Intermittent Data Connection on T-Mobile? - OnePlus 3T Questions & Answers

I recently updated to the newest Beta OTA (28_170627) a 1-2 days ago, and have not had any issues.
However this morning, after having the 3T on the charger overnight, my data connection seems to pop in for a second, then drops off. I am able to make calls/SMS, but the LTE icon pops up for a second with the exclamation point and then disappears to the "solid triangle" for about 3 seconds. This cycle just continues.
Anyone else have this issue? I tried the SIM card in an iPhone and it seems to connect fine, so I'm thinking it's either a software or hardware issue on the OnePlus 3T. I'm leaning towards not hardware as an ATT SIM card appears to work fine in it. I tried moving my T-Mobile SIM to the second slot with the same results.
Any suggestions on where to go from here before contacting OnePlus?
___
Update: Tried making a phone call and it showed HSPA ("H") during the call, and when I ended the call LTE/LTE+ is back up and running just fine again. Maybe something on TMobile's end clicked back on, or the phone got its act together. Regardless, hopefully it was just a one-off issue.

T-Mobile had issues this morning. It was reported. Nationwide issues. Happened one other time within the past month also.
Sent from my ONEPLUS A3000 using Tapatalk

I should have thought to look into that first... thanks for the information!

Related

[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?

Atrix HD - Having intermittent signal loss using Straight Talk.

