Hey all I was given an Eris by a friend so I rooted it easy enough at 1.5 last August. Since then I have had a few different custom roms loaded and everyone of them that I tried to activate the phone on didn't work. This phone was not activated when I rooted it, and I have to take it to my local verizon shop to have them try to activate it after they deactivate my moto droid 1. I' ve been digging for awhile now trying to figure out if it's the baseband version or what. Can someone please help if at all possible.
Current phone info:
Firmware: 2.1
Baseband: 2.42.01.04.27
Kernel: 2.6.29,
Build: 2.36.605.1 case release-keys
Software 2.36.605.1
Browser WebKit 3.1
PRI: 2.11_002
PRL: 58003
ERI: 5
When the phone boots it shows the verizon logo which doesn't completely mean the radio is flashed for versions network, but I have no idea how to tell otherwise.
Thanks.
If you activate the phone with a stock, or near-stock ROM (let's say Ivanmmj's "Official 1.0"), then thereafter, nothing you do to the phone with dev ROMs from this site will change the phone's activation data (stored in the phone) afterward - not flashing a different radio, nor performing a "wipe/factory reset" (in Amon_RA), nor installing a different ROM will change that.
When it comes to deactivating the phone - or more precisely, clearing the activation state of the phone, the only thing that seems to accomplish that is one of the factory recoveries - Amon_RA does not touch it. This happens if you perform a "factory reset" in the regular OS, which actually causes a boot to the recovery, which does all the "dirty work". You can also manually boot the stock recovery, and use the wipe menu to achieve the same result.
You can see that this makes de-activation inconvenient for rooters - but most of them don't need to do that.
So I'm reluctant to conclude that the radio firmware is affecting your result.
What happens when you try dialing *228 option 1? The call goes through, but you get an error voice announcement after some delay?
I was under the impression that people that flip back and forth between two phones on the same service don't ever bother to de-activate the phone in use: they just make sure that current phone is turned off before they attempt to activate the next phone.
I suppose you could restore the phone back to complete stock (including the stock recovery) before activating it, and then re-root it and reload a nandroid backup... but that's sort of a pain in the neck if this is something you plan on doing regularly.
bftb0
PS I could swear I have activated my phone (*228 option 1) with a dev ROM on the phone, but don't remember the specific details.
First off thanks for the quick reply. I've been researching this whole time and when I dial *228 I don't even get prompt to pick an option. This tells me that somehow the radio itself is possible damaged. Is there anyway a rom could damage it? I ask knowing it's highly unlikely... I know the phone worked fine up to the release of the droid x when the friend upgraded to it. And all I've done is rooted and flashed, so I'm curious, can I test the radio at all?
Thanks.
RnkG said:
First off thanks for the quick reply. I've been researching this whole time and when I dial *228 I don't even get prompt to pick an option. This tells me that somehow the radio itself is possible damaged. Is there anyway a rom could damage it? I ask knowing it's highly unlikely... I know the phone worked fine up to the release of the droid x when the friend upgraded to it. And all I've done is rooted and flashed, so I'm curious, can I test the radio at all?
Thanks.
Click to expand...
Click to collapse
I just re-read your initial post and actually can't tell if the phone has ever been successfully activated since you received it. You mentioned taking it in to the Verizon store, but you didn't say what the outcome was - was the Verizon store unable to activate it?
Normally when you dial *228 it just sounds like a normal voice call - you hear audio, the recorded lady's voice provides a menu, etc. Since that needs to happen in order to activate the phone, it is fairly obvious that the cellular radio must be working completely for that to happen - so the fact that you don't hear any audio seems to indicate something is wrong.
Why don't you try and reflash the phone back to stock using the download from this thread which also flashes the radio:
[ROM][10/20/2010]FlashBack21 v1 -Return to Factory Stock - UPDATED
And see if that gets you any different result. That would eliminate any effect of "dev" software, and also reflashes the radio with the July 2010 version - the last one officially shipped by VZW/HTC for the Eris. If you can't get audio (and you are sure from playing music that there isn't a speaker problem), that would point to a hardware problem.
BTW - even if the phone is working completely, VZW needs to already be aware that it's ESN/MEID is associated to your account, and I think that your other phone needs to be turned off at the time you attempt activation.
cheers
Thanks again. I'll work through that and then post back here.
Thanks again!
