Database Develop

Atrix HD - Having intermittent signal loss using Straight Talk.

The wife and I have Atrix HD phones that we bought used but in great condition a couple months ago. We purchased the Straight Talk at&t compatible micro sim kits from walmart.com and set up our service. We previously had Samsung Captivates also on Straight Talk and they worked flawlessly. I put in my APN settings and I get data and MMS perfectly but occasionally I get a red triangle where my signal bars should be and my phone says "Emergency Calls Only" and I will wait 30 seconds or so and my signal returns. There is no steady decline in signal that leads up to this. It goes from like 4 bars to a red triangle with a cross inside it.
I live in a fair sized town and have always had 3 or more bars of at&t service with phones in the past so I do not think its an issue with poor coverage. I am attaching pictures of my APN settings.
Any help would be appreciated.

Applehater87 said:
The wife and I have Atrix HD phones that we bought used but in great condition a couple months ago. We purchased the Straight Talk at&t compatible micro sim kits from walmart.com and set up our service. We previously had Samsung Captivates also on Straight Talk and they worked flawlessly. I put in my APN settings and I get data and MMS perfectly but occasionally I get a red triangle where my signal bars should be and my phone says "Emergency Calls Only" and I will wait 30 seconds or so and my signal returns. There is no steady decline in signal that leads up to this. It goes from like 4 bars to a red triangle with a cross inside it.
I live in a fair sized town and have always had 3 or more bars of at&t service with phones in the past so I do not think its an issue with poor coverage. I am attaching pictures of my APN settings.
Any help would be appreciated.
Click to expand...
Click to collapse
I'm having the exact same issue since switching to to the 4G LTE micro sim. It only seems to happen on mine when I'm connected to Wifi though. I get the red triangle intermittently. This never happened to me until I went from the old sim to the new one. Can't find anything on it yet.

same thing
The same thing is happening to me here as well but using a Net10 LTE sim card (same as straight talk basically). I notice it the most after I complete a phone call. It takes a minute or two to regain service again. This is really annoying. Would like to see a solution to this problem.

So I worked with Straight Talk support for about 5 days, back and forth, bounced to several reps throughout and nothing substantial has come of it. It seems a little better after they made "adjustments" to my account as they put it, but I still get disconnected from mobile data when on wifi.
Don't get me wrong, their support people were very responsive and seemed to genuinely want to help me, but in the end they said "your ticket has been open for more than 24 hours so it has been closed. If you continue to have issues please open a new ticket." Anyone else have any luck on this?

I also was having this problem found that if you edit existing att apn (phone needs to be rooted)with sqlite editor it seems to work fine.
tether also works fine this way.I am still not able to get lte to work with straight talk even with new sim.

Just to follow up. As usual, it seems with ST support, one rep tells me they have some things they can try once I call back on another line and then I get a new rep who says nothing can be done until 10 people complain about the exact same issue I'm having. I'm assured this is an isolated incident...
I went ahead and purchased a new SIM card (looks different than the first LTE card I had) in case I had a faulty SIM. Worked flawlessly for a day and now it's back to the same issue of cutting out completely throughout the day.

same problem here on wifi get red triangle (especially after phone call).
More since i switched from 4g sim card to lte sim noticed that data disconnect from time to time like make impossible to watch video flawlessly...
with old 4g was yes only 4g but never loss a bite....could watch anything also streaming tv.....now it is impossible.....
the end of the month going to switch to old sim and see if the problem is in the new sim cards they tried may be to limit access or is in the new service doesn't matter what sim card you possess..
we'll see...

htchd2fix said:
same problem here on wifi get red triangle (especially after phone call).
More since i switched from 4g sim card to lte sim noticed that data disconnect from time to time like make impossible to watch video flawlessly...
with old 4g was yes only 4g but never loss a bite....could watch anything also streaming tv.....now it is impossible.....
the end of the month going to switch to old sim and see if the problem is in the new sim cards they tried may be to limit access or is in the new service doesn't matter what sim card you possess..
we'll see...
Click to expand...
Click to collapse
Switching to my old sim was my first thought to. However when I tried it didn't work. I called ST and they informed me that once you switch sims, the old one can never be reactivated. On top of that they don't offer the non LTE sims anymore. Such a pain. Hope you have better luck though.

