4G S8 to be disconnected with 3G shutdown - here is what you can do

AT&T is absolutely lying about it.  I have a Samsung S21 Ultra phone that was "shutdown" on their network because it was deemed incompatible with their network. Whitelisted, unlocked, correct model number, reps all confirmed it was on the list and using the correct AT&T build but they said it wouldn't work because I didn't buy it from them. Mysteriously when I put a working SIM from my second phone number in it's been fully functioning despite 7 people at AT&T telling me it was an incompatible device.

Probably a combination of poor training and many areas where the problems could be.  

As someone who, in the past, has had account configuration problems.  In my case with an iPad in the past.  I suspect there are account configuration parameters that are hidden from many reps.  Since more that is visible, more that can be messed up.  There may be subtle interactions between settings that may prevent an otherwise compatible phone from working, so the customer is told something to hopefully get off the call.  

Just to follow up on my last post, after chatting with a supervisor last night who told me I had to go to the AT&T store and they would provide a free replacement,  going to the AT&T store and having them tell me they don't have replacement phones I'll have to call customer support and get one shipped and customer support telling me they won't give me a replacement device.

So I'm switching my 4 lines to another carrier.

Well, to follow up on my (too good to be true) free S22.  I checked my account and guess what ATT is billing my $23/month for 36 months.  Something I clearly never agreed to.  It certainly looks like the LILY ON TV deal.  Supposedly I will get bill credits starting 3 months from now. How much I don't know.

That sounds right on postpaid. The credits should March. On prepaid it was free and clear. But a much lower end phone. 

I have an unlocked S8+ G955U that is VoLTE compatible, and is working fine.  However, my phone is AT&T branded.  If the "Enhanced LTE Services" option doesn't show up on your phone, AT&T Customer Service can push an update to fix it.  That's what had to be done to mine.  Also, had to replace my SIM card.

Wishing you all the best on this debacle (as a "T" shareholder, I really really am).

As a consumer, I have completed my switchover of all 3 of our lines now, to tmobile, and so far it is better reception and a few other things, so I am not looking back and am going to stop getting updates to this thread.

Again, wishing all of you going through the 5G pain the best in getting a resolution that works for you

Worse than that, they can't deliver for almost 4 weeks.  What a joke

I have a 950u1 and a 950u... the 950u1 clears a imie check, its factory unlocked.. it works on gsm AND cdma.

i flashed the 950u firmware ending in DUD3 to the 950u1 and its works perfect. It would not make calls until i flashed it, and i have a volte option where I didnt before.

the 950U1 firmware ending in DUD3 DID NOT WORK it didnt have the volte option for some reason.

the 950u wont clear the imie because its not a usa phone, no firmware will fix this. even a usa csc firmware. if the imie fails you need to go to tmobile.

its a facory unlocked  950u1 verizon usa brand phone. i used the verizon xxxxDUD3 950u firmware

ILL STATE THIS AGAIN.....

if your ime clears a firmware switch will solve your issue, 

950U was only sold in the USA just a FYI..  U is for USA.