Database Users

Sudden Loss of Data on Nexus S

Hey guys,
This is actually my first post here but I do A LOT of reading on this forum.
I didn't quite find anything regarding my question (or at least a solid answer), however, so I've decided to post it up.
Has anyone else experienced a sudden loss of data from time to time out of nowhere?
I go from having Full Green 3G bars to grey bars out of the blue. I've heard the green bars is to let you know that you are connected to Google services but I am not able to access anything that uses data.
For instance, when I open up the browser, I receive an error telling me there is no network connection. When I open up anything else that uses a data connection, Market, News, etc, I receive the same error about there not being a connection.
This would make sense if I was moving and going in and out of service areas, but it happens when the phone is simply sitting on my desk and not moving at all. I usually use it to listen to Pandora while at work and have noticed that the songs cut in and out due to this sudden loss of a data connection.
I went from a Nexus One to the Nexus S and have never, not once, lost my full 3G bars in this same exact location. I personally believe its a software bug of some kind and have high hopes for it being fixed in the future. The N1 had similar issues when it first launched and Google / T-Mo were able to remedy that for the most part.
I am actually on my third Nexus S because the first two had some type of hardware issue; the first one's back button didn't work or light up and the second one had a blown ear speaker and would sound like a blown speaker in a car. As an early adopter, I expected this, so it didn't bother me in the least bit.
ALL of them did the same thing, so I know it is not just limited to my exact phone. This is definitely something with the Nexus S in general (or the current build of Gingerbread).
Can anyone shine some light on this situation? Thanks in advance and keep up the great work here guys!
---------------------------------------------------------------
UPDATE: Here are a few steps that I have taken in order to solve my sudden loss of data issue. I'm not guaranteeing this will work for you, but it has worked for me and a couple of users here on the forum.
Do the following:
Activate / Use the Sim Card that came with the phone (this is to ensure you are using the latest sim cards)
Make sure you have a 4G internet plan. (No t-zones, No web2go -- FULL internet only)
Call T-Mobile and have ask them to Reset your phone with their Towers
Here's a more technical explanation posted by Johoja:
1) Having network selection set to manual ( i.e selecting 302490 or TMOBILE) will result in No Service on a reboot. Solutions: - Have to cycle airplane mode to get it to pick up service (can be done with automatically tasker) - OR Use automatic network selection. (you can force wcdma only but that will reset the SMSC which is annoying if you go in and out of wind away/home areas and you want to roam.)
2) Being in a area with no service for extended periods of time 5+minutes(subway, basement, etc) will result in a dead baseband, meaning once you come into an area with service the phone will not reacquire signal, airplane mode will not work as the baseband is now crashed, cant maunally search for a network. Have to reboot to get signal. Solutions: -Use tasker to cycle airplane mode on and off when in no service areas i.e) search signal 4 minutes, airplane mode on 10 minutes. This will keep the baseband from crashing and possibly save battery. -Use NoBars to accomplish thesamething ( taskergivesyou a bitmore flexibilty of course but harder to use) http://www.appbrain.com/app/nobars-b...omdryer.nobars - Use airplane edit to avoid turning wifi/bt off when airplane mode is on. http://www.appbrain.com/app/airplane...kalti.airplane
3) WCDMA perferred does not work. - No solution
http://www.google.com/support/forum/p/Google+Mobile/thread?tid=747f398a6c1bb2b9&hl=en&start=40:

I read one users response on a different thread regarding something similar to the issue that I am having.
They said T-Mobile told them to get a newer sim card and that this may remedy the problem. In my case, this has been the only constant in the 3 phones that I have been through. I have had the same sim card for about 3 years or so now.
I will try activating the sim card that came in the box with T-Mo to see if this remedies the problem. Since I'm at work right now I will have to try when I get home later.
Does anyone think this will have any affect what-so-ever?

