Cell connection issues - T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting

Me and my girlfriend have been having a bit of trouble with our T-Mobile Note 4s. Sometimes I have full 4G and can't make calls or send text but I have fast data connection, sometimes I have full 4G and then the 4G drops and I can just call and text and not have data and it last until I restart my phone. This will randomly happen 10+ times a day and it is not a fun process.
https://drive.google.com/file/d/0B6YSdaKDkX9wV0JSNEx5NF9TRHc/view?usp=sharing

Bump

It would help if your were to tell us where you are, I.e. location, city, state. Did you have this problem previously with tmobile using a different phone? Do your have this problem everywhere you go?

Is the issue only at your home? Bad sim ?
BAD ASS NOTE 4

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[Q] 3G- no data, but GPRS, Edge & HSDPA ok?

I've had this problem with my Nexus One for as long as I could remember, but kinda ignored it - thought perhaps a new radio would fix it, or a new ROM...
But no, it still bugs me.
Basically, if the phone is on 'normal' 3G, I cannot receive any data. It just gets no connection. If I have HSDPA, or GPRS or EDGE - it all works fine.
But 3G? Nothing. And its EVERY time.
Travelling on the train every day, HSDPA isn't stable, so it often drops to 3G, but then it drops dead. I have to restrict the phone to 2G if I want to check things reliably.
I've tried every radio from every country from the original to the latest 5.12 leak.. yes, speeds increase, HSDPA engages more often, but as soon as I'm on normal 3G: Dead.
And I've tried all ROMs (original, MCR, Cyanogen, Desire, MIUI) - same.
Any build.prop tweaks I could find... same.
Now, I remember talks about this when the Nexus came out originally - but there doesn't seem to be any threads about it now, so do I just have a faulty Nexus One that I've put up with since Christmas last year?
Or have I missed something blatantly obvious that every else did to fix this problem?
Any help gratefully received
Pardon my grammar and spelling I'm typing from my phone without swype and its annoying. I had a similar problem. When on 3g I'd miss calls texts, etc...I had my boss call in my face and my phone didn't ring. It got so frustrating I turned off 3g for several months. Too make a long story short ....all those 3g problems went away when I 2.2 came out on xda I put a new radio and rom on. I can't tell u if it was the radio, 2.2, or if tmo had simply added new towers or improved signals from tmobile.
I'd call tmo see how your area looks and if there's any new towers.
I've been on 2.2.1, and 2.1, 2.2, and used all the radios that have been released.
All the same.
I'm in the UK and on Orange, and I have spoken, well, tried to speak to my network about it a couple of times, saying the fact that I've had this issue in the past with my HTC Hero, and I've tried every software update, radio, etc, but because the Nexus One isn't an Orange handset they blame that, Android, or the signal in my area. Yet, I can't believe its just 'Android', and it can't be all signal where-ever I go, so perhaps my phone does have a fault? I don't know!!
The common denominator between this and my Hero is the SIM card.. but convincing them the SIM is faulty is nigh impossible. I'm receiving calls and texts on 3G, and get data all the other times, so it can't be... can it?
Argh, as you can see, this is slowly driving me mad..!!!
Yours sound worst than mine. I used to have very reliable 3G data until upto mid October. After that period, there were numerous reports of Orange UK users struggling with data blaming (with high possibility) on merge plan with T-Mobile.
I tried SIM with my Hero and Nokia N82. All 3 phones suffer the same poor 3G connection and in places I spend my time mostly, all struggle to get any form of internet. Few months back on same places, all my mates were impressed by Orange's coverage.
Yesterday, out of nowhere I received a sms from Orange confirming that merged plan went well and customers are to benefit from all cell towers of both network. Couldn't stop smiling then tried to access XDA on N1's browser. Safeguard was ON and access denied. Tried to open few more, all same. Frustrated almost dialed 150 but couple hours later, all started as normal with H signal. No interruptions, no waitings and no error msg. Tested for almost 8 hours. Though still to confirm the reliability.
One more thing I noticed is that before I was using WM's AVS kernel. Almost always once in every 4 attempts, a msg would pop up on error connecting. Changed to SVS kernel and msg still would appear but very very rare. BTW, on latest Nightly.
Coming to end with orange contract and if problem continues, I'm moving to O2.
Try your SIM on other phones to see whether it's the issue with N1.
I might have the same problem. but this just came up 2 nights ago. while connected on data network, all is fine until it drops to 3G, app (opera mini) freezes and you will have to force close. restricted my network to 2G and all was fine. then a while ago i enabled again on 3G and all was fine again.
is this a sign that i may get your same problem soon?