The wife and I have Atrix HD phones that we bought used but in great condition a couple months ago. We purchased the Straight Talk at&t compatible micro sim kits from walmart.com and set up our service. We previously had Samsung Captivates also on Straight Talk and they worked flawlessly. I put in my APN settings and I get data and MMS perfectly but occasionally I get a red triangle where my signal bars should be and my phone says "Emergency Calls Only" and I will wait 30 seconds or so and my signal returns. There is no steady decline in signal that leads up to this. It goes from like 4 bars to a red triangle with a cross inside it.
I live in a fair sized town and have always had 3 or more bars of at&t service with phones in the past so I do not think its an issue with poor coverage. I am attaching pictures of my APN settings.
Any help would be appreciated.
Applehater87 said:
The wife and I have Atrix HD phones that we bought used but in great condition a couple months ago. We purchased the Straight Talk at&t compatible micro sim kits from walmart.com and set up our service. We previously had Samsung Captivates also on Straight Talk and they worked flawlessly. I put in my APN settings and I get data and MMS perfectly but occasionally I get a red triangle where my signal bars should be and my phone says "Emergency Calls Only" and I will wait 30 seconds or so and my signal returns. There is no steady decline in signal that leads up to this. It goes from like 4 bars to a red triangle with a cross inside it.
I live in a fair sized town and have always had 3 or more bars of at&t service with phones in the past so I do not think its an issue with poor coverage. I am attaching pictures of my APN settings.
Any help would be appreciated.
Click to expand...
Click to collapse
I'm having the exact same issue since switching to to the 4G LTE micro sim. It only seems to happen on mine when I'm connected to Wifi though. I get the red triangle intermittently. This never happened to me until I went from the old sim to the new one. Can't find anything on it yet.
same thing
The same thing is happening to me here as well but using a Net10 LTE sim card (same as straight talk basically). I notice it the most after I complete a phone call. It takes a minute or two to regain service again. This is really annoying. Would like to see a solution to this problem.
So I worked with Straight Talk support for about 5 days, back and forth, bounced to several reps throughout and nothing substantial has come of it. It seems a little better after they made "adjustments" to my account as they put it, but I still get disconnected from mobile data when on wifi.
Don't get me wrong, their support people were very responsive and seemed to genuinely want to help me, but in the end they said "your ticket has been open for more than 24 hours so it has been closed. If you continue to have issues please open a new ticket." Anyone else have any luck on this?
I also was having this problem found that if you edit existing att apn (phone needs to be rooted)with sqlite editor it seems to work fine.
tether also works fine this way.I am still not able to get lte to work with straight talk even with new sim.
Just to follow up. As usual, it seems with ST support, one rep tells me they have some things they can try once I call back on another line and then I get a new rep who says nothing can be done until 10 people complain about the exact same issue I'm having. I'm assured this is an isolated incident...
I went ahead and purchased a new SIM card (looks different than the first LTE card I had) in case I had a faulty SIM. Worked flawlessly for a day and now it's back to the same issue of cutting out completely throughout the day.
same problem here on wifi get red triangle (especially after phone call).
More since i switched from 4g sim card to lte sim noticed that data disconnect from time to time like make impossible to watch video flawlessly...
with old 4g was yes only 4g but never loss a bite....could watch anything also streaming tv.....now it is impossible.....
the end of the month going to switch to old sim and see if the problem is in the new sim cards they tried may be to limit access or is in the new service doesn't matter what sim card you possess..
we'll see...
htchd2fix said:
same problem here on wifi get red triangle (especially after phone call).
More since i switched from 4g sim card to lte sim noticed that data disconnect from time to time like make impossible to watch video flawlessly...
with old 4g was yes only 4g but never loss a bite....could watch anything also streaming tv.....now it is impossible.....
the end of the month going to switch to old sim and see if the problem is in the new sim cards they tried may be to limit access or is in the new service doesn't matter what sim card you possess..
we'll see...
Click to expand...
Click to collapse
Switching to my old sim was my first thought to. However when I tried it didn't work. I called ST and they informed me that once you switch sims, the old one can never be reactivated. On top of that they don't offer the non LTE sims anymore. Such a pain. Hope you have better luck though.
pentjaksilat8 said:
Switching to my old sim was my first thought to. However when I tried it didn't work. I called ST and they informed me that once you switch sims, the old one can never be reactivated. On top of that they don't offer the non LTE sims anymore. Such a pain. Hope you have better luck though.
Click to expand...
Click to collapse
Some one could correct me if I'm wrong here but I'm pretty sure this is a result of ROMS using a 4.4 rom. Modem crashes. If you want to test it run a Stock ROM... If you are already using a completely stock ROM then Idk what to tell you. But same thing happens to me using any version besides stock. And yes only when on WiFi
metalmike6 said:
Some one could correct me if I'm wrong here but I'm pretty sure this is a result of ROMS using a 4.4 rom. Modem crashes. If you want to test it run a Stock ROM... If you are already using a completely stock ROM then Idk what to tell you. But same thing happens to me using any version besides stock. And yes only when on WiFi
Click to expand...
Click to collapse
I'm on a 100% stock ROM, I haven't unlocked my boot loader, just rooted.
pentjaksilat8 said:
I'm on a 100% stock ROM, I haven't unlocked my boot loader, just rooted.
Click to expand...
Click to collapse
Then unlock your bootloader and try flashing different radios from the different stock fastboots we have. Depending on the fastboot I can have next to none or almost full in my bedroom. For me, ATT JB is in the middle, JB Mex Retail is the best, Bell ICS is the worst. ATT ICS was about the same as ATT JB.
skeevydude said:
Then unlock your bootloader and try flashing different radios from the different stock fastboots we have. Depending on the fastboot I can have next to none or almost full in my bedroom. For me, ATT JB is in the middle, JB Mex Retail is the best, Bell ICS is the worst. ATT ICS was about the same as ATT JB.
Click to expand...
Click to collapse
For the time being, I just switched to Aio and so far so good with LTE coverage and no disconnecting issues. If they return I'll try different radios as you suggested.
So I've been with Aio for about a week now and everything is working great (knock on wood). I've had 2 mobile data drops at work with Wifi turned on, but they only lasted for a second and I do have really bad reception here inside the building. Outside of that no issues at all so far. I'll update if anything changes.

[Q] N6 - No incoming & outgoing Calls, mobile data gone.