The galaxy s phones when first released, all variants, had issues of signal dropping from full to zero bars while sitting in one place. I remember because there were YouTube videos of it All over and it was shortly after the apple antenna issue.
Not sure if or how it was ever resolved. But it seems that Samsung may just have this type of radio baseband performance if we see all these individual units doing this. I don't know maybe others can respond.

I have the same issue as the OP. I travel to the same location weekly with NEXUS ONE, signal never drops in the T-MO Country here locally, and streaming CNET POD CAST never a hiccup, however, with the new NEXUS S, I would lose DATA Connection only, while the 3G will show full signal. I had to reboot the phone to get the DATA back.
is it the S issue or 2.3 issue?
food for though....

If you have T-zones or Web2go or Phones 1st web, you will have problems

I had the same problem too, now I fixed the problem. The thing was that had the wrong data plan on the NS, i had my old web plan from my hd2 which seems like different from the one for the NS. I restarted my phone after 5 mins off and now i have my internet working beautifly. A T-Mobile rep said that it was an error in the system that made the phone think that that was the right plan for the NS for a few. A glitch you may say, but all you have to do is put the right data plan that all, easy. Hope this helped and have a wonderful holidays everyone.
Sent from my Nexus S using XDA App

this is happening to me too, last night for a little while and today for about hte last 4 hours can't get connection back. i have full white bars, with 3g icon but can't access anything

So I activated the new sim card last night and I'm still having the same problem. Albeit it doesn't happen as frequent, but it still does it nonetheless.
I will call T-mo again to verify my plan. I am on a 1500 Minute Family Plan which includes unlimited data and messages. I will see if they need to tweak something and let you guys know if this remedies the problem.

Ok, it seems like the issue has been resolved after I spoke to T-Mobile earlier today.
The rep on the phone verified that the data plan I was on was in fact the correct one. He said he was going to reset the signal from the towers to my phone to see if this would resolve the issue. He asked me to turn my phone off for about 15 seconds after we hung up.
Since then, I haven't seen the problem arise again so my guess is that it somehow fixed whatever was going on.
I'll let you guys know if this changes and the problem occurs again.
Sent from my Nexus S using XDA App

peakaboohaha said:
I have the same issue as the OP. I travel to the same location weekly with NEXUS ONE, signal never drops in the T-MO Country here locally, and streaming CNET POD CAST never a hiccup, however, with the new NEXUS S, I would lose DATA Connection only, while the 3G will show full signal. I had to reboot the phone to get the DATA back.
is it the S issue or 2.3 issue?
food for though....
Click to expand...
Click to collapse
What's with the CAPS? ?
On topic: i have a captivate and I can confirm that all galaxy S phones had droppend data. An official ota update fixes it so maybe you guys need to wait for something official. Isn't there a new firmware for the nexus S already? Try flashing that and see if you still have issues.
Sent from my GT-I9000 using XDA App

Doesn't every android phone from samsung have this problem?
I know the Moment has that problem, after 3 updates samsung called it quits, I still have to reboot mine 2 to 3 times a day for data lockups.

@timur525 Yea, I'm already on 2.3.1.
I manually updated the first hour it came out hoping that it would solve the issue. The problem was still there after the update.
Sent from my Nexus S using XDA App

I have exactly the same issue as the OP. Extremely annoying to reboot the phone every time it happens. One thing I have noticed is that my phone doesn't know its number. If I go to settings, about phone, the number says unknown.
Sent from my Nexus S using XDA App

Memnoch30 said:
I have exactly the same issue as the OP. Extremely annoying to reboot the phone every time it happens. One thing I have noticed is that my phone doesn't know its number. If I go to settings, about phone, the number says unknown.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
That shouldn't affect anything. My number shows up in status.
I had this issue resolved a few months ago as the push-to-talk app Tikl requires this in order to use it.
I was having the problem even with my number showing up. Call T-Mobile and have them reset you with the towers like they did for me and see if that helps you too.
Sent from my Nexus S using XDA App

