Develop Bugs

Network completely dropping randomly?

This is happening multiple times a day, randomly.
Ironically, I was at a vzw corporate store today getting a half off extended battery and incipio case, and it happened, i was driving home in the middle of a bluetooth call and it dropped, and while at work it drops every 10 minutes.
What the heck is going on? It even drops at my house, where i have "-93dBm" of 4G service... the notification bars will start at full 4G to none, grayed out.
This is extremely annoying and making my phone "work" a lot, thus killing the battery. It didn't make it through a 12 hour day today being in my pocket about 7/8ths of the time!!

al2x said:
This is happening multiple times a day, randomly.
Ironically, I was at a vzw corporate store today getting a half off extended battery and incipio case, and it happened, i was driving home in the middle of a bluetooth call and it dropped, and while at work it drops every 10 minutes.
What the heck is going on? It even drops at my house, where i have "-93dBm" of 4G service... the notification bars will start at full 4G to none, grayed out.
This is extremely annoying and making my phone "work" a lot, thus killing the battery. It didn't make it through a 12 hour day today being in my pocket about 7/8ths of the time!!
Click to expand...
Click to collapse
I just exchanged my Nexus a couple of days ago, because of this exact issue. So far, I haven't had a single random network drop on the new Nexus.
(Tech support suggested going to a VZW store and having them swap the SIM card out, so I did. As soon as I made it back out to my car, the network dropped again. As I was walking into the Target across the street, it dropped again, so I turned around and went back to the VZW store. They swapped the phone out.)

YES. Had no problems until today (at least that I've noticed). Now its not getting any data. I get strong 4G at my house too. Right now its saying I have 3G but its not giving me any data connection despite what the icon says. Might have to take it back

I had no problem until today. This morning the network dropped out suddenly and hasn't come back. Plugging it in, pulling battering, switching all data settings (LTE/3G, roaming, etc) has no effect. I may be taking a trip down to the Verizon store over my lunch break...

There is an issue with Verizon 3G/4G data right now, it seems to be down nationwide.

I live in Arizona / Phoenix and am experiencing the same. I have no data (3g or 4g) and haven't since my commute into work today. It's frustrating. This isn't a Verizon 3G/4G data issue nationwide. My coworker next to me is using a Droid Bionic and has both 3G and 4G working fine. We just loaded up several sites on her phone. I'm starting to get peeved.

iamsupreme said:
I live in Arizona / Phoenix and am experiencing the same. I have no data (3g or 4g) and haven't since my commute into work today. It's frustrating. This isn't a Verizon 3G/4G data issue nationwide. My coworker next to me is using a Droid Bionic and has both 3G and 4G working fine. We just loaded up several sites on her phone. I'm starting to get peeved.
Click to expand...
Click to collapse
Yep another co-worker with a verizon phone also has data coverage while mine has been skipping out this morning.
That being said, this is not a scientific poll since 99% of the people posting here have GN phones. Are there any reports of problems in the other forums?

Though several articles, this one being one (http://www.gottabemobile.com/2011/12/28/verizon-suffering-another-nationwide-4g-lte-outage/) are showing that there is, in fact, another nationwide 4g LTE outage. Maybe her Bionic just switches to 3G properly and my Nexus isn't? I changed it from LTE/CDMA to CDMA and powered off and on the radio. No luck.

iamsupreme said:
Though several articles, this one being one (http://www.gottabemobile.com/2011/12/28/verizon-suffering-another-nationwide-4g-lte-outage/) are showing that there is, in fact, another nationwide 4g LTE outage. Maybe her Bionic just switches to 3G properly and my Nexus isn't? I changed it from LTE/CDMA to CDMA and powered off and on the radio. No luck.
Click to expand...
Click to collapse
Thanks for that. My data just came back up and it's 3G only now and seems solid. Perhaps Verizon has taken down their LTE network to prevent phones from trying to connect to it until they resolve the problem.

I'm getting a 3G icon when I turn off LTE/CDMA and put it at CDMA only. But actually trying to load anything with data (web, Facebook, YouTube) doesn't work. No connectivity.

Yeah, Droidlife reported on the outage for ALL 4G phones. My Thunderbolt is also affected. This is one of the reasons why my paranoid self is happy that I have two phones: one on T-Mo and one on Verizon.

Called VZ, data down in Miami. Phone is heating up like a mf, good 'cause it's freaking cold here like 68

lioryte said:
Called VZ, data down in Miami. Phone is heating up like a mf, good 'cause it's freaking cold here like 68
Click to expand...
Click to collapse
I want to live somewhere where my big problem with the weather is that it's 68 degrees. Anyway, glad to hear it's a network issue and not my phone.

