhone 5s, iOS 9.0.2