I posted about this same issue on wrong section of the forum. Ive had this issue ever since samsung vibrant. I have applanet installed on my phone and some of the app that i installed accessed my apn and totally changed my apn setting to "Sirious application disabled.epc.tmobile" or something like that so i wyped everthing off from the phone and so far i havent had the issue ever since yesterday. Also i had the locale and language setting to korean so im thinking that might be causing it also.
Sent from my Nexus S using XDA App

adamr240 said:
Doesn't every android phone from samsung have this problem?
I know the Moment has that problem, after 3 updates samsung called it quits, I still have to reboot mine 2 to 3 times a day for data lockups.
Click to expand...
Click to collapse
That's what I remember too. I think its just an issue with the radio Samsung uses in all their phones. Might not be a way to fix it if even their new phones like the nexus s still have this issue. They prob would have tweakdd it by now if they could.

Same problem here. Xmas eve on shift and I have a phone that had no connection whatsoever (not even phone capabilities) this may be the one thing that takes the phone back. (If it happens again)

robstunner said:
Same problem here. Xmas eve on shift and I have a phone that had no connection whatsoever (not even phone capabilities) this may be the one thing that takes the phone back. (If it happens again)
Click to expand...
Click to collapse
Have you called T-Mobile to see if they can give you a reset to the towers?
I had this done yesterday afternoon and haven't had the problem again since.
Also, if you'really using an old sim, I would suggest activating the one the phone came with just to be on the safe side.
If that doesn't help you then I would at least wait until just before your return period ends to see if there will be an update to address the issue.
Sent from my Nexus S using XDA App

Never had this problem with the captivates I've had.
adamr240 said:
Doesn't every android phone from samsung have this problem?
I know the Moment has that problem, after 3 updates samsung called it quits, I still have to reboot mine 2 to 3 times a day for data lockups.
Click to expand...
Click to collapse
Sent from my Nexus S using Tapatalk

Epiksol said:
Have you called T-Mobile to see if they can give you a reset to the towers?
I had this done yesterday afternoon and haven't had the problem again since.
Also, if you'really using an old sim, I would suggest activating the one the phone came with just to be on the safe side.
If that doesn't help you then I would at least wait until just before your return period ends to see if there will be an update to address the issue.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Ill give them a call on Sunday
Sent from my Nexus S using Tapatalk

Vibrant randomly loses cell signal ( No network)

Hey guys,
My Vibrant is losing cell signal on its own. It happens randomly like once every couple days. I tried switching to Airplane mode but then I can't switch back to normal mode. This happened on stock, Trigger and Biwinning ROMs.
I have tried reseating the sim card but it still happens. I have also tried in GSM only and GSM and WCDMA mode but that doesn't help either.
The only fix that works is take out the battery and put it back in again. Does this mean I have a bad phone or is there something that can be done?

Are u wiping between flashes??

This has been happening to me on the stock Odin 2.2 build. Think it's the newer KB5 build. Samsung is so full of fail.
Sent from my SGH-T959 using XDA Premium App

If you guys are talking about internet randomly stop working when your on the browser, then yes i can say i have data dropouts too. Im currently on modem KB5 idk if its that or t-mobiles network.

Flash different modem.

krazie1 said:
If you guys are talking about internet randomly stop working when your on the browser, then yes i can say i have data dropouts too. Im currently on modem KB5 idk if its that or t-mobiles network.
Click to expand...
Click to collapse
Oh I get that too, but I don't think the thread is talking about just data dropping. I woke up this morning to a completely disconnected phone. Not receiving calls. Not receiving texts (not that I ever get any). Nothing. No SIM card found. This after the phone was working perfectly the night before. Nothing changed.
It's really strange. Might try flashing another modem...would that help the SIM card not being recognized?