pentjaksilat8 said:
Switching to my old sim was my first thought to. However when I tried it didn't work. I called ST and they informed me that once you switch sims, the old one can never be reactivated. On top of that they don't offer the non LTE sims anymore. Such a pain. Hope you have better luck though.
Click to expand...
Click to collapse
Some one could correct me if I'm wrong here but I'm pretty sure this is a result of ROMS using a 4.4 rom. Modem crashes. If you want to test it run a Stock ROM... If you are already using a completely stock ROM then Idk what to tell you. But same thing happens to me using any version besides stock. And yes only when on WiFi

metalmike6 said:
Some one could correct me if I'm wrong here but I'm pretty sure this is a result of ROMS using a 4.4 rom. Modem crashes. If you want to test it run a Stock ROM... If you are already using a completely stock ROM then Idk what to tell you. But same thing happens to me using any version besides stock. And yes only when on WiFi
Click to expand...
Click to collapse
I'm on a 100% stock ROM, I haven't unlocked my boot loader, just rooted.

pentjaksilat8 said:
I'm on a 100% stock ROM, I haven't unlocked my boot loader, just rooted.
Click to expand...
Click to collapse
Then unlock your bootloader and try flashing different radios from the different stock fastboots we have. Depending on the fastboot I can have next to none or almost full in my bedroom. For me, ATT JB is in the middle, JB Mex Retail is the best, Bell ICS is the worst. ATT ICS was about the same as ATT JB.

skeevydude said:
Then unlock your bootloader and try flashing different radios from the different stock fastboots we have. Depending on the fastboot I can have next to none or almost full in my bedroom. For me, ATT JB is in the middle, JB Mex Retail is the best, Bell ICS is the worst. ATT ICS was about the same as ATT JB.
Click to expand...
Click to collapse
For the time being, I just switched to Aio and so far so good with LTE coverage and no disconnecting issues. If they return I'll try different radios as you suggested.

So I've been with Aio for about a week now and everything is working great (knock on wood). I've had 2 mobile data drops at work with Wifi turned on, but they only lasted for a second and I do have really bad reception here inside the building. Outside of that no issues at all so far. I'll update if anything changes.

SMS / Text Messages Sporadically Don't Come In

I have an unlocked british d5803 that I am using on ATT in the states. Every once in awhile it just stops receiving SMS. The SMS will eventually come in all at once at some point in the future, or if I restart my phone they will all come in. I haven't been able to replicate the issue. It seems to just happen at random. Today was the third time I have noticed it happen.
Has anyone else noticed this issue? At least I'm not losing any texts, they come through eventually, but it is still a real pain.

Ive been having the same issue. For me, my messages wont send out randomly?

I'm having the same problem as well. I believe that when 4G LTE service gets dropped, the phone doesn't allow texts/calls to come in through the lower bands. The texts eventually come in a few hours later all together. I'm going to try to do a sony software repair or return the phone.
I wish I could love this phone, but i just can't with this issue.

I would suggest downloading the advanced signal status app and comparing it with other phones.

lun731 said:
I'm having the same problem as well. I believe that when 4G LTE service gets dropped, the phone doesn't allow texts/calls to come in through the lower bands. The texts eventually come in a few hours later all together. I'm going to try to do a sony software repair or return the phone.
I wish I could love this phone, but i just can't with this issue.
Click to expand...
Click to collapse
That doesn't sound good. Where did you learn about this? I always tend to blame the network for any missing text problems rather than the phone. Last week, for example none of my texts were getting sent. So I tried my GF's iPhone on the same network and same thing was happening, so I assumed T-Mo was having a hiccup. It worked 5 minutes later.

I would use the FlashTool and install the US version software and give that a try. There might be some changes in the radio part of the US software to better connect to the towers.

I am just speculating. My work phone is also on AT&T so I have been using it to troubleshoot. I don't believe the issue to be a network problem.
I'm going to try flashing the US firmware as mentioned below. As soon as I comfortably figure out how. .

bigneck said:
Ive been having the same issue. For me, my messages wont send out randomly?
Click to expand...
Click to collapse
I've only had an issue with receiving SMS, never sending them. I think. I'll pay more attention, it hasn't happened again since I posted this. Maybe I just need to do a fresh power cycle on the phone every couple of days. Sucks, but wouldn't be the end of the world. It's a shame, this phone is perfect in every other way.
FSRBIKER said:
I would use the FlashTool and install the US version software and give that a try. There might be some changes in the radio part of the US software to better connect to the towers.
Click to expand...
Click to collapse
Can I do this if I'm unrooted? I don't want to lose my drm keys.

FSRBIKER said:
I would use the FlashTool and install the US version software and give that a try. There might be some changes in the radio part of the US software to better connect to the towers.
Click to expand...
Click to collapse
Is this what you are referring to? http://forum.xda-developers.com/z3-compact/general/list-stock-firmwares-d5803-d5833-t2906706
Thanks again for your help

I am researching the Z3 C for use on TMobile/Metro and
GREATLY appreciate this honest description of this Problem.
AT&T nor Tmobile dko NOT seem to have this problem with Networks-it would be widely reported if they did.
I never had it on MetroPCS or MetroPCS Tmobile after Merger on Carrier LG Motion 4 G.
My theory is the Data Transfer is not automatically
reassigned or transferred to the lower speed 3G Bands for some reason, I am not a tech or,Dev so guessing that
Sony does not have Software Optimization tweaks that
we take for granted since they are not on many Carriers .
Guessing that the TMobile Z3 and Verizon Z3v will or have been optimized or will be for no data pause, text pause etc.
I can NOT have this because meetings are sometimes adjusted via text, phone used for Business.
Alpha probably even unlocked will have fewer issues , but never used an unlocked phone-
For RELIABLE texts, data, do you NEED a Carrier Branded, Optimized Phone.?