Having my Nexus 6 for almost a month. Things working perfectly in the starting(or after reset), but after two or three days, No incoming calls, no outgoing calls. No mobile data. Cant realy tell it as a mobile sometimes. Wifi is working good always. After reset, it is working properly for two or three days. Whenever it is not working, I am able to see a !-mark near the tower bar.
My mobile always connected to 4G when no wifi.
No Custom ROMS and no root. Plain Android given by google.
Anyone having this issue. Any suggestion?
Go get a new SIM.
Sent from my Nexus 6
I was begining to think i was the only one who had this problem!
Yesterday morning i woke up and to my suprise my signal bar had a (!) it it but it was still displaying my regual signal level.
I switched my wifi of and i couldnt get a data connection just the (!) sign. I got my girlfreind to give me a ring and see if a
call would go through which it didnt it just said that i was unavalible. I then desided that a reboot might sort the problem
but when i my phone booted back up i was presented with the holow triangle signal icon to say that i had to signal. I then
popped my simacard out thinking it could have just been a bit of dust on it. I gave it a little bit of a dust of and popped it back
into my phone and i was given the same no signal and emergency calls only yet it was picking up that there was a simcard inserted.
The day before i had flashed the alpha version of PA so my next thought was that this would be a ROM bug and went ahead and
flashed chroma which i was using prior to PA and i had had no issues with. Held my fingers crossed as it booted up but much to my
dismay i was greated with the same no signal problem but i went into the settings and searched for networks. Three was one of
the network it had picke dup so i tryed to reconnect to it but i got the toast to tell me i couldnt connectto the network and to
try again later. I checked the APN settings and it had automatically grabbed threes APN from the sim card so at this stage i was
completly baffled by them problem.
My next move was to try my sim in my girlfreinds phone and what do you know it worked a charm. As a last shot to check everything
was okay and i was upto date on my bills etc i gave three a ring and they told me there was nothing wrong with my sim and everything
was working as it should be and that it was a problem with my phone.
That brings me to the point i am at now completly baffled as to the problem and slightly angry at the 2 week old phone that had been working
perfectly up until now has suddnely desided to stop with no warning.
So you are not the only one and i expect their are more of us. I am going to flash the offical stock rom from google and see if that does the
trick but im not holding up much hope i feel like im going to have to contact google and find out where the problem lies.
New SIM which is working good in other mobiles
SilkyJohnson said:
Go get a new SIM.
Sent from my Nexus 6
Click to expand...
Click to collapse
I got this as new nano SIM from the retailer and seems like working in all other mobiles except Nexus 6. Also I can see lot of people having the same issue with Sprint Provided in US. One more Victim replied too.
greatleo said:
I got this as new nano SIM from the retailer and seems like working in all other mobiles except Nexus 6. Also I can see lot of people having the same issue with Sprint Provided in US. One more Victim replied too.
Click to expand...
Click to collapse
i reverted back to complete stock using the image from there site to no luck so i relocked the bootloader and took it back to the carphonewarehouse and they straight swapped it for a new one which is working perfectly
My sim died after a month. My calling went out and then only lte worked no 3g. Got card replaced and it works perfect now. I have US Cellular.
I've posted this in few other threads also, but I had also problem where I only had tgt exclamation mark no matter what I did. I solved the problem by waiting like 5sec before inputting my pin-code. If I input my pin code too fast after a boot, it will open my phone, but won't give me cellural network. This seems to happen in every ROM I've tried
Hi,
Solved the issue. Working fine after enabling request for SIM Pin and set my sim pin.
Usually i disable sim pin lock to have uninterrupted boot. But with ROM this is not working.
Enabling SIM pin request solves the issue.
Is this problem with carrier or Android L?
Sent from my Nexus 6 using XDA Free mobile app
greatleo said:
Hi,
Solved the issue. Working fine after enabling request for SIM Pin and set my sim pin.
Usually i disable sim pin lock to have uninterrupted boot. But with ROM this is not working.
Enabling SIM pin request solves the issue.
Is this problem with carrier or Android L?
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
I have not seen this issue on three devices I've owned with Lollipop. So it appears to be a carrier issue?