So I followed the simple to use guide as directed and everything flashed just fine. When when I got to the activate screen I tried to activate and when it dialed the number I hear nothing. So I turned the speaker on and hit number on the dial pad to make sure the volume is working and it appears to, but it doesn't make the ringing sound when you normally call a number. Soooooo as a desperate act to see if the radio was working what so ever I did something crazy... dialed 911, and I heard it ring one time, then hung up and pulled the battery. So i think the radio works fine in it, I'm going to go to the verizon store and have them try and activate it again.
Thanks a million for all of your help! I really, really appreciate it!
Update:
Just got back from the verizon store. They maunally activated the phone and still no connection to the network. What I don't understand is how when I dialed 911 it rang but nothing else will. Could verizon be blocking this phone?
RnkG said:
So I followed the simple to use guide as directed and everything flashed just fine. When when I got to the activate screen I tried to activate and when it dialed the number I hear nothing. So I turned the speaker on and hit number on the dial pad to make sure the volume is working and it appears to, but it doesn't make the ringing sound when you normally call a number. Soooooo as a desperate act to see if the radio was working what so ever I did something crazy... dialed 911, and I heard it ring one time, then hung up and pulled the battery. So i think the radio works fine in it, I'm going to go to the verizon store and have them try and activate it again.
Thanks a million for all of your help! I really, really appreciate it!
Update:
Just got back from the verizon store. They maunally activated the phone and still no connection to the network. What I don't understand is how when I dialed 911 it rang but nothing else will. Could verizon be blocking this phone?
Click to expand...
Click to collapse
If they activated it I don't know how they could be blocking it. I would've checked to see if it was working before I left the store, and when it wasn't, would've brought this issue up with them.
Are you just going by their word that they activated it, or is there some other way you can tell that it's activated, even though you're not getting any service? What I mean is, if you're not getting any service, how can you be sure they activated it successfully?
RnkG said:
Update:
Just got back from the verizon store. They maunally activated the phone and still no connection to the network. What I don't understand is how when I dialed 911 it rang but nothing else will. Could verizon be blocking this phone?
Click to expand...
Click to collapse
Other than bad hardware, the only thing which would cause this problem would be a "blacklisted ESN" - that would usually be a stolen phone, or a phone that was on a Verizon account that was abandoned by the subscriber with an unpaid balance. (Verizon doesn't want customers who cheat them to continue to cheat them by habitually opening new accounts under assumed identities, so they just blacklist the ESNs of phones that were used on abandoned accounts with unpaid balances)
Verizon won't activate phones with blacklisted ESNs - but if you walked in the phone store and asked them to activate it for you, I would presume that they would have told you straight up "We can't/won't activate this phone".
The radio does not use a separate technology for 911 calls, so, yeah - there is something odd going on here. Perhaps you had a "green" VZW customer assistant that isn't familiar with what happens when someone wants to activate a blacklisted phone, and simply didn't take notice when "something unusual" popped up on the computer they used to enter in your activation request.
You've got stock software on the phone now, so I wouldn't hesitate to pick their brains about it. Telling a VZW tech about the 911 call might convince them a little better - but just remember that you are admitting to a criminal activity (calling 911 without due cause).
Also - bear in mind that by law (in the US) every cell phone has an aGPS unit in it, precisely for the purpose of emergency services locating a cellular handset when the user is incapacitated. ( There is a small risk that if you make a 911 call, cops will end up at your door even if you hang up.)
I am experiencing a large number of dropped calls. Like every other call gets dropped. I'm restoring back to OEM non-root and going to test it. Does anyone else have this issue?
I haven't personally experienced this issue, but I would recommend flashing a new radio first before restoring. It could save you some headache.
Where are you at? I'm in dallas tx a and have been having alot of issues.
angasreid said:
I am experiencing a large number of dropped calls. Like every other call gets dropped. I'm restoring back to OEM non-root and going to test it. Does anyone else have this issue?
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Click to collapse
I am having precisely the same issue. I have flashed to the latest MR2 radio AND updated to BAMF 2.1's excellent Gbread build, but if anything, it's worse. The symptoms are the same as others experiencing the issue - talking normally, when bam - the phone hangs up (my wife is an especially big fan of this).
I honestly don't think it's a rooted vs: non-rooted issue. It started happening before I rooted!
I see other people resolving the issue by dialing *228 and selecting option 2, but when I do that, the phone tells me it already updated the roaming profile at boot up via the SIM card.
Does anyone have any other suggestions before I un-root and get a new one from Verizon?