Random signal drops in Baltimore as well. Especially after a phone call. On second phone and still same issue.
Sent from my Galaxy Nexus using Tapatalk

Here in Rhode Island, I lost all signal for about 4 minutes, had 3g for about 5 minutes, then got 4g on and off for about 5-10 minutes.
As of now i'm solid 4g with no disconnect or 3g
its probably because of that 3.7+ MILLION devices activated for christmas
be glad we don't have RIM with a 3 day blackout

Yeah, and the problem with the GNex is that, unlike other phones, it doesn't seem to have a "no 4g, only 3g" capability, so when 4G goes down, we have no data whatsoever. Older phones that can switch LTE off are able to hook onto 3G.

SomeGuyDude said:
Yeah, and the problem with the GNex is that, unlike other phones, it doesn't seem to have a "no 4g, only 3g" capability, so when 4G goes down, we have no data whatsoever. Older phones that can switch LTE off are able to hook onto 3G.
Click to expand...
Click to collapse
Very very much untrue.
Sent from my Galaxy Nexus

SomeGuyDude said:
Yeah, and the problem with the GNex is that, unlike other phones, it doesn't seem to have a "no 4g, only 3g" capability, so when 4G goes down, we have no data whatsoever. Older phones that can switch LTE off are able to hook onto 3G.
Click to expand...
Click to collapse
Settings > More... > Mobile networks > Network Mode > Select CDMA (default is LTE/CDMA) > Profit

its a nationwide issue affecting SOME LTE Verizon users.
http://www.droid-life.com/2011/12/28/verizon-4g-lte-nationwide-data-outage-happening-once-again/

I was in a costco this afternoon and it wasn't working. I originally assumed it was the metal building. Nope, Verizon's network again.

4G/3G signal finally fixed on my phone

Hey guys I'm completely new here as a member. But over the past month or two I've been reading on XDA to see Q & A's about the Galaxy Nexus.
So I bought this phone on launch day after going through massive hell to be able to even purchase one. Long story short went to 3 different stores back and forth and at the end of the night, GOT ONE.
I've been having the huge signal issues with the phone like everyone else since Day 1. The issues with the 3G/4G switching off, extremely poor reception, stuck on 2G (calls/text only) and a lot of times, not having a signal at all!
So after looking on the forum, I decided I'd wait it out and not root my phone/update to 4.0.3/update radios, etc. I've also talked to Verizon Reps over the phone and they wouldn't really help me out. I've gotten so frustrated with the phone that I almost wanted to return it and get a Rezound or Razr JUST to be able to have a 4G signal.
YESTERDAY THOUGH, I spoke to a 2nd Level Tech Support person and we went through all the steps the 1st Level Tech did and what not to make sure I had my Data Connection on, battery pull, LTE/CDMA on and not CDMA only, etc. you get the point. One of the other things she told me to do was to make sure in the Mobile Network Settings that Data Roaming was checked. I told her that it wasn't because it said that I will incur charges and what not. She told me as long as I'm in the United States, with it checked, I won't receive any extra charges. It's only if you leave the United States to a different country.
I asked her why should it be checked out of curiosity and she said that by having it checked, it searches for any and all towers around you instead of trying to be locked on one or something like that. So I did that. After, she told me it probably won't work to get 4G signal yet because of the LTE Power Outage that was going on the same time I was on the phone with her.
Well later last night the LTE Power Outage was fixed and starting last night I started seeing 3-4 Bars or -82 to -96 dBm continuously. Well waking up this morning for work and throughout the entire day today, I've been getting a consistent 4G signal (with 3G coming on for 3-5 minutes about two times, then back to 4G) My speedtest results were great. Getting 16-23 mbps with my 4G signal in Orange County, California (Piggy backing off of LA).
Now I have no idea if it was 3 things. The Power Outage coming back on fixed it, the new extended battery fixed it (haha joking) or the fact that I turned on Data Roaming fixed it by connecting to all towers near me. Either way I've been completely happy since last night and all day today with it working. I literally lost signal once and it was for a good 5 seconds lol then went back to 4G.
Has anyone else turned on their Data Roaming or has seen their signal start to work after the LTE Outage? Let me know. Because I know that I didn't update the software to 4.0.3 or any other software update on it.
Thanks everyone and I hope all the Nexus phones' signals get fixed soon!!! This phone is completely amazing but without signal, it's like a paperweight.

