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Phone continously disconnects and loses signal if 3g is on

Hey guys, I have this prepaid ATT pay as you go simcard with the medianet unlimited on and the phone goes into a continuous disconnect and reconnect with the 3g signal if I have 3g enabled in the connection manager. If I turn off 3G then it works just fine and sticks with an EDGE connection. Is there something that I am doing wrong? I checked the connection settings with another friend who uses 3g from att as well and settings are the same. I have also resetted the phone multiple times too.
Oh and the phone I have is the ATT Tilt running Hyperdragon's most recent rom.

I'd try swapping SIM with your friend and see if it works for both of you that way. If the Kaiser still can't connect to 3G, you might want to try another ROM, if to no avail you might have the broken 3G radio problem.

kilrah said:
I'd try swapping SIM with your friend and see if it works for both of you that way. If the Kaiser still can't connect to 3G, you might want to try another ROM, if to no avail you might have the broken 3G radio problem.
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Click to collapse
I had the same problem. Got a brand new 3G sim card from mobile operator. No help. So sent it to warranty again.

There is a broken 3g radio problem?

johnny13oi said:
There is a broken 3g radio problem?
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Click to collapse
Yes, a lot of people including me had to send their Kaiser for a mainboard exchange for that same problem.
Here's the old thread about it I found when I had the problem.
http://forum.xda-developers.com/showthread.php?t=335074

Yes, it's a hardware problem. Seems to be fairly common. My TytnII had the same problem.
I had to send it off for repair last Monday. They sent me a replacement phone on Wednesday.

Oh great, I bought this phone a while back from someone else and was using it with Tmobile and am trying it out with ATT prepaid. So I guess I am not covered and am stuck with a phone with a broken 3g radio?

First try the steps described above, sometimes configuration/ROM trouble can make it look similar.

I tried calling support and talking with them and nothing really worked. They said I would have to do warranty exchange through HTC. They said that all they would need is a credit card number and they send the new one first and I have to send back the broken one and I won't be charged if there is no water damage or too many drops right? Do they send you a completely new device? I have kept this phone inside a microfiber pouch its whole life and there are literally no scratches anywhere and a screen protector on it since day 1. It seems to work fine when on the EDGE network, so should I send it back? I don't want to get charged for anything.

I have the same problem... it started with the stock ROM, I have tried four different ROMs, five different radios, even tried reverting to the 6>0 ROM thiking it was a 6.1 glitch, and nothing worked. I get EDGE just fine, but if I switch to 3G, I get a signal for maybe 30 seconds and then lose it.
Lucky for me, my warranty expired. However, AT&T is supposedly releasing the Diamond soon, I thnk I'll plod along until then.

drunkbastard said:
I have the same problem... it started with the stock ROM, I have tried four different ROMs, five different radios, even tried reverting to the 6>0 ROM thiking it was a 6.1 glitch, and nothing worked. I get EDGE just fine, but if I switch to 3G, I get a signal for maybe 30 seconds and then lose it.
Lucky for me, my warranty expired. However, AT&T is supposedly releasing the Diamond soon, I thnk I'll plod along until then.
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Click to collapse
Man I wish I had the money to switch devices like that. Being a college student means no money.

3G Radio activity

Hello all,
I am having some issues with the 3G connection with my Dream that started a few weeks ago. There are times when it works just fine and I am able to use apps/maps/browser with no difficulty what-so-ever. Then out of no where it will stop working. I will have 3 or 4 bars, and it says I am connected at 3G, but only outgoing ('Up') arrow on the status bar lights up, while the incoming ('Down') arrow will not light up at all. Then finally after various wait times (2 to 10 minutes) the '3G' will disappear and light back up as if the radio is resetting and will work again for a few minutes before repeating the same process over again. If I enable the 2G only connection it works just fine. I do not see any pattern or correlation to this disconnect. I have tried wiping, reformatting the SD and re-flashing my phone with no help...
Any ideas? TIA
ROM: Cyan 4.0.4 Stable
Recovery Image: Cyan 1.4
Radio: 26I

Try airplane mode when this problem occurs.