Unroot and test. Call vzw and see if there is any dropped calls or problems in the area..
Starr 228 doesn't work on 4G everytime you turn on your device it searches for towers
Hey guys, this did not happen at first, but today I have been experiencing some big issues with my phone.
I have been using the UVLK1 ICS based radio since I am an AT&T Galaxy Note user on the T-Mobile Network.
People have been calling me and my phone isn't ringing. I am getting Google Voice e-mails for voicemails they leave me but the phone never rang. I am at work where I always have gotten great service at all times. I rebooted the phone and it is still doing the same thing.
Any ideas?
Now I can't even make calls...the phone disconnects the call right after I tap the make call button...
Now I flashed the Blaze 4G radio, doing the same thing. Can't receive calls and immediately disconnecting when trying to place calls.
Data isn't working either..
Pulled the SIM card, put back in, problem solved. Weird!
It is doing it again! This morning it happened and I had to pull battery and SIM, reboot, it worked but shortly after stopped working...
issues with TMobile radios on galaxy note
I have experienced similar problems as well, but not to the extent to where my phone doesn't work at all. Since TMobile sells the Note now, I'm sure someone will port the full ROM or at least the radio.
avantcs said:
I have experienced similar problems as well, but not to the extent to where my phone doesn't work at all. Since TMobile sells the Note now, I'm sure someone will port the full ROM or at least the radio.
Click to expand...
Click to collapse
i'm using the SGH-I727 with various T-Mobile radios and having the same issue, kinda. It will work for about 3-5 hours then stop. The signal meter still works, 2-3 bars in my area, even flucuates. However it will say (Searching) and nothing comes in or goes out. It does not work again until rebooted. Then the process repeats.
Any other t-mobile subscribers with you? The crazy weather might be a cause.
Can you put your sim in your back up phone?
I've got a rooted unlocked s-off AT&T M8. I took the 4.4.4 update, then promptly moved to ARHD 34.0. Didn't realize it at first, but I am no longer able to receive calls while on LTE. (works fine for data, and outgoing calls)
If I force it down to 3g, I'm fine. I also noticed that outgoing calls automatically kick it down to 3g- then learned that LTE calls are not an option yet for AT&T. What I'm trying to figure out is, how was I able to have my stock rom on AT&T in LTE mode and still receive a call?
I've checked all the APN settings and it all is set to recommended parameters on AT&T's website. Is this an Android Revolution HD issue? SIM issue? AT&T issue?
I'm going to have to back out of ARHD if there is no solution here, and that would suck.
thanks.
ARHD 34.0 is Android 5.0 based (software 4.16); not 4.4.4 (software 3.x). You might be experiencing this issue due to firmware mismatch. My advice would be to flash the US Dev Edition RUU or firmware zip to get on the 4.x based firmware, and see if that helps. You can try the Euro 4.16.401 firmware, but my experience the US Dev Edition (4.16.1540) plays better on AT&T (as its designed to work on AT&T's network).
Even with the proper firmware, some folks have also had some random network issues running an "international" based ROM on AT&T's network. Most notably losing Google services while on LTE (possibly due to build.prop differences). So its possible your LTE issue may be related. Not to knock the ROM developers, but devs from Europe and other regions often aren't that familiar with the nuances of AT&T's network.
So if being on the proper firmware still does not resolve the issue, it might be the ROM itself doesn't play well with AT&T in your location.
Thanks Redpoint-
I hadn't considered that and am also shy to using the Dev RUU due to brick risk but will reassess that. (I have to convert my device to GPE to put that on don't I?) I recall some warnings about bricking if I change the ID of my phone and apply the wrong RUU or something- but I'll have to refresh myself on those caveats. Would have been so much simpler if AT&T had just released Lollipop but who knows how long I'd be waiting for that.
Thanks again.
jeremyenos said:
Didn't realize it at first, but I am no longer able to receive calls while on LTE. (works fine for data, and outgoing calls)
If I force it down to 3g, I'm fine. I also noticed that outgoing calls automatically kick it down to 3g- then learned that LTE calls are not an option yet for AT&T. .
Click to expand...
Click to collapse
Voice over LTE (VoLTE) not being available yet should not be the cause. VoLTE is not currently available on most carrier worldwide. Its a very new technology, and deployment is still ongoing in most regions. Only a few Asian countries currently have VoLTE.