Thanks guys, I just tried Odin format repartition>KB5 stock and still got the error.
Now it's either the bad sim, kb5 sucks or my phone has a problem. I'm getting a new sim tomorrow
Sent from my SGH-T959 using Tapatalk

VICosPhi said:
Thanks guys, I just tried Odin format repartition>KB5 stock and still got the error.
Now it's either the bad sim, kb5 sucks or my phone has a problem. I'm getting a new sim tomorrow
Sent from my SGH-T959 using Tapatalk
Click to expand...
Click to collapse
I just flashed the KA6 modem. I'll let you know if it helps.
Sent from my SGH-T959 using XDA Premium App

Thanks inconceeeivable. I flashed KB1, we'll be able to narrrow it down soon.. I love this community

My phone went from 3G to EDGE to nothing in about an hour and I restarted the thing 2-3 times and nothing happened. When I finally went to work which is 15 miles away I had full signal no problem. Perhaps it's a network thing?

BrianH12 said:
My phone went from 3G to EDGE to nothing in about an hour and I restarted the thing 2-3 times and nothing happened. When I finally went to work which is 15 miles away I had full signal no problem. Perhaps it's a network thing?
Click to expand...
Click to collapse
Thanks but I don't think its network, I get the same problem in Chicago as well. Also my wife's vibrant shows full signal. We traded sim cards and I still see the issue so its NOT sim card either. Now its narrowed down to:
1) KB-5 modem
2) Phone itself
I am still checking and will update the post

VICosPhi said:
Thanks but I don't think its network, I get the same problem in Chicago as well. Also my wife's vibrant shows full signal. We traded sim cards and I still see the issue so its NOT sim card either. Now its narrowed down to:
1) KB-5 modem
2) Phone itself
I am still checking and will update the post
Click to expand...
Click to collapse
I'll Answer your choice....its choice 1) KB5 Modem. This modem is terrible i been using it on 3 different roms and while on this modem my data would freeze/stop randomly really noticeable on downloads and browser. I would be on the browser searching a page and all of a sudden it would not load anymore it would stop. I recently switched back to KB1 and my issues are solved no more data stops/drops. KB5 is really good on GPS but the data is horrible with the freezes/stops. Hope i helped you choose better. Stay away from KB5 if you notice browser loading stopping.

krazie1 said:
I'll Answer your choice....its choice 1) KB5 Modem. This modem is terrible i been using it on 3 different roms and while on this modem my data would freeze/stop randomly really noticeable on downloads and browser. I would be on the browser searching a page and all of a sudden it would not load anymore it would stop. I recently switched back to KB1 and my issues are solved no more data stops/drops. KB5 is really good on GPS but the data is horrible with the freezes/stops. Hope i helped you choose better. Stay away from KB5 if you notice browser loading stopping.
Click to expand...
Click to collapse
Thanks for sharing your feedback
Today I got the signal error on kb1. Sadly this seems to be a hardware issue with my phone. I also checked to see what my baseband version shows and it shows "unknown"
Then I checked my IMEI and I got "your imei is "" "
So yeah that sucks. The only way to get signal back is take out battery and put it back in.
Sent from my GT-I9000 using Tapatalk

you can try to flash other modem.

lidroid said:
you can try to flash other modem.
Click to expand...
Click to collapse
I did, still the same issue...

I thought it was just me. It was horrible about 2 weeks ago. 2 different modems different solve the problem so I was convinced it was a network problem. I waited it out and they seemed to have fixed it. Instead if an x most of the day I have 1 or 2 bars of edge like before lol

Haven't noticed problems on KA6, but I haven't been using it heavily. (Switching between Vibrant and HD7)
Might be worth a try.
Edit: Also, have you tried Bionix? I know that the same phone never had any problems on 1.3.1. Think it has KB1 though, so it may not make a difference for you.
Sent from my SGH-T959 using XDA Premium App

Thanks guys, I did try Bionix nextgen which I believe is KA6 and didn't see the problem but again its just been 12 hours so far. I bought a dead vibrant with broken screen and just replaced the sim assembly. Let's see if that fixes the problem...

You're not alone. I have the same problem and I've flashed every modem I available. Sometimes I lose cell signal but not often. The data signal is what's spotty for me.

Thanks Blown89.
So when I lose signal, I tried checking IMEI *#06# and I get "null/null" and yes my efs is fine. Once I take out the battery and turn on the phone, it starts to work fine. Tried all software resets...
Any ideas?