Having to turn on data roaming to increase signal seems like bollocks to me. It would be interesting to try turning it off and check if you see any difference, now that the shortage is over.
Thanks for sharing, anyway

Yeah I'm not sure what fixed my phone but its now fixed. I'm getting full bars of 4G as I'm typing this. Did you check the Roaming Data and did a soft reset to see if that worked?
Sent from my Galaxy Nexus using XDA App

so wouldn't "roaming" mean that if you're in an area where verizon's towers aren't sending out a good signal, you'll pick up on sprint's towers if they're stronger?...

I believe so. Or something close to that. The rep said that I would only get roaming charges if I go out of the US with the Roaming check marked.
She's the one that told me I should get a better signal with Roaming check marked in. Then after the outage 2 days ago, that night, my signal was working and I was getting a constant 4G signal with good strength.
Sent from my Galaxy Nexus using XDA App

Gonna try this, thanks for the heads up.
Sent from my Galaxy Nexus using XDA App

Just turned this on at work and went from one bar of 4G to three. Don't know if it is a fluke or placebo, but a difference.
Edit: Maybe I spoke too soon. Back down to one. I'll wait til I get outside. Don't have the strongest signal in this building anyway.
Sent from my Galaxy Nexus using XDA App

@OP where in orange county?? I live in HB.. my signal is not that great there.. but in Irvine its full bars.. I never really had an issue to my knowledge at least.. may give your method a try at home to see if my sig improves.

I live in Garden Grove and Anaheim. But I'm constantly traveling throughout OC on an ambulance for work from Whittier all the way to San Clemente. So my signal ranges.
Funny you say that because I usually get horrible signal in Irvine on the 5 or 405 freeway. Haha.
Yeah I would try the roaming checked. Do a sim pull, battery pull, and see if it works. I assume that's what worked for me.
Sent from my Galaxy Nexus using XDA App

[Q] Losing all data when toggling 4g? [LTE

Hey everyone!
I was wondering if anyone else is having the problem where if you toggled your 4g to turn it off, you would lose all data entirely? I currently running winner's kang-cm9 and when I try to turn off 4g through the toggle or through the settings, I only get gray signal bars. I'm assuming I should still have 3g after turning off 4g. Is this someone that everyone is experience or is it my phone?

I'm having a similar issue (stock ROM). I notice it every morning when I leave for work. I leave my place and wifi disconnects (lack of signal). Since I don't have LTE outside, it seems like it try's over and over to obtain LTE signal. LTE is spotty in my area, so it will go in and out. However, 3G sometimes fails to connect and I sit there without any signal. It's incredibly frustrating...
Last night I just flashed to Apex ROM/Kernel. This morning I waited for my car to warm up a little bit and by the time i plugged in my phone, it had a 3g connection. I will be continuing to look out for this, but I have been able to replicate the issue in my first paragraph over and over again... something is definitely wrong with the radio on our phone (CDMA).

Oh that happens to me a lot too because I get bad 4g in my area so a lot of times when its switching back and forth I lose data for a while.
The problem I'm having is that I would try to disable LTE/4g to save battery but would end up losing all data (Only calls and text work). On my friends thunderbolt he was able to disable 4g and retain his 3g data. As for me, I lose all data and I have to restart to regain data again when I try to disable 4g data
Sent from my Galaxy Nexus using Tapatalk

Shooshi said:
Oh that happens to me a lot too because I get bad 4g in my area so a lot of times when its switching back and forth I lose data for a while.
The problem I'm having is that I would try to disable LTE/4g to save battery but would end up losing all data (Only calls and text work). On my friends thunderbolt he was able to disable 4g and retain his 3g data. As for me, I lose all data and I have to restart to regain data again when I try to disable 4g data
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
That's an interesting point. I was wondering how the other LTE VZ phones handled this situation... I think VZ/Google needs to address this in a fix ASAP.