That being the case, voice calls should be kicking down to 3G. The lack of VoLTE should not prevent you from receiving calls. As mentioned, I believe the issue is either a firmware mismatch, or ROM not playing well on AT&T's network.
---------- Post added at 10:50 AM ---------- Previous post was at 10:46 AM ----------
jeremyenos said:
Thanks Redpoint-
I hadn't considered that and am also shy to using the Dev RUU due to brick risk but will reassess that. (I have to convert my device to GPE to put that on don't I?) I recall some warnings about bricking if I change the ID of my phone and apply the wrong RUU or something- but I'll have to refresh myself on those caveats. Would have been so much simpler if AT&T had just released Lollipop but who knows how long I'd be waiting for that.
Click to expand...
Click to collapse
No, you don't need to convert to GPE to run Dev Edition RUU. Dev Ed not the same as GPE. Dev Ed is Sense, just without the AT&T branding. The US Dev Edition Lollipop ROM is actually pretty sweet (what I am currently on via RUU).
You won't likely brick the device with RUU unless you run an RUU for the wrong device.
Changing CID is safe as long as you type the command properly.
There is always some tiny risk of a brick if you mess with things s-off, and flashing hboot and radio. But I wouldn't say the risk is any more than installing the OTA (which also replaces hboot and radio) as long as you follow instructions carefully, and do the proper research, and take the proper care while performing the steps.
So thanks redpoint for the advice-
Dev edition RUU installed just fine, and updated my radio and hboot as I had hoped. I go to restore ARHD, and it fails though... even fresh install of ARHD fails with some symlink error. I think after reading up on it that this is due to partition resizing that Dev edition does. So now I can't seem to find a way to get ARHD back on the device. I have no idea what to do to the partitions to restore them to something ARHD can use again if that's the problem, and I can't find anything about it on XDA or elsewhere.
Kind of surprised by this if I'm on the only one hitting the issue... all of the issues. To my knowledge, without a radio update, no AT&T m8 in America with ARHD 34 is going to be receiving incoming calls with LTE enabled. The only way to get a radio update is to use an RUU- of which dev edition is the only one. AT&T/HTC only releasing the 4.4.4 RUU for right now it seems, without the radio and hboot update.
Maybe I've got this all wrong somehow... I can't be the only ARHD m8 AT&T LTE USA user that wants to have incoming calls right? How has anyone else accomplished this?
Stuck with Cyanogenmod for now... slower, less stable than ARHD.
jeremyenos said:
Dev edition RUU installed just fine, and updated my radio and hboot as I had hoped. I go to restore ARHD, and it fails though... even fresh install of ARHD fails with some symlink error. I think after reading up on it that this is due to partition resizing that Dev edition does. So now I can't seem to find a way to get ARHD back on the device. I have no idea what to do to the partitions to restore them to something ARHD can use again if that's the problem, and I can't find anything about it on XDA or elsewhere.
Click to expand...
Click to collapse
You're still misunderstanding about Dev Edition (DE) versus GPE. Only GPE has different partitioning from Sense. DE is still Sense, and has the same partitioning scheme as the stock AT&T (and other carrier) Sense setup.
Don't know why you are having the issues restoring ARHD nandroid and even flashing ARHD. Wipe cache and try to re-install TWRP or try a different version. Then try a "clean install" (factory reset in TWRP) of ARHD.
Or you might have a case where the DE firmware does not play well with ARHD. You can try the 401 firmware, for which ARHD is based. But this might cause as many issues as it solves, as the US DE firmware usually plays better with AT&T's network than the international firmware. But it might be worth a try.
---------- Post added at 11:31 AM ---------- Previous post was at 11:27 AM ----------
jeremyenos said:
The only way to get a radio update is to use an RUU- of which dev edition is the only one. AT&T/HTC only releasing the 4.4.4 RUU for right now it seems, without the radio and hboot update.
Click to expand...
Click to collapse
Since you are s-off, you can flash any carrier's M8 firmware, or flash the radio independently. Although a side note that you should stay away from flashing anything for CDMA (Sprint & VErizon) M8's or dual SIM M8.
If you mean there is no updated LP radio intended for AT&T, aside from the DE RUU that you are currently on; than yes that is correct.