[Q] Loosing Data Service

This is my 3rd Sprint S4 over the past few months. All of the devices are loosing the 3g icon but will show bars. Voice and text works fine, data and 4g does not, i have noticed it usually happens when i leave a WiFi area and it has trouble switching back over to cell data. I can reboot the phone and about 80% of the times it will return to normal. I have used odin to reload to factory. I had my phone rooted only and recently install the Triforce rom to see if it was a software or Kernel issue. Same thing is happening on that rom as well. It doesnt matter where i am so i dont beleive its a tower issue. Any idea?

This happens to me as well. Just Sprint being crappy. Try turning airplane mode on and off, same effect as a reboot but faster.

I tried the airplane mode toggle but didnt seem to fix it. If i use even the "Hot reboot" option in triforce rom that doesnt fix it either.

Assuming this this is the same issue I always experience, there is no fix. It's a network thing. Is there 4G in your area?
What happens to me is my phone will be on 3G, then start receiving 4G, but it doesn't recognize that the data service is now different, so nothing works for 15+ minutes or until I toggle airplane mode on/off.
I take it you've tried just turning WiFi off?

Haha, yea, welcome to Sprint. Enjoy losing data when it's least convenient (such as when you need to use navigation or missed your exit and need to be rerouted). Oh well, the price we pay for unlimited data, right?

I have noticed the same thing since I activated my LTE radio. LTE is expanding in my area so I constantly go in and out of 3G and LTE service. Sometimes when this happens data just ****ing stops working until I enter airplane mode and then come back out of it (a reset works as well). For some reason (or it is just a coincidence) The problem has amplified since installing 4.3. Has anyone else noticed an increase in this problem since upgrading? This is absolutely a Sprint problem? Do we know that people have this same issue with other Sprint phones?

I have the same problem. From wifi to f data takes a little bit of time for it to switch over especially since the data toggle is gone with the 4.3 update. Unlimited plan is water downed from my experience compared to tmoblie. But tmoblie service was horrible.
Sent from my SPH-L720 using xda app-developers app

emerald2382 said:
I have the same problem. From wifi to f data takes a little bit of time for it to switch over especially since the data toggle is gone with the 4.3 update. Unlimited plan is water downed from my experience compared to tmoblie. But tmoblie service was horrible.
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Well Sprint's speed has always been an issue for most of us. That is no surprise. I at least expect to to work AT ALL which apparently it is incapable of doing recently.

JamieP87 said:
This is my 3rd Sprint S4 over the past few months. All of the devices are loosing the 3g icon but will show bars. Voice and text works fine, data and 4g does not, i have noticed it usually happens when i leave a WiFi area and it has trouble switching back over to cell data. I can reboot the phone and about 80% of the times it will return to normal. I have used odin to reload to factory. I had my phone rooted only and recently install the Triforce rom to see if it was a software or Kernel issue. Same thing is happening on that rom as well. It doesnt matter where i am so i dont beleive its a tower issue. Any idea?
Click to expand...
Click to collapse
If wifi is on 3g/4g is not there,, turn off wifi and you should see icon,, if you see bars it's most likely working :sly:
Edit just re read your post, I have the same issues sometimes and as posted above toggling on and off typical works for me,, good luck
Also is your network set to
CDMA/LTE/EVDO? Just throwing out ideas
Sent from my SPH-L720 using Tapatalk

I get this issue all the time & I have to do a battery pull to get my phone working again. Anyone flash a new modem which fixes this? The SGS4 is 10x worse than my HTC EVO 3D was with this issue.

pcfascist said:
I get this issue all the time & I have to do a battery pull to get my phone working again. Anyone flash a new modem which fixes this? The SGS4 is 10x worse than my HTC EVO 3D was with this issue.
Click to expand...
Click to collapse
Seems like a hardware problem based on your description. I am fully convinced that this whole flashing modems things is just a feel-good measure for people who have exhausted all other options. It was big in the Galaxy S2 days, but I have never seen any measurable difference between modems in any meaningful metric on that device. At least not one that could not be attributed to other factors such as signal quality and network load, and nothing consistent. A different modem isn't going to fix a hardware fault or magically improve Sprint's awful service.