[Q] 4g data problems at home

It seems I have very good 4g signal at my work but when I am at home, it gets stuck on either 1x or 3g, according to sprint, there is 4g coverage on my house.Does anyone have problems with 4g not working properly? Its getting me annoyed since I use hotspot at my house. Any suggestions would be helpful.
I've noticed it'll show 3 bars of 4g at home, but if I actually start browsing it drops to 3g. My friend had done nothing but complain about sprints network so I am just assuming it's their problem.
Sent from my HTCONE using xda app-developers app
I'm having the same problem! My friends iPhone gets better reception, and we both have Sprint. He gets LTE at my house in my office, but I get 3G or 1X. It's very frustrating. I may return the phone, or leave Sprint altogether, as I didn't have these problems with my Verizon Note 2.
vampire5003 said:
I'm having the same problem! My friends iPhone gets better reception, and we both have Sprint. He gets LTE at my house in my office, but I get 3G or 1X. It's very frustrating. I may return the phone, or leave Sprint altogether, as I didn't have these problems with my Verizon Note 2.
Click to expand...
Click to collapse
I have used sprint chat with an agent and followed every troubleshooting method and still 3g. I will check the store to see if I can exchange it for another phone or see whqt happens
Could just be a week signal. Note that the signal bars on your phone are NOT for 4G. Check out this helpful write up over at S4GRU could help you determine what is up once you check LTE signal levels.

[Q] Poor signal (one bar)

hello, I have a new t mobile htc one I got as gift (never opened). My old phone was an unlocked samsung galaxy nexus using a tmobile prepaid sim. I resized this sim to fit the htc one and everything worked fine( full bars for signal). Problem with this sim is that I could not make wifi calls. So I called tmobile and had them activate the new sim which I got with the htc one (Same prepaid plan, no data). i can now make wifi calls. Problem is once wifi is disconnected I only have 1 bar. If I attempt to make a call all bars raise in full, even if i attempt to check my balance the bars automatically jump from 1 to full and back to 1 bar after i see my balance. Is there a setting i need to change or is this normal? i am worried I may be missing calls like this. (All this happens when the wifi is disabled)
Sorry if the post is confusing, I tried to provide all the details but will be happy to provide anything else if necessary.
Thanks!
stephenjones007 said:
hello, I have a new t mobile htc one I got as gift (never opened). My old phone was an unlocked samsung galaxy nexus using a tmobile prepaid sim. I resized this sim to fit the htc one and everything worked fine( full bars for signal). Problem with this sim is that I could not make wifi calls. So I called tmobile and had them activate the new sim which I got with the htc one (Same prepaid plan, no data). i can now make wifi calls. Problem is once wifi is disconnected I only have 1 bar. If I attempt to make a call all bars raise in full, even if i attempt to check my balance the bars automatically jump from 1 to full and back to 1 bar after i see my balance. Is there a setting i need to change or is this normal? i am worried I may be missing calls like this. (All this happens when the wifi is disabled)
Sorry if the post is confusing, I tried to provide all the details but will be happy to provide anything else if necessary.
Thanks!
Click to expand...
Click to collapse
This happens with me sometimes as well...if it is in LTE mode, the signal bars are less...1 , sometime 2, and sometimes 4... as soon as i make call, the data connection is OFF for that moment, and the signal bars are full....as soon as the calls end, the data connection is activated.... the bars are less again.... try changing the data connection modes from LTE to 3G only and to 2G....and see what happens
mathrania said:
This happens with me sometimes as well...if it is in LTE mode, the signal bars are less...1 , sometime 2, and sometimes 4... as soon as i make call, the data connection is OFF for that moment, and the signal bars are full....as soon as the calls end, the data connection is activated.... the bars are less again.... try changing the data connection modes from LTE to 3G only and to 2G....and see what happens
Click to expand...
Click to collapse
Awesome this helps. Thanks. In my situation I have no data plan setup. No need for any internet on my phone atm. So all I use this phone for is calls and an occasional sms. Will I have a longer battery life if i disable lte and have it on gsm only? Would the call signal drop?
stephenjones007 said:
Awesome this helps. Thanks. In my situation I have no data plan setup. No need for any internet on my phone atm. So all I use this phone for is calls and an occasional sms. Will I have a longer battery life if i disable lte and have it on gsm only? Would the call signal drop?
Click to expand...
Click to collapse
i am not sure, but when you dont use Mobile Data on your HTC one, there is no need to select the LTE mode.... you can select the other option always. and it might save battery as well....."might"
You will definitely save on battery if you switch to 2g if you don't use data at all. Switching to 3g frequency takes more battery even when there's no data connection.
I switched it to gsm only then disabled mobile data. Full bars now. This should work. The next option is wcdma which i dont think tmobile uses.