Has this been solved? Im experiencing the same thing. I updated my m8 to the latest at&t lollipop ota. And installed xenon rom. Now i just noticed im not getting any calls. Wife is pissed lol
redpoint had my problem pegged. Just had the wrong rom w/o the radio update I think. I needed to get the developer edition from here. After applying it, I could put ARHD back on and all was good. It's been awhile, but that's how I roughly remember it.
simpl3lang said:
Has this been solved? Im experiencing the same thing. I updated my m8 to the latest at&t lollipop ota. And installed xenon rom. Now i just noticed im not getting any calls. Wife is pissed lol
Click to expand...
Click to collapse
There is no true fix for this, that I know of. Only workaround: turn off LTE in phone settings, or contact AT&T to have HD Voice (what AT&T is calling Voice Over LTE) turned off for your account. The latter is probably the best workaround if you want to continue using non-ATT ROMs; since it allows you to still utilize LTE speeds for data, and HD Voice only works if both parties have devices that support the feature (and many folks don't at this time).
redpoint73 said:
There is no true fix for this, that I know of. Only workaround: turn off LTE in phone settings, or contact AT&T to have HD Voice (what AT&T is calling Voice Over LTE) turned off for your account. The latter is probably the best workaround if you want to continue using non-ATT ROMs; since it allows you to still utilize LTE speeds for data, and HD Voice only works if both parties have devices that support the feature (and many folks don't at this time).
Click to expand...
Click to collapse
thank you for the quick reply. i will call at&t right now. and i will throw in an update.
redpoint73 said:
There is no true fix for this, that I know of. Only workaround: turn off LTE in phone settings, or contact AT&T to have HD Voice (what AT&T is calling Voice Over LTE) turned off for your account. The latter is probably the best workaround if you want to continue using non-ATT ROMs; since it allows you to still utilize LTE speeds for data, and HD Voice only works if both parties have devices that support the feature (and many folks don't at this time).
Click to expand...
Click to collapse
Update: i called, and the nice customer service lady couldnt turn off the feature. She said its part of billing something something. Damn what to do now besides turning off lte.
Should i input some apn or something? Revert radio image to an older one? Go back to kitkat?
simpl3lang said:
Update: i called, and the nice customer service lady couldnt turn off the feature. She said its part of billing something something. Damn what to do now besides turning off lte.
Click to expand...
Click to collapse
Just call again, the CS rep probably just didn't know what they were talking about. I think another user mentioned you need to talk to tech support, not the front line CS reps. Turning off HD Voice with AT&T was confirmed by at least 2 other XDA members to work.
simpl3lang said:
Should i input some apn or something? Revert radio image to an older one? Go back to kitkat?
Click to expand...
Click to collapse
Swapping radios or APNs probably won't help. Not sure about reverting to Kitkat.
redpoint73 said:
Just call again, the CS rep probably just didn't know what they were talking about. I think another user mentioned you need to talk to tech support, not the front line CS reps. Turning off HD Voice with AT&T was confirmed by at least 2 other XDA members to work.
.
Click to expand...
Click to collapse
+1000000000000000000
i guess third time calling is the charm. the first 2 calls i made, they said they couldnt turn it off, saying it was restricted. but the third person i spoke to made me turn my phone off and when it restarted it worked. i can receive calls now.. he said he turned the hd lte off in his side by putting me back to the settings i had before hd voice was added.
thanks again.
edit:
i was actually looking at this prior to making my third call to at&t. maybe it could help others. worth a try? do it at your own risk...
If for some reason the HD Voice Calling option is disabled or inaccessible on your phone after updating to Android 5.1, then you can try the following steps to fix the issue.
Navigate to Settings > More > Cellular Networks and enable the toggle switch for Enhanced 4G LTE Mode. However, if the toggle is missing then follow the steps provided below:
1.Launch the Dialer app on your phone, and dial *#*#4636#*#*.
2.Choose Phone information.
3.Enable or select VoLTE Provisioned Flag.
4.Restart the phone.
5.Go to Settings " More " Cellular networks and toggle the switch for Enhanced 4G LTE Mode, and the HD Voice calling feature should now be activated on your device running Android 5.1.
i got as far as rebooting my phone but the toggle was still missing.
Was working on Insert Coin 4.4.4, flash to OTA 4.16 5.0.2 works fine then I flashed to latest Insert Coin 7.1.9 5.0.2 I tried the following step suggested on post #13 don't see option #3 after click Choose Phone Info.
By calling AT&T turn off HD Voice you'll sacrifice anything?
First call attempt, att technical rep had me turn off phone, 1min later turn it back on and it's working now! Yay!!!
