Twilio SMS Sending issue on T-Mobile and Sprint

Question

We are facing very critical issue in Twillio SMS API from last two to three days. We have noticed that Twilio SMS is not receiving in some telecommunications companies.

Verizon & At&t were receiving the SMS.

Metro PCS,T-Mobile & Sprint did not.

Answer 1

I had the same issue. Messages were showing Delivered in the twilio console, but the messages were not physically being delivered. The messages we were sending had some text with some line breaks and also a URL. I had to strip out the URL into a second message, then all worked fine.