Over a year ago I switched from Telecom to 2degrees. I also brought my Telecom number over to 2degrees. For most of the time, I had no problems. But recently, I have been unable to send any SMS whatsoever to any network, including 2degrees. I receive SMS from all networks, but cannot reply with SMS. I can voice call to all networks, however.
My phone is a ZTE R6, originally on Telecom. When I send a SMS, it confirms it has sent without error, but the SMS never seems to show up on the recipient's phone. Does anyone know what the problem is?