WiFi Calling error and International Roaming issues

Hello everyone.
I'm on a T-Mobile ONE plan and I've been abroad for almost 6 months now and for the past 5 months everything was working smoothly until this past month I've been getting some very annoying issues.
1) WiFi Calling no longer works and only works very rarely once every couple days for only a few hours. I keep getting the error message: ER081 - Unable to connect. This happens no matter which router i'm connected to.
I called T-Mobile about it and they said this was a known issue by Samsung. Samsung gave them a list of things to go by to try and troubleshoot the issue with a master reset being the last resort (which I cannot do). There are no timelines for if an update will be released that will fix this issue.
2) International Roaming no longer works 100% of the time. I keep getting a "No Service" notification with the message "Selected network (Vodafone) not available". (even though it shows 5 full bars). I have to constantly shutdown or pull out the battery and remove the SIM card, put it all back and turn the phone on for the network to come back again. However, this fix is very temporary as the error message comes back either after a few hours or after a few minutes (some times just 1 min!).
During the same T-Mobile call, we ran through a bunch of troubleshooting stuff but nothing was fixed and everything seems fine on their end. My SIM card was in good condition, networks are available, etc.
Are there any known solutions to fixing these issues or do I have to through in the towel and purchase a new phone?
Thank you,

Note 8 keep dropping connection once a while. Cannot call, text, data.

Hi! Thanks for reading my problem.
I have a tmobile note 8 that I have successfully switched to verizon firmware according to the guide here. It got the verizon boot logo and bloatware just like vzw phone.
It work perfectly after the switch, 4g lte ,call or text all work.
But it will drop after a while of use. It can be a few hours or few minutes. I cannot receive call, cannot access internet, cannot make call...
If I restart it all will become working again for a while. Any recommendation how to fix it? Thanks again.
I have a note 8 (SM-N950F/DS) for about three weeks now. I am using FP on AT&T network. When I just got it, especially while I was moving in the car or train, it would lost the data connection quite often even though showing full bar signal. I had to put it on air plane mode then switched back to reconnect.
Then after 1-2 weeks of use, the issue went away. I don't know it was due to the latest update (I am on Dec security patch now) or some kind of the phone learning my travel pattern.
Benson830 said:
Hi! Thanks for reading my problem.
I have a tmobile note 8 that I have successfully switched to verizon firmware according to the guide here. It got the verizon boot logo and bloatware just like vzw phone.
It work perfectly after the switch, 4g lte ,call or text all work.
But it will drop after a while of use. It can be a few hours or few minutes. I cannot receive call, cannot access internet, cannot make call...
If I restart it all will become working again for a while. Any recommendation how to fix it? Thanks again.
Click to expand...
Click to collapse
caiwh said:
I have a note 8 (SM-N950F/DS) for about three weeks now. I am using FP on AT&T network. When I just got it, especially while I was moving in the car or train, it would lost the data connection quite often even though showing full bar signal. I had to put it on air plane mode then switched back to reconnect.
Then after 1-2 weeks of use, the issue went away. I don't know it was due to the latest update (I am on Dec security patch now) or some kind of the phone learning my travel pattern.
Click to expand...
Click to collapse
Interesting, My phone lost it while I m at work... not even moving
For the longest time I thought was alone here. VZ Wireless Note 8 user here. My signal also just drops out of no where. When I look at my screen the 4G LTE upload up arrow is the only one turning up and down. Sometimes this issue will go away on its own after a few minutes or longer. But, randomly out of nowhere this started to happen. Few weeks now and counting I'm guessing it has something to do with a update that I recently upgraded to. I never had this issue when I first had my phone.....
I also have the problem.. Also Verizon branded Note 8.
I see a global Android update coming to possibly address this
From Android Headlines (AH):
"New Android Update For Galaxy Note 8 Improves LTE Stability"
"The latest Android update for the Galaxy Note 8 was designed to improve the stability of the phablet’s 4G LTE functionality as it specifically addresses a bug that occasionally caused interruptions of such connections, as revealed by a changelog published by Samsung earlier this week. The update appears to be rolling out on a global level, with its distribution officially starting on Wednesday, 15 days after the Seoul-based phone maker launched the latest security patch for the same handset."
Starting this month..
Anyone with ideas how to resolve this in the meantime?
I am still having this problem after oreo update.. I don't think I want samsung anymore..
Ok guys those who have Verizon, go to settings, mobile settings and change network to cdma and reset your settings. Turn off the phone, pop the sim tray out, power up ur phone while sim is out and turn off the phone again, this time push ur sim card in and turn on your phone. It should solve the problem of signal being dropped. Good luck.

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