Has anyone noticed issues with multipart messages to Telnyx? Even purely text based messages are having issues when they are more than 160 characters so they have to be sent as multipart. Anything under 160 is pretty solid.
It’s not even that they all fail. Some 250 character messages arrive. Sometimes I will send it once and the text fails, I wait a few minutes and send the same text and it succeeds. The texts all show as sent from the carrier, and don’t show up in the Telnyx logs at all.
It’s also a very consistent issue to reproduce. We have tried from AT&T, Verizon, T-Mobile, and Twilio. Send a few large texts and 20-70 percent will fail to arrive.
Just wanted to see if others are seeing this, because I assume it is across all of Telnyx.
MMS is coming through fine from what we have seen. Various customers receive images to their Telnyx numbers and haven’t complained about that. Just larger SMS messages.
Also, when I look at the logs from my cell phone it shows the tests all being sent as Text Message for the usage type. I don’t know if AT&T converts really large texts to MMS to help with the transfer, but it doesn’t look like they do for 2-3 part messages.