No GSM signal but ample of WCDMA...

first of all thanks for sharing such useful tut....though it didn't work for me cause I can't enter DIAG mode.
second of all I'm having a little bit of different issue with my Rooted HTC one M7.
My phone recognizes WCDMA signal absolutely fine( 3G data connection is flawless) but it won't detect/recognize GSM signal no matter how many different cell towers I go to. when I switch to "WCDMA" or "GSM/WCDMA auto" mode it receives good signal, but when I switch to "GSM" only mode then it turns out to be "emergency calls only" thing(I tried this with 10 different vendor SIM cards). To make sure my SIM hasn't got any issue I tried it in different phone which did good. I can't say that if it has Hardware issues, but to clear my doubt I went to Authorized HTC service center. The front desk engineer guy took my phone to the technician and came back in a minute and told me that motherboard needs to be replaced (can they really diagnose phone's H/W in a minute?? also my phone's rooted and 18months old so no warranty). That MB thing costs around 80% of mobile's current market price so I came back with faulty HTC one m7 in my pocket. And here I am... I thought I would ask some experts in this community to give it a try on software side otherwise the phone is already 90% useless as there no coverage to WCDMA in my house.
Now you may be thinking that it is Service Provider's coverage issue, but hey I tried using my SIM into two other phones at the same place. Out of which one was "Nokia Lumia 820" and the other one was 6 year old "Nokia 1110"(though it doesn't support micro SIM, I inserted it carefully to make proper copper contacts) and my SIM worked fine with GSM signal in both the phones, as of course 1110 works only with GSM.
I can't believe I'm having this weird issue and now I can't rely on HTC's service centers. So any help is gonna be really useful.
I appreciate your time to read this and thanks in advance.
Have good time ahead.
-mayur

mayurb4 said:
first of all thanks for sharing such useful tut....though it didn't work for me cause I can't enter DIAG mode.
second of all I'm having a little bit of different issue with my Rooted HTC one M7.
My phone recognizes WCDMA signal absolutely fine( 3G data connection is flawless) but it won't detect/recognize GSM signal no matter how many different cell towers I go to. when I switch to "WCDMA" or "GSM/WCDMA auto" mode it receives good signal, but when I switch to "GSM" only mode then it turns out to be "emergency calls only" thing(I tried this with 10 different vendor SIM cards). To make sure my SIM hasn't got any issue I tried it in different phone which did good. I can't say that if it has Hardware issues, but to clear my doubt I went to Authorized HTC service center. The front desk engineer guy took my phone to the technician and came back in a minute and told me that motherboard needs to be replaced (can they really diagnose phone's H/W in a minute?? also my phone's rooted and 18months old so no warranty). That MB thing costs around 80% of mobile's current market price so I came back with faulty HTC one m7 in my pocket. And here I am... I thought I would ask some experts in this community to give it a try on software side otherwise the phone is already 90% useless as there no coverage to WCDMA in my house.
Now you may be thinking that it is Service Provider's coverage issue, but hey I tried using my SIM into two other phones at the same place. Out of which one was "Nokia Lumia 820" and the other one was 6 year old "Nokia 1110"(though it doesn't support micro SIM, I inserted it carefully to make proper copper contacts) and my SIM worked fine with GSM signal in both the phones, as of course 1110 works only with GSM.
I can't believe I'm having this weird issue and now I can't rely on HTC's service centers. So any help is gonna be really useful.
I appreciate your time to read this and thanks in advance.
Have good time ahead.
-mayur
Click to expand...
Click to collapse
Have you tried adding the APNS as you were advised?

Yes, I did try adding different APN's. No success.
zelendel said:
Have you tried adding the APNS as you were advised?
Click to expand...
Click to collapse
Yes, yes I did try that.
With losing all the hope in my phone, finally today I handed over my phone to a local technician for looking over Hardware side issues.
@zelendel, thank you for your kind suggestion and I appreciate your concern in this matter.
wish you a very good time ahead.
-mayur

How do you fix Not Registered On Network?