LTE keeps dropping

I was just wondering if anyone else has problems with their LTE dropping to 3G out of the blue. This happens when I am at home in a really strong LTE area. My wife's Nexus 6 doesn't do this, it stays in LTE. This only seems to happen to me when I am at home.
I am running the latest PN ROM, latest vendor and gapps, and I have tried numerous kernels. Both my wife and I are using the Verizon sim through Straight Talk.
Thanks for any help or ideas you might have.
Sent from my Nexus 6P using XDA-Developers mobile app

kclive said:
I was just wondering if anyone else has problems with their LTE dropping to 3G out of the blue. This happens when I am at home in a really strong LTE area. My wife's Nexus 6 doesn't do this, it stays in LTE. This only seems to happen to me when I am at home.
I am running the latest PN ROM, latest vendor and gapps, and I have tried numerous kernels. Both my wife and I are using the Verizon sim through Straight Talk.
Thanks for any help or ideas you might have.
Click to expand...
Click to collapse
I've made a post that mentioned this. There is a issue affecting only the Nexus 6p Phones. Google supposedly fixed the issue. Although Some seems are still having issues. Apparently it's stemming from the GPS. They have a workaround that's helping some. Have your carrier clear your location, disable your GPS, Reboot phone. Uninstall updates for Google connectivity services, and try to update it. And again reboot.
I continued having issues even though they fixed it, so I went cleared out system reflashed stock images, rebooted, via mskip toolkit. Been running pure stock except root, and been working fantastic with no issue. Hope this answers your question. Good Luck!

This has happened to me like... Once or twice since I've owned my 6P (~7 months) on Verizon (Non-MVNO VZW). Flopping airplane mode, Forcing the modem to reassociate would get it to jump back on LTE. The issue I've had more frequently (20-30 times since purchase) is the phone just falling off all data completely.
If VZW LTE coverage in your area is good (It's insane here in Florida) I'd recommend trying forcing LTE only.
Dial *#*#4636#*#* from the phone dialer. Then under the "Phone Information" menu. Hit the drop down that should currently say "LTE/CDMA/UMTS Auto (PRL)" and set it to LTE.
This is going to cause one of two things.
1. It'll fix your problem, Meaning it was actually some kind of provisioning/priority issue. Your phone for some reason couldn't hang on LTE, So it fell back to 3G to maintain connectivity. Even though it would've worked if it would've tried LTE again.
2. You'll still fall off LTE. But this time, Instead of falling to 3G, It'll disconnect completely.
If it ends up being #1, I'd try swapping SIM's with your wife for a day or so, Just to see if it follows the phone or the sim card.

Just started having this issue yesterday.
Before that almost never.
I also just upgraded to the August security path.

Well my calls dropped out 3 times, On Oputs network Here in Austrlia and i was on 3G and good signal, Lastest Pacth and Stock anroid.

Factory t-mobile S7e losing mobile network connectivity

so this is the second S7e and second SIM that I have been having this issue with. The phone will lose connection to the mobile network and the ONLY way to recover is to reboot phone. Reset Network Settings doesn't do anything. Toggle airplane mode doesn't do anything. Search for Network Operators doesn't do anything. I have a third phone on the way - but has anyone around here heard of or experienced similar? Am I missing something that I should be doing to correct this?
Thanks in advance

I too have this problem. Got a replacement refurbished phone under warranty and the phone has this problem

krishelnino said:
I too have this problem. Got a replacement refurbished phone under warranty and the phone has this problem
Click to expand...
Click to collapse
Did you pay the $20? I didnt want to pay the 20 so i sent the device to samsung. Should get it back friday or monday. The issue is definitely phone related. Im using a verizon s7 now and no issues like that arose. I even tried new sim.. My father is having same issue t-mobile s7 edge

Yes i had to pay 20. And it's disappointing I am having this issue with the replacement phone. I am having this problem on the U firmware as well.
Sent from my SM-G935U using Tapatalk

I've suffered the same issue from time-to-time and just do a restart....annoying as hell to be honest

Are you guys always in the same location when this is happening or is it just whenever and wherever? Or is it happening a one certain place where cell signal isn't that great? I had this same issue BUT only in my house so I had to get a network range extender from t-mobile to use at home.