maxisma said:
Try airplane mode when this problem occurs.
Click to expand...
Click to collapse
You mean enable airplane mode and then disable it again to reset the connection? I just tried it...did not help. Still sending information out but not downloading anything in return...

bethel03 said:
Hello all,
I am having some issues with the 3G connection with my Dream that started a few weeks ago. There are times when it works just fine and I am able to use apps/maps/browser with no difficulty what-so-ever. Then out of no where it will stop working. I will have 3 or 4 bars, and it says I am connected at 3G, but only outgoing ('Up') arrow on the status bar lights up, while the incoming ('Down') arrow will not light up at all. Then finally after various wait times (2 to 10 minutes) the '3G' will disappear and light back up as if the radio is resetting and will work again for a few minutes before repeating the same process over again. If I enable the 2G only connection it works just fine. I do not see any pattern or correlation to this disconnect. I have tried wiping, reformatting the SD and re-flashing my phone with no help...
Any ideas? TIA
ROM: Cyan 4.0.4 Stable
Recovery Image: Cyan 1.4
Radio: 26I
Click to expand...
Click to collapse
it could be your phone
but also it could be 3g service in your area.. it could be unstable or weak..
i.e. i get terrible 3g service in my nearest mall,but 2g works fine.
but in my house my 3g service is almost perfect.

R u using a datasim or not??
Check with ur telecom operator. Sometimes u need to be using a data only sim to be using 3g on the g1. It happened to me. Otherwise there might be some apn settings wrong or missing.

Thanks for the reply guys. I thought it could be the 3G in my area but I have had my phone for well over 6 months now and it has worked great at my house. I know t-mobile is still working on their 3G roll-out so it could be that as well. I really hope it is not my phone but with my luck...who knows...
As far as the datasim, I am not sure. Like I said, I have had my phone for 6+ months and 3G used to work just fine. Is there any way I can tell by looking at my T-mobile SIM to see if it is a datasim or not?

My G1 is doing the same thing!
I am in Atlanta and i have been noticing the same exact problem. I am also noticing that i am suddenly getting mobile versions of websites that i usewd to always get the full web version. I am on cyan 4.1.7. Not sure if it is the rom or the service but nonetheless i am experiencing the exact same problem.

Weird stuff... I am in Los Angeles in case people are wondering.

bethel03 said:
Thanks for the reply guys. I thought it could be the 3G in my area but I have had my phone for well over 6 months now and it has worked great at my house. I know t-mobile is still working on their 3G roll-out so it could be that as well. I really hope it is not my phone but with my luck...who knows...
As far as the datasim, I am not sure. Like I said, I have had my phone for 6+ months and 3G used to work just fine. Is there any way I can tell by looking at my T-mobile SIM to see if it is a datasim or not?
Click to expand...
Click to collapse
if you want to take more precautions..
u can go to a corporate tmobile store and ask them to replace your sim card. its just something basic. some sim cards go bad. i had to replace mine twice.
if you go to a booth in the mall or whatever they may charge u $25. in a corporate store,its usually free.
or you can call tmobile and ask them to take off your data plan and then add it cak on again.. this again is a basic troubleshoot for data related problems..
and if it is your phone(i assume you bought ur phone from tmobile) you should have a 1 year warranty. tmobile might exchange or call htc... all you really have to do is pay shipping.

brian_v3ntura said:
if you want to take more precautions..
u can go to a corporate tmobile store and ask them to replace your sim card. its just something basic. some sim cards go bad. i had to replace mine twice.
if you go to a booth in the mall or whatever they may charge u $25. in a corporate store,its usually free.
or you can call tmobile and ask them to take off your data plan and then add it cak on again.. this again is a basic troubleshoot for data related problems..
and if it is your phone(i assume you bought ur phone from tmobile) you should have a 1 year warranty. tmobile might exchange or call htc... all you really have to do is pay shipping.
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Click to collapse
Awesome, thanks for your help. I have had to replace my SIM card a couple of times as well with previous phones but that was due to MMS problems. I didnt think of 3G/SIM problems but I hope that is it. Thanks again!!