So as of saturday my unlocked TMobile Note 4 stopped working as a phone, and won't let me make calls.
Information:
-Was on Dr. Ketan L3 version of his rom when it stopped working
-Using the N910T on AT&T
-IMEI is fine and not damaged, both numbers match (using *#06#)
-It shows bars, but when I go to make a call "Not Registered On Network"
What I've Done:
-Flashed Stock Firmware via Odin (Autoboot, and F.Time Rest checked)
-Factory Reset after odin flash
-Checked APN
-Set on LTE/WCDMA/GSM
-Searched for Networks, finds them, but when I choose AT&T it takes forever and then finally kicks me out and then in notifications, I get the "Not Registered to Network"
-Did the remove the battery thing, and removed sim
-Went to AT&T and got a new sim, worked for 1hr (sporadically) and then went back to "Not Registered on Network"
-At the store I was on phone with AT&T tech trying to troubleshoot the problem and that is when it was working shortly
-Called T-Mobile and checked to see if they blocked my IMEI number, nope they didn't, couldn't help me out further than that
-AT&T was showing that it was a Note 4 so not having that coming up as a Blackberry issue that some reported, so that's not it
-*#0011# shows service limited, but it is unlocked and everything is fine, the IMEI is good, and all is well but the limited service
-Put it in Airplane mode and woke it back from there after 5+minutes
-cleaned the connectors on the sim (new sim anyways so shouldn't really need them)
I'm running out of options, the only thing I can think of being the problem is that I might have started out using this phone on COD2, and when I flashed a COG2 firmware it didn't like that and so my phone's account settings didn't fully transfer.
Also I was messing around with the bands settings (*#2263#) what should they be on? Automatic, LTE/GSM only, or what?

Settings should be on automatic. One more thing to try is go for a drive with the phone, at least 5 miles from your house, and see if it does this when connected to other towers. I had this same issue years ago and it turned out to be a malfunctioning tower by my house.
If it still does it on other towers, then it may be hardware-related

kabuk1 said:
Settings should be on automatic. One more thing to try is go for a drive with the phone, at least 5 miles from your house, and see if it does this when connected to other towers. I had this same issue years ago and it turned out to be a malfunctioning tower by my house.
If it still does it on other towers, then it may be hardware-related
Click to expand...
Click to collapse
Thanks, yeah it kicks in randomly for like a minute and then dies, I take it to my parent's house (about 10 miles away) and along the way I get a good signal, but then when I reach their house, back to nothing. I was using it just fine the week prior. I partially blame Dr. Ketan, ever since installing his rom, I had multiple issues. I since uninstalled it and tried going back to stock. Any idea on what a good "safe" band setting is? I have that settings set to automatic, but if there was a good "safe" band that would be great. A common LTE tower. Even when I do connect or get connected, I can't register on that network, my phone won't let me. I've tried that. The bars drop to zero. I damaged my antenna wire (white one) and I just replaced it with a new one I purchased, but the hacked together one seemed to be doing the same quality job as the new one is. It shows the signal, but as soon as you try tying it down to a network it rejects it. I was afraid that when I flashed the stock image via odin it removed the unlock, but it was still there. I just hate that now I have a $500 pda, when it was a phone and now i'm relegated to using a f*ing flip phone.

i think your antenna cable is damaged. the only way to know that is be close to a tower, and see if your work or not.

bought and replaced with new ones, I get full bars, in my bedroom, but apparently they're tied to Tmobile since when I try to register it to AT&T they magically disappear, but when I close the app, they come back at the same strength level. I can't register them to Tmo since the sim. Yet my phone is telling me it's unlocked (*#0011#), IMEI = PASS, 1;

I think the prob is due to the different frequencies.
Your baseband would not be tied to a rom(ie Dr Ketan) Unless that rom contains Modem.bin
Your apn needs to be att if that's your Sim obviously.
International version has a different chipset. .. I know it's not your case. .
But it's open to any Sim. ..
I can say this.. I have a N2 unlocked (tmob) I run an Att Sim it works but the sig is really spotty... COD6/ COG2 may not be lining up frequency wise with your att Sim. ..
Try rolling your baseband back even further. .
Flashvetrin

Any clue on to what i should use for best results? Like 850/1900 or 900/2100? What is a good LTE band? Where could I find a map of LTE bands used by carriers, I know how to get to that secret menu and manually change it to see if I get better results?

dcoke said:
Any clue on to what i should use for best results? Like 850/1900 or 900/2100? What is a good LTE band? Where could I find a map of LTE bands used by carriers, I know how to get to that secret menu and manually change it to see if I get better results?
Click to expand...
Click to collapse
Well I would think automatic is out for sure.. the other prob would be after reboot the chipset will search for the default.. but I could be wrong.
I do not know what the numbers would be for band identification.
You may get lucky when calling Att and ask for someone in a higher tier. To give you some numbers for frequincies .
But you have ruled out hardware correct??
By putting a tmob Sim in????
Cuz I know you posted you did antenna work..
And I do know you said you get bars then it fades..
The fact it fades and doesn't lock into even a G band for example. Just leads me to believe the apn can't lock down based on the frequincie and the built in lte chipset...
It would be nice to just flash an att modem wouldn't it?? But don't even think about it.. lol you'll soft brick..
I wish I had a better solid answer you. You may just start testing those different bands and see if you get closer to a lock.
Flashvetrin