This happens to me all the time. It's so annoying. At work, in the car, at home--it doesn't matter where I am. Have reset firmware multiple times and even rolled back once too. I think it has to do with the latest software because I never had this issue before the Fall/Winter. Hopefully Nougat fixes this!

Quickvic30 said:
Are you guys always in the same location when this is happening or is it just whenever and wherever? Or is it happening a one certain place where cell signal isn't that great? I had this same issue BUT only in my house so I had to get a network range extender from t-mobile to use at home.
Click to expand...
Click to collapse
I happens randomly in different places. For me i lose complete signal, and then only get back signal without data. I have to restart when this happens to get back data. Annoying as hell !

frappe33 said:
so this is the second S7e and second SIM that I have been having this issue with. The phone will lose connection to the mobile network and the ONLY way to recover is to reboot phone. Reset Network Settings doesn't do anything. Toggle airplane mode doesn't do anything. Search for Network Operators doesn't do anything. I have a third phone on the way - but has anyone around here heard of or experienced similar? Am I missing something that I should be doing to correct this?
Thanks in advance
Click to expand...
Click to collapse
I am having the same problem, this will be my 3rd phone 4th sim. I wish I knew how to fix it

I would try flashing different radios/modems, its worth a shot. Maybe try flashing the "U" firmware radios.

Nougat will fix it
My wife and I had the same issue on our tmobile s7 edge ... we got the 7.0 beta and now the issue is gone .... I bet it's radio and software related ... 7.0 will be out by the end of the month hope that helps...

I had this issue with my phone, and it was a huge pain. The biggest concern: I didn't know when my phone was off network (voice, data, etc.). The fix, for me, was simple: a new SIM card.

You may have an issue from a rejected permission on an app.
Had the same issue before but I did a hard reset and realised that I changed permissions on an app that wasn't written for 6.1.

ronstopable12 said:
My wife and I had the same issue on our tmobile s7 edge ... we got the 7.0 beta and now the issue is gone .... I bet it's radio and software related ... 7.0 will be out by the end of the month hope that helps...
Click to expand...
Click to collapse
I hope so! Been waiting for that before I try anything drastic, even though this issue is a huge pain in the ass. I'm glad others have come out of hiding to express their concerns with it as well. I thought I was the only one for the longest time having this issue.
---------- Post added at 02:20 PM ---------- Previous post was at 02:19 PM ----------
jimfun said:
I had this issue with my phone, and it was a huge pain. The biggest concern: I didn't know when my phone was off network (voice, data, etc.). The fix, for me, was simple: a new SIM card.
Click to expand...
Click to collapse
Many of us have tried new SIM cards, but it's worth a shot if it's still not working consistently after Nougat is released.
---------- Post added at 02:22 PM ---------- Previous post was at 02:20 PM ----------
geeserver said:
You may have an issue from a rejected permission on an app.
Had the same issue before but I did a hard reset and realised that I changed permissions on an app that wasn't written for 6.1.
Click to expand...
Click to collapse
My and my friend's phones are both running pure 100% OEM Tmo stock without any apps disabled or touched at all and we have this issue and have done multiple resets. Pretty sure it's an actual hardware defect, or hopefully just a software one with the modem/radio.

krishelnino said:
Yes i had to pay 20. And it's disappointing I am having this issue with the replacement phone. I am having this problem on the U firmware as well.
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I was thinking about going that route. But I wasnt sure what condition the phone would be. How was you condition?
I sent mine to samsung and the things they replaced is the Coaxle cable "antenna" replaced 3 of them. I have been using the s7 from verizon on the U firmware so havent seen if it is fixed.