I work in a largish company in Seattle area. We have ~5000 engineers working in the area and I posted the same question since my Verizon GNexus would completely lose all mobile data for hours at a time every 3-4 days. From what the results I got, they said that in our area they are all seeing those problems and they had different devices. I got responses from OG Droid, Droid Charge, GNexus, DroidX2, Thunderbolt.
I've been seriously considering returning my phone since this is clearly a verizon data network issue which is not limited to LTE as their press releases would have you believe.

caslca said:
I work in a largish company in Seattle area. We have ~5000 engineers working in the area and I posted the same question since my Verizon GNexus would completely lose all mobile data for hours at a time every 3-4 days. From what the results I got, they said that in our area they are all seeing those problems and they had different devices. I got responses from OG Droid, Droid Charge, GNexus, DroidX2, Thunderbolt.
I've been seriously considering returning my phone since this is clearly a verizon data network issue which is not limited to LTE as their press releases would have you believe.
Click to expand...
Click to collapse
Well see, i can get data if i toggle airplane mode or cdma to cdma/LTE. it takes me forcing the phone to start looking for 3g instead of LTE.

Very serious issue. Slow reconnects on a toggle that should be unobtrusive between 4g-3g. I suffer from the same issue.
What's worse. The reception in general is terrible. And dropping from 4g to 3g ..the phone either never reestablishes 4g or take.....a. VERY long time. Like, 10-15 minutes. Unbelievable
I'm trying desperately to get google to be aware of this and I'm PRAYYYIINNGG this is a software issue.
P.s this is my third nexus... so I believe this is everyone
Sent from my Galaxy Nexus using xda premium

Yep... I have two other friends with this issue as well. I just got off the phone with Verizon, and they acknowledged the data connectivity issues... they said an update is in the works and is tentatively sometime Jan/February.... for the record, i'm on 4.0.3 (axi0m rom); not that it should matter ...

What I'm seeing is similar but sounds like it might be slightly different. I have a thread on it here:
http://forum.xda-developers.com/showthread.php?p=21352288
I'm not sure if what I'm describing there is "normal" and the thing they are working on an update to address or if I have a bad radio/phone. Any thoughts?
In my case, it will go: 4G->no_data->4G in the span of about 30 seconds or so. The 4G indicator will still show for a few seconds but I'll get "no connection" kind of messages. Then I get just a solid gray triangle. About 30 seconds later, I see the bars, then the 4G indicator, then the bars turn blue.
Anyone else seeing this? This happened to the phone before this which I swapped due to this problem. What are the chances I got 2 bad ones in a row? Or is it just a similar issue to what you all are describing?

4g service but no 3g?

This JUST started yesterday...
So, yesterday at work I noticed I had no data...so I did the typical restart...still no data...I shrugged it off and went on my way. As I was driving I had data again. I use wifi at home, so when I got home I didnt notice any issues and honestly kinda forgot about it. Well on my way back to work this morning I looked at my phone...had full 4g service...all seemed well. Then I got to my office...
Now let me explain I DO have 4g in this area but honestly...its only a solid 4g outside. Its not the greatest indoors. Well in my office I only get 4g if I'm standing at the window or one "sweet" spot at my desk. So 99% of the time I'm in 3g. Well to make a long story short my 3g antenna seems to be borked. I can pull 4g fine...on lunch today I was in 4g and it was working great. However, when I'm in 3g I get zero data...my phone doesnt work in 3g only 4g.
I called verizon and they just decided to send me a new phone...
I have rooted my phone and I have put the newest radio on. That was awhile ago though. Tonight I'm going to try flashing a different radio but has anyone else had this problem?
Again I get NO 3g service only 4g. In an area where 4g is spotty thats NOT good.
Thanks!

Yes, I had the same issue. The first Nexus I had gave me spotty 4G service and never went to 3G in the couple of weeks I had it. Amazon sent me a replacement which is rock-solid. I get solid 4G coverage where I should (my wife and several coworkers have LTE phones so I know where I should) and when I don't have that 3G kicks right in.
I think you should definitely expected better results with a replacement. Good luck.

I had chosen to use 3G over 4G to save battery life. After about a week with the phone I began to notice that I can hardly ever get 3G reception any more, even though 4G reception has always been excellent. I don't think it is a problem with the phone, but rather Verizon tinkering with its network.

I was having the same problem all day today.
I switch the phone to CDMA during the day and use the office's WiFi for data. However, I noticed today as I dropped my daughter off at school after lunch that I had voice only and no data. Her school is the first tower north of my office that doesn't have an LTE radio, so I normally just get 3G.
Not today.
I drove back to the office and I was able to get data through the LTE radio, but the data connection would go dead as soon as I switched to CDMA. I thought there might be something wrong with the CDMA tower, but two of my co-workers had Thunderbolts set to CDMA only and they were having no problems getting data connections.
I talked with tech support for a good couple hours this afternoon and they had nothing for me. Eventually I flashed the leaked 4.0.3 radios and CDMA magically started working again.
Did the new radios fixed the problem, or is it just a coincidence?
Hmmm...