U rock, lol. Thx man
My Tricked Out N910P

But what could have happened that made it crap out like that since it was working just fine beforehand for 2 solid months on custom roms and what not? That's the frustrating part, I've been flashing different modems on my phone, but none have been successful. Apparently there are 3 different N910T, how do you know which ones to play with? I flashed N910T(3) bands, that failed, I did try N910A, obviously failed. Then I lost my IMEI number, got terrified, tried reflashing EFS in TWRP, nothing. Then reflashed COG2 bands, it came back. Is there an app on the Playstore that would definitively tell you if your network chip is damaged? I wouldn't know what to look for.
Have you taken apart the Note 4, what are all those contact points, are those antenna things? One of those were damaged, they're like folded metal spring boards with gold tips (same kind of thing that is used to install a qi receiver, same design). I took my tweezer and fixed it, but could that be the culprit, since on the surface, it seems like the network is fine. Works really well in WCDMA, but not much else. I was able to make calls using GSM only, but my signal was 1 bar and the audio quality was questionable, so I left it alone for 10 minutes on that hoping it would force a reconnect. This is frustrating, since I wasted $500 on this phone and not having it work after two months means now I'm back to a featureless phone.
Thanks for your advice thus far. Flashing different modems hasn't been working out well, I just wished I could remember what baseband version the guy had the phone on when I first got it? I thought it was COD6, it was definitely on Lollipop, but if it's a 910T(2) would I know, how would I know?
How do you flash NON_HLOS and modem.bin at the same time in Odin? I know Modem does bands, but what does Non-Hlos do? I thought i read LTE, so if those aren't in sync and on two different versions could that be the issue? I extracted them from the full TAR firmware files.

dcoke said:
But what could have happened that made it crap out like that since it was working just fine beforehand for 2 solid months on custom roms and what not? That's the frustrating part, I've been flashing different modems on my phone, but none have been successful. Apparently there are 3 different N910T, how do you know which ones to play with? I flashed N910T(3) bands, that failed, I did try N910A, obviously failed. Then I lost my IMEI number, got terrified, tried reflashing EFS in TWRP, nothing. Then reflashed COG2 bands, it came back. Is there an app on the Playstore that would definitively tell you if your network chip is damaged? I wouldn't know what to look for.
Have you taken apart the Note 4, what are all those contact points, are those antenna things? One of those were damaged, they're like folded metal spring boards with gold tips (same kind of thing that is used to install a qi receiver, same design). I took my tweezer and fixed it, but could that be the culprit, since on the surface, it seems like the network is fine. Works really well in WCDMA, but not much else. I was able to make calls using GSM only, but my signal was 1 bar and the audio quality was questionable, so I left it alone for 10 minutes on that hoping it would force a reconnect. This is frustrating, since I wasted $500 on this phone and not having it work after two months means now I'm back to a featureless phone.
Thanks for your advice thus far. Flashing different modems hasn't been working out well, I just wished I could remember what baseband version the guy had the phone on when I first got it? I thought it was COD6, it was definitely on Lollipop, but if it's a 910T(2) would I know, how would I know?
How do you flash NON_HLOS and modem.bin at the same time in Odin? I know Modem does bands, but what does Non-Hlos do? I thought i read LTE, so if those aren't in sync and on two different versions could that be the issue? I extracted them from the full TAR firmware files.
Click to expand...
Click to collapse
Heres
A simple method for COD6
And try odin 3.07
I need to think about this some more and get back to you...
This is a partial firmware.. it consists of the modem and bootloader COD6.
Also to rule out damage if you can get a T Mobile Sim put it in the device and see if it locks down a signal....
Flashvetrin

That was my next move, not having any real income but disability and little coming from that, I thought that was the next logical step too. I'll get a tmobile to go sim and try it see if it can't lock on to that, and see if that doesn't set it on the right path. Have you heard of other people having COG2 issues on AT&T unlocked? Maybe that was the problem, something there broke the connection. I don't know, but whatever it is, I can't thank you enough, you've at least given me more options to try that I couldn't think of on my own. I'll try that file.