I went to the T-Mobile store today and they said that a lot of people have come in with the same problem. So apparently it is a problem with the 3G network here in Southern California (at least the area I live in). I am grateful it is not my phone or the ROM but still kinda ticked off I gotta deal with it until the issue is resolved...

bethel03 said:
I went to the T-Mobile store today and they said that a lot of people have come in with the same problem. So apparently it is a problem with the 3G network here in Southern California (at least the area I live in). I am grateful it is not my phone or the ROM but still kinda ticked off I gotta deal with it until the issue is resolved...
Click to expand...
Click to collapse
Ask them to reimburse you for the downtime

i too have been having the same problem as the original poster!
out of nowhere my 3g starts acting really funky and only the up arrow flases but it doesnt download anything. i hope this is a problem with the 3g network in los angeles otherwise idk what ima do.

djbootleg said:
i too have been having the same problem as the original poster!
out of nowhere my 3g starts acting really funky and only the up arrow flases but it doesnt download anything. i hope this is a problem with the 3g network in los angeles otherwise idk what ima do.
Click to expand...
Click to collapse
whenever this happens.. it usually means that ur in an area that has weak 3g. i.e. i get weak 3g service in my nearest mall.
or ur areas 3g network is bugging up. but most likely its the first one ^

im having the exact same problem. been having it for a week or so. i thought maybe it was a bug in cyans roms but its not. i will lose 3g connection but i have a full connection and only the uplink arrow is on. this is really pissing me off. i live in los angeles and its been having 3g for a while now and i have never experoenced issues like this with 3g

[Q] No 3g

So I am already on my second Bionic after the first one stopped working (completely stock btw.) Just picked up the second one yesterday and have not been able to connect to 3G at all for the last 3 hours. I have done 5 battery pulls, toggled airplane mode more times than I can count, switched between CDMA only and LTE a handful of times and not even once has the 3g symbol appeared at the top. Just the phone signal and when I reboot it a triangle for a few second where the 3g symbol is supposed to be. Any ideas? If nothing else I am bringing this one back after work too and reverting to the D1 until something else comes out.

This appears to be a common problem with the Bionic. I am suffering from the same thing and getting ready to take mine back also, but I dont think it will fix anything.
Some on the forum have tried a fix outlined earlier on the forum that involves pulling your battery and SD card, then sliding your SIM card in and out repeatedly, which theoretically creates a better connection between the SIM card and phone. I have tried this and it did not work for me, but others have had success.

Verizon should extend the 14-day return period until after the supposed October/November patch is released.
Sent from my DROID BIONIC using XDA App

Took my Bionic onto the local Verizon store, and the tech guy wanted to try a new SIM card and see if that worked, because I still have a week left of the 14 day period. I was willing to try it, because I have nothing else to loose.
So far, I haven't had any drops, but it has been only 4 hours. however, I would have experienced several by now, so hopefully it was fixed.

I find this odd because only the 4G is controlled by the SIM card, and you said you were having 3G issues?
In any case, my 3G drops sometimes, but a quick airplane mode ON, airplane mode OFF always works. I might take it in and say you had this help your case though, and see about getting mine looked at.

Lsdozer said:
Took my Bionic onto the local Verizon store, and the tech guy wanted to try a new SIM card and see if that worked, because I still have a week left of the 14 day period. I was willing to try it, because I have nothing else to loose.
So far, I haven't had any drops, but it has been only 4 hours. however, I would have experienced several by now, so hopefully it was fixed.
Click to expand...
Click to collapse
Well, the problem isn't fixed. It started shortly after I posted about the SIM card. This is getting frustrating.
I guess the next step is a new phone.

I'm having the same issue along with horrible data speeds for both 4G and 3G. My down speed for 3G is sometimes as low as 50kbps, and my down speed for 4G is 1.5mbps. That is also with apparently "full" signal strength.
The 14 day return/exchange policy is thursday for me so I'm thinking about going in and having them exchange it. I'll probably also point out the headphone issue since everyone seems to be having that one. There shouldn't be a problem right?