I have been having the same issue since yesterday. Verizon said there is no outages in the area. I had no data all the way home from CT to NY and finally when I got home at night 4G worked. 4G was working in and out on my way in so I forced CDMA to see if that worked and I have been unable to get anything since. I have a new SIM coming today, but somehow I do not think that will solve the issue.

I've noticed this too. I was turning my LTE off thinking it would use 3g, but I'm noticing now that many times I either have 4g or no data at all.
Sent from my Galaxy Nexus using Tapatalk

I'm having the exact same problems and registered here to see what the resolution is. I'm apprehensive to root as I am still within the 15 day return window and quite frankly for 300$ I think this is total BS. Never had a dropped call, missed or unsent text on the 3g network on my old Dinc and I've lived in the same place for 2 years.
OP- could you keep this updated on how your new device works out?

same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App

justin94 said:
same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
What do you mean by reset your number to your network? Never heard that term before

I'm not exactly sure, some techs don't know about it. When I had my charge it had no data. So they reset my number and phone to the network and I immediately got data back
Sent from my Galaxy Nexus using XDA App

[Q] HTC One M8 dropping data connectivity but showing 4G LTE...

Hey everyone!
I have a stock M8 with T-Mobile and I live in LA. I'm new to T-Mobile so I wanted to ask if this is normal.
My phone will lose data connectivity but the 4G LTE sign will stay on. Spotify will stop playing, Speedtest won't work, but the phone keeps telling me I have 4G LTE.
This happens a lot especially when driving, but today it happened while I was in the drive-through of a fast food place. I had barely moved and yet data was working fine at first, then suddenly "poof" nothing works anymore cause no internet, but the phone insists I have 4G LTE.
Usually turning data off and then on fixes it but not always.
Could it be an issue of switching towers? But then wouldn't my signal drop completely? Why does only data stop?
Anyone else having this issue or do I have a lemon phone I should return?

if you are jumping from tower to tower it may not relay properly. Call tmo and tell them to do a signal refresh. call from a different phone.

Do you have power saving mode on? The reason I ask this is bc it will turn your data connection off when your screen locks.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

I feel your edge
Same here ,
Ever since I bought the m8 it happens to me time to time.
Ive tried dis n reconnect the mobile data or go on airplain mode, but sometimes reboot is quicker.
Hope HTC publish a bug fixed firmware soon

Its a provisioning issue on the towers people you need to call tmo...

This was happening all the time to me on my Note 3 which Is why I upgraded to the M8. Just got it last night and it's happened once. Also, the signal isn't as strong. My Note would hold a lte connection with barely 1 bar. The m8 not so much. Likes to switch between 2g, 4g and lte.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

drksilenc said:
if you are jumping from tower to tower it may not relay properly. Call tmo and tell them to do a signal refresh. call from a different phone.
Click to expand...
Click to collapse
I took your advice and did it. Let's see what happens.
Thanks for the help!

cainman said:
I took your advice and did it. Let's see what happens.
Thanks for the help!
Click to expand...
Click to collapse
Did it work? I also just got T-Mobile and live in LA and it happens to me as well. I have a Nexus 5 though.

ainjobizz said:
Did it work? I also just got T-Mobile and live in LA and it happens to me as well. I have a Nexus 5 though.
Click to expand...
Click to collapse
It was fine for a couple of days. Today however I had to wait in the car for 1.5 hours for something and was playing Spotify.
Didn't move for that entire period. For an hour it worked fine, then suddenly it did this again where it wasn't receiving data and yet the 4G LTE sign was on screen.
So I guess it didn't really help. I turned data off and on and it restored it, but still... that's not cool.

cainman said:
It was fine for a couple of days. Today however I had to wait in the car for 1.5 hours for something and was playing Spotify.
Didn't move for that entire period. For an hour it worked fine, then suddenly it did this again where it wasn't receiving data and yet the 4G LTE sign was on screen.
So I guess it didn't really help. I turned data off and on and it restored it, but still... that's not cool.
Click to expand...
Click to collapse
Yeah same here. It happens in my house when I'm using my phone in bed and just loses data but it still says LTE and have to either turn off and on data or reset my phone.
Also on my way to work today I was using Spotify the entire drive, which is about 45 minutes, and never lost data but on the way back it lost it about twice. It sucks and hopefully there's a fix of some sort.
Sent from my Nexus 5 using Tapatalk

I think is not phone problem
tmobile signal issue
my z1 and htc m8 sometime both have this kind of issue
they both show I still have lte icon but just can't connect to network
and sometime you must wait like 1-2 mins to reconnect to network

I have had my M8 for a week and have not experienced any issue with data loss. I am in Miami, Fl. If anything I get way better LTE speeds than I have had with any of my last phones( S4, G2, Iphone 5S)

Same issue with my M8.
Full bars LTE signal and sometimes data just stops working. Need to reboot the phone to get it working again. Was thinking about exchanging the phone but it seems like a software glitch...