Almost full LTE bar+LTE signal booster and some calls not going through?

I've been stock, Dynamic Kat, Fire Kat you name it.
So long story short, I have little to no signal in my room (2/10 calls will go through) the rest will go to voicemail and won't even give me a notification someone called. I also don't get any data or extremely slow when I'm lucky
So I tried the T mobile LTE signal booster and I can finally get data on my phone at slow speeds of 3mbps or even goes to 1 sometimes (I get 8mbps in the living room)
So now I still get random voicemails from my job or friends, I don't know how often this happens but it does happen....I always see a random voicemail without my phone ringing Wierd thing is I get FULL LTE or 4G bars
I tried using wifi preferred for wifi calling and cell data preferred and still happens, I even reseted my APN by deleting it, turning it off and taking the battery out so the APN would reset (I also added 80 to one of the apn settings, seen a thread this would help with texting and receiving mms) Do you guys use ipv4 or ipv6?
. I never had a problem like this with AT&T do you guys have any idea what could be wrong?
I kept having this problem.. Long story short.. I swapped note 4s thru tmobile and no longer have that issue.. All I was getting was voice-mails and text messages sometimes from people that called letting me know they called
Sent using my T-Mobile Note 4
ezsoulja said:
I kept having this problem.. Long story short.. I swapped note 4s thru tmobile and no longer have that issue.. All I was getting was voice-mails and text messages sometimes from people that called letting me know they called
Sent using my T-Mobile Note 4
Click to expand...
Click to collapse
how long did it take? or can I go to a store?
Overnighted a phone to me., it was a issue that sounded like hardware issues no matter how many roms I flashed or odin
Sent using my T-Mobile Note 4

Data issue...