[Q] Phone Roams All The Time

My phone out of nowhere started doing this really fun thing where it drops to roaming at random. From what I can tell, the phone is not making a handoff to the next tower to avoid the roaming. For example, if I'm sitting under a tower with full 4G, everything is fine. If I have 2 bars, it will work in 4G for a while before dropping to 3G roaming. I am able to force it back into 4G by dropping in and out of Airplane mode.
I'm running the official CM11 4/30 nightly (I was on the March Snapshot until this started happening).
First I used some Google-Fu and found it's most likely a bad SIM. I swapped SIMs with my wife, she was stuck in 3G roaming, awesome! Went to Verizon, the switched the SIM, all good, right? Nope, I didn't notice it right away, left the store and thought all was good until I needed to use internet at work.
Next, I thought it was software, so I created a backup, and dirty installed the newest CM11 nightly. No change, so I did a full wipe and install. No luck.
So next I thought maybe the radio was corrupted, so I tried to update the radio, which didn't go so well. I got stuck in a boot loop and had to sideload the old driver and reflash. So I'm back up but still having this problem. I'm thinking my only thing I can do at this point is to go to stock and see if the updated radios make a difference.
I saw another guy is had the same problem, but he had his phone replaced. I'm not sure if that will work for me since I purchased via Swappa (I do have Asurion insurance though).
So what help do I need?
1) Does anyone have any ideas on what I can do to fix this?
2) Are there any good instructions out there for how to flash to stock?*
3) Are there any good instructions on how to re-root and flash back to a custom ROM once taking the newest OTA?*
*Most of the instructions I've found have been pretty confusing and use a lot of acronyms without explaining them. I'd be willing to write some cleaner instructions for a sticky if someone would be willing to help me out with any questions I have.
Thanks everyone, I appreciate any help offered.

EtherBoo said:
My phone out of nowhere started doing this really fun thing where it drops to roaming at random. From what I can tell, the phone is not making a handoff to the next tower to avoid the roaming. For example, if I'm sitting under a tower with full 4G, everything is fine. If I have 2 bars, it will work in 4G for a while before dropping to 3G roaming. I am able to force it back into 4G by dropping in and out of Airplane mode.
I'm running the official CM11 4/30 nightly (I was on the March Snapshot until this started happening).
First I used some Google-Fu and found it's most likely a bad SIM. I swapped SIMs with my wife, she was stuck in 3G roaming, awesome! Went to Verizon, the switched the SIM, all good, right? Nope, I didn't notice it right away, left the store and thought all was good until I needed to use internet at work.
Next, I thought it was software, so I created a backup, and dirty installed the newest CM11 nightly. No change, so I did a full wipe and install. No luck.
So next I thought maybe the radio was corrupted, so I tried to update the radio, which didn't go so well. I got stuck in a boot loop and had to sideload the old driver and reflash. So I'm back up but still having this problem. I'm thinking my only thing I can do at this point is to go to stock and see if the updated radios make a difference.
I saw another guy is had the same problem, but he had his phone replaced. I'm not sure if that will work for me since I purchased via Swappa (I do have Asurion insurance though).
So what help do I need?
1) Does anyone have any ideas on what I can do to fix this?
2) Are there any good instructions out there for how to flash to stock?*
3) Are there any good instructions on how to re-root and flash back to a custom ROM once taking the newest OTA?*
*Most of the instructions I've found have been pretty confusing and use a lot of acronyms without explaining them. I'd be willing to write some cleaner instructions for a sticky if someone would be willing to help me out with any questions I have.
Thanks everyone, I appreciate any help offered.
Click to expand...
Click to collapse
Get anywhere? I'm experiencing the same. Roaming all the time. Going to revert back to stock 12b and see what happens.

dr_w said:
Get anywhere? I'm experiencing the same. Roaming all the time. Going to revert back to stock 12b and see what happens.
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Click to collapse
I'm fairly certain it's hardware. I spent a day using my Galaxy Nexus - full 4G the entire day.
I went back to stock, "bricked" my phone about 3 times doing it (quotes because it was salvageable, but I had a couple hours where I was googling like a madman worried I dun ****ed up). Stock and the new radios made no difference. In fact, with stock it would only go to 4G if I restarted it - airplane wouldn't even bring 4G back. Figure that one out.
I went to the VZW store and I'm basically screwed. I can call LG and see if they'll replace it or use Asurion. Since I got the device off Swappa, they cannot replace it. They tried to order me a new one, but the system wouldn't let them. I don't really have time to call LG, so I'm probably going to Asurion it. Their process is stupid simple to do and they'll have a phone to me the next day. Then I can spend all day tinkering with it and getting CM11 back on, which I feel like I'm an expert at right now.
Sorry, wish I had better news. If you got the device from VZW, go to the store after flashing to stock. They might want to try swapping your SIM first though, so make sure you go to a store that has decent 4G coverage in its surrounding area.