Dan37tz said:
Same issue with my M8.
Full bars LTE signal and sometimes data just stops working. Need to reboot the phone to get it working again. Was thinking about exchanging the phone but it seems like a software glitch...
Click to expand...
Click to collapse
I don't have this issue but I do have terrible speeds in south Atlanta.
3-5 bars in my home, and download speeds are from 3-6 Mbps down and uplad from 2-3Mbps up even with LTE. I get much better performance on HSPA+
LTE pings are half that of HSPA though

Just to add on here, in my experience this has more to do with the area and likely the towers supporting that area then software or hardware. Another possibility is T Mobile's network in LA is not 100% compatible with HTC is new radio firmware yet. If that's the case some tweaking by t-mobile on the backend would fix this issue straight away.
The reason I say this is because in Las Vegas, Nevada I never have any problem with LTE losing connection, however, this last week I was in Long Beach, CA (LA County) and constantly had loss of data connection while the phone would still displaying a full 5 bar 4G LTE connection.
Reboot or switching to airplane mode would fix it, however, it got to be so bad and happened so regularly, I eventually stopped using LTE entirely while there. The HSPA+ "4G" connection there was still producing around 10 megabits per second download which was more than enough. So, while there I switched off LTE and had no more issues with data connection dropping.
Long story short clearly seems to be an issue with T Mobile Lte Towers in the greater Los Angeles area. Possibly its an issue in other areas as well.

Behold_this said:
Just to add on here, in my experience this has more to do with the area and likely the towers supporting that area then software or hardware. Another possibility is T Mobile's network in LA is not 100% compatible with HTC is new radio firmware yet. If that's the case some tweaking by t-mobile on the backend would fix this issue straight away.
The reason I say this is because in Las Vegas, Nevada I never have any problem with LTE losing connection, however, this last week I was in Long Beach, CA (LA County) and constantly had loss of data connection while the phone would still displaying a full 5 bar 4G LTE connection.
Reboot or switching to airplane mode would fix it, however, it got to be so bad and happened so regularly, I eventually stopped using LTE entirely while there. The HSPA+ "4G" connection there was still producing around 10 megabits per second download which was more than enough. So, while there I switched off LTE and had no more issues with data connection dropping.
Long story short clearly seems to be an issue with T Mobile Lte Towers in the greater Los Angeles area. Possibly its an issue in other areas as well.
Click to expand...
Click to collapse
Happening here in South Houston too, but i am using a VZW M8 with Tmo.

I also have this issue, but I'm on AT&T and missing some bands that I need, so I was figuring it was that.

I had a galaxy s5 and had same issue.
So i know it's not the phone
Sent from my HTC One_M8 using XDA

Has anyone found a solution to this problem yet? My HTC One M8 has been losing data connectivity ever since I purchased it last month. It will say I have 4G LTE but I will loose data connection regardless. It's a nuisance. I never had that problem with the M7. My camera on the M7 got a purple haze so T-Mobile replaced it with a refurbished M7. It was the worst thing I could've done. The refurbished M7 would freeze and reboot a lot, until it finally got stuck in a boot loop and I lost all my photos, videos, and files. Would not go into recovery. Then T-Mobile sent me a plastic Samsung S4 as a replacement for that because they were out of the M7. The new M8 has been working pretty well except for the annoying data connection loss everyday. I have to activate then deactivate airplane mode to obtain data connection again. Only other time I ever had this happen was with a certain nighyly rom I put on my HTC HD2, but that was rooted, this is a stock phone, I never expected to have a data connection problem with a stock rom.

I had this problem for ages with straight talk with my old phone just before I bought my M8. Exactly the same issue in that my data would seemingly just cut out randomly after a bit then come back later(switching off/on and/or in and out of airplane would restore it).
In my case, it turned out to be my data settings. I played around with different settings one night and found that different settings finally got rid of the problem for me. Your mileage may vary, but it's an easy enough thing to try.