I've been having this really annoying issue where all of a sudden I just wont get a data connection even though there is a strong 4g signal. Any app that uses the internet will say there is a connection error, it just completely stops. I've been getting around it by having to turn on airplane mode and then turning it off. After I do that, everything starts connecting again, but it is insanely annoying. It seems to be getting more persistent, which is why I'm wondering if anyone else has experienced the same thing and if so, how did you fix it?
Thank you.
Oh and just in case, I'm running completely stock non rooted.
I've had the same problem the past few days. Don't know why & it happens fairly randomly. Only way to get around it is to connect to WiFi or turn data off/on.
Are you on KK or LP? Its happening to me on LP. I live in CO and its even worse closer to Denver I go.
Jammol said:
Are you on KK or LP? Its happening to me on LP. I live in CO and its even worse closer to Denver I go.
Click to expand...
Click to collapse
I'm on Lollipop. I think it happened on KK as well but it's definitely happening way more now.
I'm on Lollipop. Just started having the issue a few days ago.
I'm in Atlanta, both my devices have sluggish Internet def not what I'm used to. I called into tech support twice, was told they are doing network moderization....yea ok
Sent from my: SM-N910T/SQC100-4 T-Mobile 4G LTE
Having the same issue here in Atlanta was told it should be sorted out by today. I'm also using lollipop stock but rooted. In the meantime ive been forcing 4g by using the lte dialer since I've been having frequent changing to edge network since the update, but I'm still having issues with a strong 4g connection especially YouTube app.
Sent from my SM-N910T using XDA Free mobile app
Some serious hacking went on yesterday. I'm assuming some of the slowness was related. Many online services were slow and United Airlines was take down completely.
Sent from my SM-N910T using XDA Free mobile app
ShrekOpher said:
Some serious hacking went on yesterday. I'm assuming some of the slowness was related. Many online services were slow and United Airlines was take down completely.
Sent from my SM-N910T using XDA Free mobile app
Click to expand...
Click to collapse
Say what? Got some links?
Jammol said:
Say what? Got some links?
Click to expand...
Click to collapse
Yeah be call flying
http://www.wired.com/2015/06/united-flights-grounded-mysterious-problem/
Sent from my SM-N910T using XDA Free mobile app
I have the same problem. I had it on my s5 too
T-mobile
from what i heard t mobile was doing some cleaning up of files or upgrades i called them since i was getting 3g.
I too have been seeing the same data issue. It could just be coincidental timing but within days of loading LP I started having the issue. Even flashed the ROM again in case it was a bad flash.
As stated in OP I toggle airplane mode to fix. Annoying for sure.
PopRocks v5
T-Mobile
Bump.
I have been having this issue too ever since upgrading to Lollipop. I've had it on 2 versions of Poprocks and I now it have while using Rapture. Extremely annoying.
I got around it by rebooting the phone. I did not think of airplane mode or data on/off, i'll give that a shot. I was actually thinking maybe it's an APN issue, but no one in here mentioned that. For what it's worth I live in Southern California.
This issue is really starting to annoy me. One thing I do with my phone is stream music while I'm driving, and now I'm having all kinds of issues once my phone drops off wifi & has to switch to data. My music just stops playing & I have to toggle airplane mode to fix the issue, which isn't fun/easy while driving. Plus, when I do that my phone doesn't reconnect to my car's bluetooth. Ugh! I sure hope this gets fixed soon.
As an update, months later and I still have data drops all the time. Really annoying and it has definitely soured me on the Note 4. First with the GPS issue I was having (that was only fixed after getting a replacement) and now this data issue.
They only doing this too trick us into getting the note 5.
bipoler said:
They only doing this too trick us into getting the note 5.
Click to expand...
Click to collapse
After reading the new info on the Note 5, I'm not all that impressed. Don't get me wrong, it sounds like a good device, but I wasn't really impressed with the changes. I'm sure it'll still be a great phone, but I don't know if I'm willing to risk another year of the data issue. I may go with the new Nexus this year.
I've had this problem (5 bars, but can't even ping 8.8.8.8... but if I toggle data off & on, I instantly connect & usually get fast transfers) all the time (Fort Lauderdale area) for months, but it seems to have been particularly bad for the past few weeks.
Is this T-Mobile's fault? Or do Note 4s on other carriers (Sprint, Verizon, AT&T, etc) have the same problem?
My theory:
* The number of bars is determined mostly by the signal strength of the nearest tower
* The phone doesn't necessarily use the same tower for data that it uses for voice & SMS (in fact, when it's using HSPA+, it HAS to be simultaneously connected to two different towers).
* The modem firmware resists changing towers when there's an active data session unless it totally and completely loses sight of the tower it's currently using for data. I'm not sure whether it's the fault of Android or GSM network design, but data hand-offs seem to be "hard" rather than "soft", and always involve a connectivity break of at least a few seconds before the new one gets established.
* Thus, you can get into a situation (say, by driving a half mile or so) where the phone establishes a data connection with one tower, you drive *just* far enough away that it can still hear the original tower -- but can't actually complete a transmission without unrecoverable errors -- but voice & SMS messages go through the nearby tower. When you toggle data, it breaks the old data session, and establishes the new one from the strong nearby tower.
One thing that appears to have changed (in South Florida, at least) over the past few months: I always had problems with losing data connections while driving unless I disabled LTE, but NOW it appears to be doing the same thing even when GSM/WCDMA only is selected instead of GSM/WCDMA/LTE. It's like they figured out what was making LTE dysfunctional, then went out of their way to make HSPA equally dysfunctional.

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