EtherBoo said:
I'm fairly certain it's hardware. I spent a day using my Galaxy Nexus - full 4G the entire day.
I went back to stock, "bricked" my phone about 3 times doing it (quotes because it was salvageable, but I had a couple hours where I was googling like a madman worried I dun ****ed up). Stock and the new radios made no difference. In fact, with stock it would only go to 4G if I restarted it - airplane wouldn't even bring 4G back. Figure that one out.
I went to the VZW store and I'm basically screwed. I can call LG and see if they'll replace it or use Asurion. Since I got the device off Swappa, they cannot replace it. They tried to order me a new one, but the system wouldn't let them. I don't really have time to call LG, so I'm probably going to Asurion it. Their process is stupid simple to do and they'll have a phone to me the next day. Then I can spend all day tinkering with it and getting CM11 back on, which I feel like I'm an expert at right now.
Sorry, wish I had better news. If you got the device from VZW, go to the store after flashing to stock. They might want to try swapping your SIM first though, so make sure you go to a store that has decent 4G coverage in its surrounding area.
Click to expand...
Click to collapse
Thanks dude. I think you are right, flash stock and get a new sim first. I have a hard time believing its a hardware problem. I just wrote this in the other post about roaming:
"Same exact problem here. I was on the phone with Verizon last night. I was running cloudy pro 2 (all his roms for that matter as they are international roms) and kept getting the roaming issue you speak of...with 3g. I went back to 11A completely bone stock. Just like you mentioned, I get 4g but then after like 10 minutes I get 3g with roaming. Of course this is after I spent 30 minutes on the phone with tech support. They 'zapped' my sim card and it appeared to work but no dice. Now before doing all this I downloaded build prop editor and changed the ro.build.target_country to US versus COM as everyone suggested in all the forums, still no dice. I've tried the toggle airplane mode trick...works for like 5 minutes and back to 3g roaming. I think maybe a new sim card and avoid international roms...bummer because cloudys roms are blistering fast. Interesting thing though, I installed xdabebbs rom and malladus' rom, after already running cloudys roms, and get 3g but no roaming. I also verified that Verizon wasn't throttling me or something like that. One more thing I tried is reflashing the basebands and 24A modem, no dice. If there is a build prop fix or some other fix I'd love to hear it.
Edit: One think I'd like to mention. When I had an S4 I switched between stock roms and AOSP roms and the network settings were responsible for causing the roaming because the stock rom was an older build than the AOSP. So when I had roaming, I'd reflashed the AOSP rom, changed the settings then flash the stock rom. It worked great. "
Edit#2: Ok making a little progress. Just did this:
Get a build.prop editor from the play store, and change ro.carrier to VZW and ro.build.target_operator to VZW and ro.build.target_country to US.
Initially it worked but when I make calls it gives me Unfortunately, the process com.android.phone has stopped and I cant make calls. I went into Settings, Apps, reset app preferences...that didn't fix it either.
4G/LTE is pretty solid now but again, I cant make calls.
Edit#3: Nevermind...roaming again.

