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

[Q] Reception isuue (no signal) with NAND Android on HD2

Well Ive switched several different ROMs, radios, and kernels so far, and I'm still getting poor reception issues. I've noticed when I push a button to turn the screen on from sleep mode it will say 'no signal' real quick then it goes away. But Ive also noticed that sometimes even with 'no signal' I can still make & receive calls but not other times So far this is the last issue I need to figure out with android for my hd2, I cant afford to be missing calls. Ive checked the battery usage info, and cell standby says my time without signal is usually between 50 and 75% help please

lowrider262 said:
Well Ive switched several different ROMs, radios, and kernels so far, and I'm still getting poor reception issues. I've noticed when I push a button to turn the screen on from sleep mode it will say 'no signal' real quick then it goes away. But Ive also noticed that sometimes even with 'no signal' I can still make & receive calls but not other times So far this is the last issue I need to figure out with android for my hd2, I cant afford to be missing calls. Ive checked the battery usage info, and cell standby says my time without signal is usually between 50 and 75% help please
Click to expand...
Click to collapse
There is a 13 page thread on this with so far new resolution the only sure fire fix right now is leave the phone in 2G or Edge and you will stay continually connected, not a great fix but it keeps the phone locked onto the network

TheCoutures said:
There is a 13 page thread on this with so far new resolution the only sure fire fix right now is leave the phone in 2G or Edge and you will stay continually connected, not a great fix but it keeps the phone locked onto the network
Click to expand...
Click to collapse
Is this really still a problem?

0vermind said:
Is this really still a problem?
Click to expand...
Click to collapse
Yes and so far no fix
Sent from my HTC HD2 using XDA Premium App

What keeps enabling Background Data??

I am continually having to disable the Background Data option on my DZ, because something keeps re-enabling it in the background without my knowledge. This happens several times a day. How can I tell which app is enabling it?

Could be Market. You cant log in if you dont have background data enabled. So maybe its got a mind of its own and turns it on.

sometimes could be your people or facebook or email syncing in the background

Maybe silly question but have u disabled "allow always on mobile data" in mobile networks in settings?
Sent from my Desire Z

Shambolicuk said:
Maybe silly question but have u disabled "allow always on mobile data" in mobile networks in settings?
Sent from my Desire Z
Click to expand...
Click to collapse
If you mean the "Enable always-on mobile data" option then yes I have that unchecked. Is there some way of auditing which apps may be changing the Background Data setting?

Disable automatic syncing, if that doesn't do it you're better of reflashing
Sent from Space using Tapatalk Pro

The Communicator said:
Disable automatic syncing, if that doesn't do it you're better of reflashing
Sent from Space using Tapatalk Pro
Click to expand...
Click to collapse
Auto-syncing is already disabled. Unfortunately it hasn't helped.
I haven't flashed the phone before so the prospect of doing it (and potentially bricking it) concerns me a little. I'm on software version 1.82.161.1 - is this a fairly recent version?

itm said:
Auto-syncing is already disabled. Unfortunately it hasn't helped.
I haven't flashed the phone before so the prospect of doing it (and potentially bricking it) concerns me a little. I'm on software version 1.82.161.1 - is this a fairly recent version?
Click to expand...
Click to collapse
If I'm not missing anything you don't want your phone to connect at all? Then put something invalid for internet connection APN.

I've already done that. It's the drain on battery that I was concerned about - i.e. continually trying to connect

itm said:
I've already done that. It's the drain on battery that I was concerned about - i.e. continually trying to connect
Click to expand...
Click to collapse
why dont you just disable mobile network untill you need it?

That's what I meant when I said I'd done it - I have the mobile network disabled by default. Presumably with background data enabled it will still attempt to connect frequently, and consume power, even if data is disabled?

itm said:
That's what I meant when I said I'd done it - I have the mobile network disabled by default. Presumably with background data enabled it will still attempt to connect frequently, and consume power, even if data is disabled?
Click to expand...
Click to collapse
Could be, there is really ****load of threads on this forum about finding out what app keeps your phone in wakelock.
Here is one.

itm said:
That's what I meant when I said I'd done it - I have the mobile network disabled by default. Presumably with background data enabled it will still attempt to connect frequently, and consume power, even if data is disabled?
Click to expand...
Click to collapse
What the heck are you using your phone for then? If you dont want any mobile data, just turn on airplane mode and then enable WiFi for data.