dcoke said:
That was my next move, not having any real income but disability and little coming from that, I thought that was the next logical step too. I'll get a tmobile to go sim and try it see if it can't lock on to that, and see if that doesn't set it on the right path. Have you heard of other people having COG2 issues on AT&T unlocked? Maybe that was the problem, something there broke the connection. I don't know, but whatever it is, I can't thank you enough, you've at least given me more options to try that I couldn't think of on my own. I'll try that file.
Click to expand...
Click to collapse
You are the first of this kind that I'm aware of.. in regards to this issue..
Make sure you read the detail in if your device bootloops, to reboot recovery and flash the Rom.. if you want flash the Rom in the op that I've linked you to.
Wipe sys/dal/cach/data..
And flash it can't hurt.. [emoji16]
I really hope a Tmob Sim and or COD6 gives you results...and good ones at that.. [emoji2] [emoji106]
Flashvetrin

Got the sim card, $65 for that crap, and it didn't work. Called T Mobile customer service, explained my situation and how I was calling on another phone on another carrier and they insisted on calling me back on the broken not working phone. I guess I'm just screwed, and lost $500, which like I said, I can't afford to have. It's just so frustrating. I also tried the COD6 partial firmware, and nothing there also. I'll try t-mobile again. The only and last option I have, if possible, is to try to relock my phone and re-unlock it since there isn't any real way to tell if my GSM is damaged. I think my unlocked status got damaged when my phone upgraded to COG2, and since it's in that weird limbo state I can't use my phone. Do you know how to relock it?
Edit: When I look at my IMEI Number through *#06# it shows that the last two digits (independent of the actual IMEI number, since that matches everywhere) to the right of the "/" as 14, yet through "about device" it shows my imei version as 10. I assume that the 14 in the "06" screen is the version it's reading off the phone, could that be causing the issue? How would you even fix that? I don't know. but thanks again, you've been helpful.

Weird issue with no data while making phone calls

Hell of a story, I apologize in advance for the length, but maybe it'll be intriguing to some of you. Pure Nexus rom as of i think april 23rd?
I have a Nexus 6 that I bought 2 years ago in April on Verizon (purchased from verizon). My contract ran out April 27th, went to AT&T with my girlfriend because I was going to get on her plan to save money on our phone bills. Ported over the number to my N6 fine. But I noticed I only got an H+ symbol, no LTE. I asked the guy if that was normal, he said yes. I got data and could make calls so I figured it was fine. Did some speed tests, 2 mb/down at best. My GF was getting 15-20 in the same spot on her Galaxy S7.
Long part of this story short, the tech they put me on the phone with said it was due to it being a Verizon variant and was not capable of full LTE speeds on AT&T. I went to the Verizon store and asked if they could put me back under Verizon after explaining the problem. He said sure, and then worked up pricing to have my GF switch to Verizon with me instead, and to get a Pixel XL.
So far so good, they had to do a temporary number for me because there's issues porting a number twice in a 24 hour span, but they cleared it up, got my real number ported, happy camper, good speeds. Except this one issue.
Now when I'm on the phone (actual phone call), my data drops. The LTE signal actually disappears, and nothing displays except signal bars. As soon as the phone call is over, it comes back. I never had the problem before this whole back and forth mess. I can't seem to figure out any options to make it not do this. I was thinking about reflashing my rom in case that would help, maybe something got messed up in the switch back and forth to GSM and then back to CDMA?

Morpherios said:
Hell of a story, I apologize in advance for the length, but maybe it'll be intriguing to some of you. Pure Nexus rom as of i think april 23rd?
I have a Nexus 6 that I bought 2 years ago in April on Verizon (purchased from verizon). My contract ran out April 27th, went to AT&T with my girlfriend because I was going to get on her plan to save money on our phone bills. Ported over the number to my N6 fine. But I noticed I only got an H+ symbol, no LTE. I asked the guy if that was normal, he said yes. I got data and could make calls so I figured it was fine. Did some speed tests, 2 mb/down at best. My GF was getting 15-20 in the same spot on her Galaxy S7.
Long part of this story short, the tech they put me on the phone with said it was due to it being a Verizon variant and was not capable of full LTE speeds on AT&T. I went to the Verizon store and asked if they could put me back under Verizon after explaining the problem. He said sure, and then worked up pricing to have my GF switch to Verizon with me instead, and to get a Pixel XL.
So far so good, they had to do a temporary number for me because there's issues porting a number twice in a 24 hour span, but they cleared it up, got my real number ported, happy camper, good speeds. Except this one issue.
Now when I'm on the phone (actual phone call), my data drops. The LTE signal actually disappears, and nothing displays except signal bars. As soon as the phone call is over, it comes back. I never had the problem before this whole back and forth mess. I can't seem to figure out any options to make it not do this. I was thinking about reflashing my rom in case that would help, maybe something got messed up in the switch back and forth to GSM and then back to CDMA?
Click to expand...
Click to collapse
Try to unlock bootloader, install TWRP, root the stock rom, then install lastest bootloader (v72.03) and latest radio (v05.45):
https://forum.xda-developers.com/ne...-nexus-6-recovery-flashable-fastboot-t3066052
Use WUG Fresh NRT tool to accomplish above when hooked to Windows PC via microUSB in 2.0 USB port with correct Windows drivers installed (OK for ADB): https://forum.xda-developers.com/showthread.php?t=1766475

