Your local one won't be able to do anything, they have no idea, even advanced support at AT&T has no idea. I have a ticket about this open.My Note 4 is also on AT&T and I also get that error message. No idea why I'm getting it, but it doesn't seem to impact my phone at all. Figured it can wait until the next time I'm near my local AT&T store and pop my head in to ask.
Posted via the Android Central App
I can't change call waiting.I get the error message, but it goes away and I can change the settings on my phone.
Note 4 (AT&T branded and unlocked, using it on a GoPhone plan with a GoPhone SIM).
Posted via the Android Central App
Well the one glitch for me with this is I can not turn off call waiting at all. I do that sometimes with some business calls.Cool. I'll make the call when I get off work.
Just out of curiosity, did tech support say if there are any known problems or glitches associated with this error?
Posted via the Android Central App
Well the one glitch for me with this is I can not turn off call waiting at all. I do that sometimes with some business calls.