U sound a bit too paranoid. The chances of bricking your phone from flashing your phone one time are slim to none. Sounds like the rom is borked to me. It reminds me of people who are scared to death to click anything in windows cause there scared there gonna break something. There are people on here who WANT to brick there phone cause they want to send it into repair and not have tmobile see its s-off and can't even make the phone brick when purposely trying to.
You seem smart enough, as long as you can read your not gonna mess nothing up! They make these electronic devices idiot proof cause 99% of the users of them are idiots! (Xda users not included). If they were that easy to bust no one would even use a smart phone cause you would be hearing about it every day from all your friends/acquaintances!
Sent from my HTC Vision using XDA Premium App

martonikaj said:
What the heck are you using your phone for then? If you dont want any mobile data, just turn on airplane mode and then enable WiFi for data.
Click to expand...
Click to collapse
Funnily enough I use it to make phone calls. When I need the occasional bit of data (maybe 2-3 times a day) I'll switch on wifi or 3G temporarily for that purpose. That way I may still have some battery left by the evening. Unless there's something else that keeps starting up and draining the battery of course....

itm said:
Funnily enough I use it to make phone calls. When I need the occasional bit of data (maybe 2-3 times a day) I'll switch on wifi or 3G temporarily for that purpose. That way I may still have some battery left by the evening. Unless there's something else that keeps starting up and draining the battery of course....
Click to expand...
Click to collapse
Honestly, like the other poster said I think you're being a bit too paranoid. Just let your phone do its thing. Turn off mobile data, and turn off any app's auto-sync functions. If you absolutely don't need your phone to use data other than occasional WiFi it won't make a difference. You're not going to lose battery in any significant way with what these apps are doing.

martonikaj said:
Honestly, like the other poster said I think you're being a bit too paranoid. Just let your phone do its thing. Turn off mobile data, and turn off any app's auto-sync functions. If you absolutely don't need your phone to use data other than occasional WiFi it won't make a difference. You're not going to lose battery in any significant way with what these apps are doing.
Click to expand...
Click to collapse
Ya or use a garbage Nokia phone and do your data stuff on the computer!
Sent from my HTC Vision using XDA Premium App

Also, if you only need data 2-3 times per day, you should stop paying for a data plan.

I'm on a PAYG plan - 20p per Mb - so it's not a problem.
Incidentally I had a first attempt at rooting yesterday - followed the noob guide elsewhere in this forum but didn't get very far. I'm reasonably technical (a former developer) but the whole rooting thing is far from painting by numbers.
I have an open thread somewhere else on this issue

[Q] defy+ data network woes

i have a variation on the data network problems, not as annoying as reboots,
but getting close.
normally i am on GSM only, as my data needs are low and it extends
battery life. for hours, everything is dandy. then i notice that
the "G" icon and the signal bar are not blue anymore (stock theme)
but grey. 'settings' say i am still data "connected", but in fact
data connection is out (the operating system thinks there is
data connection, browsers and mail clients keep spinning and
trying until timeout).
turning on and off wifi makes the phone try to connect to the data
network again. sometimes this works, but more often that not, i have
to switch to 3G mode for this to work, and sometimes even that does
not help, and i have to go airplane mode to turn the radio on and off
completely. otherwise it just tries and tries and tries to reconnect,
draining the battery like crazy, and sometimes resulting in these
mysterious reboots others are experiencing as well.
is this the phone or a network problem? (tmobile in the netherlands)
i was on the same network, same SIM with an older LG android phone
and i dont recall having this problem, so i am a bit hesitant
to blame the network for every outage...
should i just send it back for repairs/replacement?
system version: 45.0.74.MB526.Retail.en.DE
baseband: EPU93_U_00.60.00

for a while i will keep the phone in 3G mode to see if the same
problem exists. as my mobile data needs are low, it would be
a shame if i cannot keep it in GSM mode because of this...

I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Sent from my MB525 using XDA Premium App

mikeman8484 said:
I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Click to expand...
Click to collapse
i am on custom saving mode. i think that the saving modes, where
the data connection is cut off after some inactivity, just flesh out
the problem more, as trying to connect back to the data network
happens more often then during normal use, when data connection
is kept alive all the time.
since i set the connection mode to 3G or better, i did not have the problem
but that was only a couple of hours ago. sometimes a day goes by
without manifesting itself...

I'm on 2G all the time. And the custom saving still got set up for cutting the data off but i don't seem to have that problem anymore i can check later on if it would still appear on max saving.
Sent from my MB525 using XDA Premium App

so after days, it seems like i cannot reproduce these problems
while on 3G. seems like 2G only for data is not 100% reliable
either because of the phone or the network itself, or both.
pitty.

i m having problems with network reception with the 7.2 CM rom on the defy+.tried the baseband switcher in this link but still little or no reception
http://forum.xda-developers.com/showthread.php?t=1203297

i have been on 3G last couple of days, and no data woes.
however i had a spontaneous reboot, so the reboot problem
is seemingly not only a 2G issue (if it is)..

[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.