HueyT said:
Try to unlock bootloader, install TWRP, root the stock rom, then install lastest bootloader (v72.03) and latest radio (v05.45):
https://forum.xda-developers.com/ne...-nexus-6-recovery-flashable-fastboot-t3066052
Use WUG Fresh NRT tool to accomplish above when hooked to Windows PC via microUSB in 2.0 USB port with correct Windows drivers installed (OK for ADB): https://forum.xda-developers.com/showthread.php?t=1766475
Click to expand...
Click to collapse
I'm already unlocked, rooted, TWRP'd and using the PureNexus that came out end of april (I haven't flashed the one in may yet). I believe I'm also currently using the latest radio and latest bootloader.
Edit - I actually was not on the most recent radio, but I did flash that, no change.

The volte provisioned flag turned on in the testing menu? I have a setting for enhanced 4g lte mode in my settings, wireless networks/more/cellular networks settings. Did they remove the advanced calling from your account? Just throwing some things out there.

Morpherios said:
Hell of a story, I apologize in advance for the length, but maybe it'll be intriguing to some of you. Pure Nexus rom as of i think april 23rd?
I have a Nexus 6 that I bought 2 years ago in April on Verizon (purchased from verizon). My contract ran out April 27th, went to AT&T with my girlfriend because I was going to get on her plan to save money on our phone bills. Ported over the number to my N6 fine. But I noticed I only got an H+ symbol, no LTE. I asked the guy if that was normal, he said yes. I got data and could make calls so I figured it was fine. Did some speed tests, 2 mb/down at best. My GF was getting 15-20 in the same spot on her Galaxy S7.
Long part of this story short, the tech they put me on the phone with said it was due to it being a Verizon variant and was not capable of full LTE speeds on AT&T. I went to the Verizon store and asked if they could put me back under Verizon after explaining the problem. He said sure, and then worked up pricing to have my GF switch to Verizon with me instead, and to get a Pixel XL.
So far so good, they had to do a temporary number for me because there's issues porting a number twice in a 24 hour span, but they cleared it up, got my real number ported, happy camper, good speeds. Except this one issue.
Now when I'm on the phone (actual phone call), my data drops. The LTE signal actually disappears, and nothing displays except signal bars. As soon as the phone call is over, it comes back. I never had the problem before this whole back and forth mess. I can't seem to figure out any options to make it not do this. I was thinking about reflashing my rom in case that would help, maybe something got messed up in the switch back and forth to GSM and then back to CDMA?
Click to expand...
Click to collapse
The tech may not be wrong as Verizon uses band 13 as their main LTE band and ATT uses band 17
http://www.phonearena.com/news/Chea...on-T-Mobile-and-Sprint-use-in-the-USA_id77933

Morpherios said:
Hell of a story, I apologize in advance for the length, but maybe it'll be intriguing to some of you. Pure Nexus rom as of i think april 23rd?
I have a Nexus 6 that I bought 2 years ago in April on Verizon (purchased from verizon). My contract ran out April 27th, went to AT&T with my girlfriend because I was going to get on her plan to save money on our phone bills. Ported over the number to my N6 fine. But I noticed I only got an H+ symbol, no LTE. I asked the guy if that was normal, he said yes. I got data and could make calls so I figured it was fine. Did some speed tests, 2 mb/down at best. My GF was getting 15-20 in the same spot on her Galaxy S7.
Long part of this story short, the tech they put me on the phone with said it was due to it being a Verizon variant and was not capable of full LTE speeds on AT&T. I went to the Verizon store and asked if they could put me back under Verizon after explaining the problem. He said sure, and then worked up pricing to have my GF switch to Verizon with me instead, and to get a Pixel XL.
So far so good, they had to do a temporary number for me because there's issues porting a number twice in a 24 hour span, but they cleared it up, got my real number ported, happy camper, good speeds. Except this one issue.
Now when I'm on the phone (actual phone call), my data drops. The LTE signal actually disappears, and nothing displays except signal bars. As soon as the phone call is over, it comes back. I never had the problem before this whole back and forth mess. I can't seem to figure out any options to make it not do this. I was thinking about reflashing my rom in case that would help, maybe something got messed up in the switch back and forth to GSM and then back to CDMA?
Click to expand...
Click to collapse
In others countries we don't get the same bands management, then I can't say anything about LTE.
But I'm on PureNexus 7.1.1 and I get the same "issue" about network droppin when calling. When the call starts, my phone turns into don't disturb-mode and recover the network only when the phone call ends.. It doesn't really cut my network connection, but it looks like. It may be rom settings.
However I don't care as long as everything works good, it's just an icon. (how a phone call can be done while network is shutted off ^^)
When I was on the stock ROM, this autumn, 7.1 version of Android did the same thing, loosing data connection while being still connected to the network (but at anytime not just phonecalls). Finding it back some minutes later. That was fixed with 7.1.1. Stock.
Hope that might help you (looks not ) if it's the same problem. May be give an eye to the Rom settings..
Have you tried if your device do the same thing with an another Rom ? (stock for example)