dr_w said:
Thanks dude. I think you are right, flash stock and get a new sim first. I have a hard time believing its a hardware problem. I just wrote this in the other post about roaming:
"Same exact problem here. I was on the phone with Verizon last night. I was running cloudy pro 2 (all his roms for that matter as they are international roms) and kept getting the roaming issue you speak of...with 3g. I went back to 11A completely bone stock. Just like you mentioned, I get 4g but then after like 10 minutes I get 3g with roaming. Of course this is after I spent 30 minutes on the phone with tech support. They 'zapped' my sim card and it appeared to work but no dice. Now before doing all this I downloaded build prop editor and changed the ro.build.target_country to US versus COM as everyone suggested in all the forums, still no dice. I've tried the toggle airplane mode trick...works for like 5 minutes and back to 3g roaming. I think maybe a new sim card and avoid international roms...bummer because cloudys roms are blistering fast. Interesting thing though, I installed xdabebbs rom and malladus' rom, after already running cloudys roms, and get 3g but no roaming. I also verified that Verizon wasn't throttling me or something like that. One more thing I tried is reflashing the basebands and 24A modem, no dice. If there is a build prop fix or some other fix I'd love to hear it.
Edit: One think I'd like to mention. When I had an S4 I switched between stock roms and AOSP roms and the network settings were responsible for causing the roaming because the stock rom was an older build than the AOSP. So when I had roaming, I'd reflashed the AOSP rom, changed the settings then flash the stock rom. It worked great. "
Edit#2: Ok making a little progress. Just did this:
Get a build.prop editor from the play store, and change ro.carrier to VZW and ro.build.target_operator to VZW and ro.build.target_country to US.
Initially it worked but when I make calls it gives me Unfortunately, the process com.android.phone has stopped and I cant make calls. I went into Settings, Apps, reset app preferences...that didn't fix it either.
4G/LTE is pretty solid now but again, I cant make calls.
Edit#3: Nevermind...roaming again.
Click to expand...
Click to collapse
Alright, so, I have some interesting news.
I got a replacement device from Asurion - not just a replacement, a brand new device out of the box. I pulled it out of the box, swapped the SIM, same exact issue .
I went to Verizon and *****ed up a storm. They basically said "you bought it on eBay, not our problem" (I actually did Swappa - but they don't know Swappa and they do know eBay).
So I got the guy in the store to do some digging, and apparently Verizon has a point opened up with LG as they're seeing this on more and more devices - especially since KK came out. So I figured I could try an older radio. The device was on 12B when it arrived. I just flashed stock to 10B and it's the same issue. I don't know what's going on at this point - nothing makes sense but its apparently a known issue that's been appearing since the KK update.
I'm going to call Asurion and request a new device again since this one is doing the same thing, we'll see what happens. I'm still leaning towards hardware and thinking there was a slew of bad radios that went out.
Just for giggles - and I have no reason whatsoever to think this will work. I'm going to swap out the new SIM that came with the phone. Originally, I just put in my old SIM since the new one was taking too long to activate. I'm having the exact same issue I had previously. With that, I'm going to leave the new SIM in and see if it has the same dropping issue. The guy in the store had mentioned he could swap out the SIM but after a few days it will crap out again... which makes zero ****ing sense. Because of that, I might as well see what happens if I pop a new SIM in. While again, this makes 0 sense, I'm wondering if maybe the phone is frying the SIM somehow?
Again, it makes no sense at all, but I have nothing else left to try other than getting Asurion to repeatedly send me phones until I find one that works or they replace for another type of phone (which I REALLY don't want). I'll drop an edit in an hour or so if what I try makes a difference.
Quick Edit:
I COULD just keep going to the VZW store and have them repeatedly swap out SIMs since it will fix it for a few days .
EDIT:
Got the new SIM installed and it's working. The guy in the VZW store told me that we can keep swapping SIMs and the same issue will happen, which again, makes no sense to me. I'm at a bit of a loss to be honest. I wonder if it's possible that my old device was frying the SIMs (again, makes no sense) and that maybe the new SIM not going in my old device will fix the issue.

What ROMs are you running? A phone frying a Sim does not sound likely at all. I got my new sim card and have been running xdabebbs ROM with no network issues. I feel like my issues stemmed from the Intl ROMs.
Sent from my Nexus 7 using Tapatalk

dr_w said:
What ROMs are you running? A phone frying a Sim does not sound likely at all. I got my new sim card and have been running xdabebbs ROM with no network issues. I feel like my issues stemmed from the Intl ROMs.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
The only ROM I've ever run was CM11.
Same thing happened on stock though after flashing through the LG Flash Tool. Then, with the new phone from Asurion, used old SIM - 3G only. Used new SIM - 4G sticks.

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?
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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.
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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.
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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. ?