Sent from my HTC One_M8 using Tapatalk
@simpl3lang @redpoint73 Soo glad I found this thread, this was driving me nuts on my m9 running ARHD. When I called ATT they were able to take care of it and turn it off. I cannot find the setting under the *#4636#*, nor under phone settings in ARHD, Is this a setting that developers forget to include in their ROMS?
tc3sean said:
@simpl3lang @redpoint73 Soo glad I found this thread, this was driving me nuts on my m9 running ARHD. When I called ATT they were able to take care of it and turn it off. I cannot find the setting under the *#4636#*, nor under phone settings in ARHD, Is this a setting that developers forget to include in their ROMS?
Click to expand...
Click to collapse
The reason you won't find it in settings, is that "HD Voice" (or I forget what the actual toggle is called) is not a feature on non-ATT ROMs. Its an ATT-specific branding of what is more broadly being calling "Voice over LTE" or VoLTE. Further, most (or at least many) carriers worldwide have not started deploying VoLTE yet (or just starting to do so), so that is another reason why you won't see such a toggle in settings on most ROMs.
Even if such a toggle was present, I'm skeptical whether it would resolve the problem being discussed. It seems there is something unique in the way that ATT is deploying VoLTE, that is screwing with "international" based ROMs. So my hunch is that unless the ATT-specific tweaks are applied, you would still have the voice/SMS issue on LTE.
redpoint73 said:
The reason you won't find it in settings, is that "HD Voice" (or I forget what the actual toggle is called) is not a feature on non-ATT ROMs. Its an ATT-specific branding of what is more broadly being calling "Voice over LTE" or VoLTE. Further, most (or at least many) carriers worldwide have not started deploying VoLTE yet (or just starting to do so), so that is another reason why you won't see such a toggle in settings on most ROMs.
Even if such a toggle was present, I'm skeptical whether it would resolve the problem being discussed. It seems there is something unique in the way that ATT is deploying VoLTE, that is screwing with "international" based ROMs. So my hunch is that unless the ATT-specific tweaks are applied, you would still have the voice/SMS issue on LTE.
Click to expand...
Click to collapse
I can confirm that getting AT&T to turn off HD Voice fixed the issue with me. I installed SkyDragon v10. I had to call twice and go through a lot of crap to get them to do it. The last guy told me he was going to put the "opt-out" code on my number, but that wasn't technically supposed to do it. He said he was putting in that I had "requested" to opt-out (I was taking the line that it just stopped working, as I didn't want to have to deal with any fallout about having rooted and flashed my phone, perhaps that wasn't necessary, idk). So, I think you might take the short cut by saying that you want to opt out of HD voice, and that your "Brother-in-law" just did it, so you know it works. If you stick to your guns, and ask for a technical person and don't let them say no to that, you can definitely get it done.
Thanks to all of the participants on this thread I am out of a tight spot and would like to offer up a few more observations that may be helpful to the next person.
I had an LG G3 running CM13 20160504 that became unstable and I had to replace with my wife's old HTC One m8 also running CM13 20160504 (also tried 20160510 and 20160511) which, like the other phones discussed in this thread, did not get incoming calls, in fact calls did not even roll over to my Google Voice number.
Thanks to this thread I tried forcing the phone to 3g, found that I got calls and then got AT&T to turn of VoLTE (aka HD Voice) and now I can get calls while running with LTE data.
Rather than a fire-hose of details I'll just say that it seems that the G3 would get incoming calls on LTE, and I would not get the first ring then it would ring on what the caller perceived as the second ring. Whenever I was on a call I would note that I was running in 3G, after the call it went back to LTE. I assumed that it was a bandwidth issue but now I think in that lag between the callers first ring and my first ring the phone was negotiating down to a 3G connection like an old school high speed modem negotiating a call with a slower modem (anyone remember those days?). It looks like my HTC does not have the ability to negotiate down or that it was been somehow hardwired not to as there is a flag in the test menu (*#*#4636#*#*) marked "TURN OFF VOLTE PROVISIONED FLAG" which has no effect, i.e. I can press it and the is a visible deflection indicating that the phone knows that the button was pressed but the button text does not change to indicate that a toggle has been effected, calls continue to not ring and even rebooting after pressing does not make any difference.
In summary, having AT&T turn off HD Voice has me working fine with the HTC On m8 on CM13 and I am grateful to all of you for the conversation that got me out of that corner.