Recently put a network extender in my home and now am almost completely unable to SEND text messages at all. I'd say roughly 80-85% of the time it fails with an error something like "nwtk fail message not sent".
1. I still get all incoming SMS messages
2. Before the extender, I had no problems texting outbound.
3. Network Extender = Voice improver, SMS inhibitor??
Have reset the device many times with zero affect on the problem..