I have a (later) Samsung S9+ which I ported from ATT to Consumer Cellular (ATT Svc.) service within the last yr. Everything (initially) worked until CC began their move to 5G and dropped 3G. For the last few days I have NOT been able to make calls.. But, I have received calls satisfactorily. Internet access is still good.
CC gives me several answers after I contacted them about their Records being incorrect - that I had a 4G Phone. Originally, all was OK and they 'corrected' their records. Now, they Insist I buy a new phone. They stated the problem is that the S9+ cannot (fully) support VoLTE.
Samsung Tech:
According to Samsung documentation, the S9 supports 4G LTE. If that is correct, and voice over LTE is simply VoLTE... then my S9 should work as well as any other similar device? But it doesn't. It cannot make OUTBOUND CALLS as provisioned.
More Info:
When I look at "Networks" on the S9, there is only 2G and 3G listed. VoLTE Calls is Enabled; The selected Network mod(options) = LTE/3G/2G (auto connect).
No 4G is displayed. Is this limited by the SIM ? Or, something else?
Checking:
When I do a IMEI verification with MINT... it is OK to port. Does MINT use ATT and VoLTE also?
I am about to jump off of CC.
Help?