I am using a Galaxy S5 on 4G LTE service. I have had issues texting for months now. It only happens when I'm at work. When I send a text message, it sometimes gets stuck and never sends. It doesn't matter what phone or service the receiver has. And I can restart my phone and it doesn't send. I usually just wait a few minutes and send a new message and it will go through, but the original message will sit there in queue unless I delete them. Then when I drive away from this city on my way home, the messages will all send at once.
I have no issues receiving messages at all, just sending SMS. I believe it is a problem with the cell tower, since I only run into this problem when I'm in this location. But I really have no idea what's causing it. It has been going on for well over a month now. Any suggestions are welcome!