4ringsa6 said:
I was thinking about going that route. But I wasnt sure what condition the phone would be. How was you condition?
I sent mine to samsung and the things they replaced is the Coaxle cable "antenna" replaced 3 of them. I have been using the s7 from verizon on the U firmware so havent seen if it is fixed.
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I received a refurb. Other than this problem, the phone is alright. I noticed this problem on receiving the phone it was running on T firmware. Then I switched to U firmware and radio but no difference. I called customer support yesterday, they said to go to a retail store to get the phone replaced. My worry is going through this process again and if I receive a bad device again what to do? After all refurb phones are like playing Russian roulette!
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I just had this start happening on mine... I really wish they would release nougat already. It is ridiculous they won't post an Odin flashable version of the release candidate if it does indeed fix the issue.
I also think its a specific tower configuration that is causing the issue that the radio can not understand. (Maybe 3xCA). Its happening in the same areas every time.

I just started having this problem in the past month. All at once I've been getting BT sometimes turning off, mobile networks failing to reconnect after I visit a no/low signal area (such as after a plane trip when the phone was in airplane mode). I've also seen wifi mode fight my attempts to turn it back on sometimes - toggling itself on and off a couple of times per second until I poke at enough settings to stop it. When BT turns itself off I have trouble turning it back on, sometimes it just goes back on, sometimes it refuses after a number of tries and if I wait an hour it goes back on just fine.
The folks at a BB Samsung kiosk said they could reflash it if I wanted to go that route, but that the nougat release would be out soon so it might be better to just wait for that. Has anyone had a Samsung rep re-image their phone to try to solve this?

flarbear said:
I just started having this problem in the past month. All at once I've been getting BT sometimes turning off, mobile networks failing to reconnect after I visit a no/low signal area (such as after a plane trip when the phone was in airplane mode). I've also seen wifi mode fight my attempts to turn it back on sometimes - toggling itself on and off a couple of times per second until I poke at enough settings to stop it. When BT turns itself off I have trouble turning it back on, sometimes it just goes back on, sometimes it refuses after a number of tries and if I wait an hour it goes back on just fine.
The folks at a BB Samsung kiosk said they could reflash it if I wanted to go that route, but that the nougat release would be out soon so it might be better to just wait for that. Has anyone had a Samsung rep re-image their phone to try to solve this?
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If you were able to fix without a reboot you didn't have the same issue as this.

rocket31337 said:
If you were able to fix without a reboot you didn't have the same issue as this.
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I guess I wasn't clear about that as I have several problems that are probably related, but behave a little differently.
BT dropping - can usually turn it back on, but sometimes it refuses. Usually don't need to reboot to fix this.
Wifi dropping - often have trouble turning it back on and have seen the widget toggle off and on repeatedly by itself. Sometimes have to reboot to fix that.
Mobile Network data (and voice sometimes) dropping - usually have to reboot. I think I may have recovered that once without a reboot, but the other few times it's happened in the past month since it started I have rebooted and that fixed it in all but one of the reboots - one time I rebooted and still had to fiddle with it a bit after the reboot before it came back. That may have been because I played too much with the network settings before the reboot and so had to undo that damage after the reboot. But, definitely rebooting is a fairly reliable step in fixing this problem.
All 3 started happening around the same time which is why I thought it was a software issue (I remember a small update a little over a month ago, but forget the details of it). It's nice to hear that others also have the mobile network problem, but if that is isolated in those cases then maybe I'm not seeing exactly the same problem. But, it is clear that rebooting is almost always required to get my mobile network data back so that again suggests that at least that part is the same as what this thread is discussing.
In looking at the T-Mobile updates page for the S7 Edge I see that the version I have (G935TUVU4APK1) was updated in early November - which tracks when I started having problems, and it includes a fix for "Domestic data roaming improvements", which definitely sounds like they may have played with the radios.
I am so ready for the Nougat update...