Larzzzz82 said:
The volte provisioned flag turned on in the testing menu? I have a setting for enhanced 4g lte mode in my settings, wireless networks/more/cellular networks settings. Did they remove the advanced calling from your account? Just throwing some things out there.
Click to expand...
Click to collapse
I knew something looked like it was missing. I don't have any enhanced 4g LTE settings in that section. Normally there's a tick box to turn it on there. It's missing. Is that due to them not having it turned on in my account?
Also for everyone else, this problem only started when I tried the whole at&t switch. I was on this rom when I switched and it worked fine before then. I didn't factory reset since then though, wondering if I need to try that.

zelendel said:
The tech may not be wrong as Verizon uses band 13 as their main LTE band and ATT uses band 17
http://www.phonearena.com/news/Chea...on-T-Mobile-and-Sprint-use-in-the-USA_id77933
Click to expand...
Click to collapse
The tech is definitely wrong; since it's a Nexus 6 (presumably XT1103) it has all the possible LTE bands used in the US. There should not have been any issue when switching. I had something similar happen to me, when I just switched to verizon and did the "reset network settings" button, it screwed up my phone so I couldn't use LTE period, I had to reflash the modem in order to fix it. I know you already said you reflashed the modem, but I'm not sure what to suggest. There is absolutely nothing physically wrong or incapable about your phone, just some config got screwed up somewhere along the way. I'd just try to flash as many things as you're comfortable with without losing your userdata. Like modem, bootloader, etc. until your data comes back. If nothing else, press the network settings reset button and flash the latest modem. Make sure your twrp is up to date as well.

BlockOfDynamite said:
The tech is definitely wrong; since it's a Nexus 6 (presumably XT1103) it has all the possible LTE bands used in the US. There should not have been any issue when switching. I had something similar happen to me, when I just switched to verizon and did the "reset network settings" button, it screwed up my phone so I couldn't use LTE period, I had to reflash the modem in order to fix it. I know you already said you reflashed the modem, but I'm not sure what to suggest. There is absolutely nothing physically wrong or incapable about your phone, just some config got screwed up somewhere along the way. I'd just try to flash as many things as you're comfortable with without losing your userdata. Like modem, bootloader, etc. until your data comes back. If nothing else, press the network settings reset button and flash the latest modem. Make sure your twrp is up to date as well.
Click to expand...
Click to collapse
I think i'm going to reflash my rom today. I did the modem, twrp is up to date, bootloader is fine. I did the reset network settings (I was sure that was going to fix it, no dice). So I'm going to reflash the rom today and see if that fixes it. After that I have no idea what is left to try other than reverting to stock, which I'd like to avoid.

Yes, it is a feature that needs to be added to your account. Go online and check their website or go into the hidden menu and activate it. If it sticks, it's on your account.
I tried the wifi and video calling flags and they didn't stick. Go figure... C'MON big red...

Larzzzz82 said:
Yes, it is a feature that needs to be added to your account. Go online and check their website or go into the hidden menu and activate it. If it sticks, it's on your account.
I tried the wifi and video calling flags and they didn't stick. Go figure... C'MON big red...
Click to expand...
Click to collapse
How do you enter the hidden menu on the n6? I thought I found it but it wasn't working.

.#.#4636#.#. select the phone info tab. In there, there will be either a drop down menu or buttons to tick and they'll change color

Larzzzz82 said:
.#.#4636#.#. select the phone info tab. In there, there will be either a drop down menu or buttons to tick and they'll change color
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Click to collapse
I got in, VoLTE was not ticked. I ticked it. I got the setting for it then in settings. But making a phone call gave me an error. I rebooted, and it's not ticked now. So does that mean I need to call Verizon to have them flag my account?

You need to add it in your account then. Easy enough to do online. You want to, "manage features."

Larzzzz82 said:
You need to add it in your account then. Easy enough to do online. You want to, "manage features."
Click to expand...
Click to collapse
That did the trick. All fixed. Thank you! That was driving me nuts. I never considered the idea that the setting would be turned off . But since I did leave and come back...
Thanks again!

Glad you're all set. ?