[Q] Network dropping randomly - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

Hi there, this is my first post here.
I recently got a SGH-i747 phone, I believe it's AT&T from the US, I am in New Zealand and using it here with Spark NZ(Telecom), when I first boot the phone, I have full reception, the internet works fine, I can text, make calls, browse the web, but about 30 seconds to a minute later the connection drops to 0 and doesn't load anything.
When I do have signal, it looks as it should and has a 4G symbol.
Running stock 4.4.2, no custom recovery either. It was doing it with 4.3 too, so that's when I decided to update.
I'm at the point where I'll just list this thing for sale and buy a different phone, it's frustrating me a whole lot.
Thanks,
Sam
Edit: The home-screen image is when the internet works

DrowsySam said:
Hi there, this is my first post here.
I recently got a SGH-i747 phone, I believe it's AT&T from the US, I am in New Zealand and using it here with Spark NZ(Telecom), when I first boot the phone, I have full reception, the internet works fine, I can text, make calls, browse the web, but about 30 seconds to a minute later the connection drops to 0 and doesn't load anything.
When I do have signal, it looks as it should and has a 4G symbol.
Running stock 4.4.2, no custom recovery either. It was doing it with 4.3 too, so that's when I decided to update.
I'm at the point where I'll just list this thing for sale and buy a different phone, it's frustrating me a whole lot.
Thanks,
Sam
Edit: The home-screen image is when the internet works
Click to expand...
Click to collapse
I am in same boat. When I get signal, everything is fine. Every 15-20minutes or so, for about 30 seconds, it is absolutely no signal (black triangle). And from battery screen, it appears, exactly at same interval. Did you get ur problem resolved? IF so, how

It's a known but not so known issue. It has to do with the radio interface layer, and our device maintainer at CM is looking into it.
What works for me is switching to 3G for a while (a few hours and a few reboots or so) then switching back to LTE. The problem should be fixed until you wipe /system for a new ROM.
I have a thread on the Q&A board detailing my frustrations.

Related

tmobile windows update

ok....i had the 6.5 update that was accidently leaked out on my phone. things i experienced with it.
battery life was short
keyboard pops up when new txt is rcvd - very annoying
constant erros about data connection
backlight stays on for a long time when phone is not used
very bad lag
so...tmobile finally put the actual release out on their site about the update. i installed that yesterday. phone seems fine and not doing any of the above.
but i noticed that i am unable to get certain apps that i use to have on there to work. it would look like it is starting up but then it doesn't.
i really want to use these apps on my phone. does anyone know why i am unable to?
xda wifi connection app
wm longlife app
thanks in advance!
knote said:
ok....i had the 6.5 update that was accidently leaked out on my phone. things i experienced with it.
battery life was short
keyboard pops up when new txt is rcvd - very annoying
constant erros about data connection
backlight stays on for a long time when phone is not used
very bad lag
so...tmobile finally put the actual release out on their site about the update. i installed that yesterday. phone seems fine and not doing any of the above.
but i noticed that i am unable to get certain apps that i use to have on there to work. it would look like it is starting up but then it doesn't.
i really want to use these apps on my phone. does anyone know why i am unable to?
xda wifi connection app
wm longlife app
thanks in advance!
Click to expand...
Click to collapse
any help? ..........................
Last I saw the T-Mobile update was exactly the same as the leaked one... So the problems you are experiencing are odd???? I still have the leaked Rom and it works fine without the issues you describe. The Only time my battery life is shortened is when using the internet features and/or leave the screen on... for example I left wifi sharing on the other day... I was at 50% 2 hours later... so I turned it off, 10 hours later I was at 30% not too bad!
Labarum said:
Last I saw the T-Mobile update was exactly the same as the leaked one... So the problems you are experiencing are odd???? I still have the leaked Rom and it works fine without the issues you describe. The Only time my battery life is shortened is when using the internet features and/or leave the screen on... for example I left wifi sharing on the other day... I was at 50% 2 hours later... so I turned it off, 10 hours later I was at 30% not too bad!
Click to expand...
Click to collapse
Yes I believe it's been confirmed that the "leaked" T-mo upgrade ROM was bit-for-bit identical to the final (official) release, verified by matching checksums.
However, when the upgrade was first making the rounds here, there were numerous reports of odd issues that would pop up for people after the initial flashing of the ROM...and the solution was just to re-flash it again. Amazingly, doing a 2nd flash of the same ROM seemed to clear up quite a few of the oddball problems that people were seeing.
I'm afraid though I don't have any idea why those last 2 apps aren't working for you following the upgrade...?
Woah, warning about WMLongLife...
It F*CKED up my 3G connection bad. It wouldn't automatically switch to 3G when I was coming into a 3G area from a GPRS/EDGE area and it was almost impossible to get the original setting back. I'd stay far away from that app if I was you.
The other app, I'm not familiar with. Where is the original post of that?

Data "stalling"

I don't really know to describe this problem better. I'm running CM10 (lately AOKP's latest build) with default kernels. I've flashed all the radios and tried a bunch of them in solid LTE coverage, I seem to have the same problem every time, which is the data seems to "stall."
It will show full signal, and then if i click a link, it will sort of just sit there, not really doing anything. Eventually it may load, or i give up in patience. Any one have any ideas?
eallan said:
I don't really know to describe this problem better. I'm running CM10 (lately AOKP's latest build) with default kernels. I've flashed all the radios and tried a bunch of them in solid LTE coverage, I seem to have the same problem every time, which is the data seems to "stall."
It will show full signal, and then if i click a link, it will sort of just sit there, not really doing anything. Eventually it may load, or i give up in patience. Any one have any ideas?
Click to expand...
Click to collapse
I am using at&t stock rom and not yet rooted. Even I have the same problem. Tried to disable and enable data from the notification but did not help. But, when I turn on the wifi, and turn off the wifi again, it works fine. When wifi is turned on phone disables the data and try's to connect to wifi or shows the available networks, but I don't connect and I turn off the wifi, phone reconnects to the at&t data again and then it works fine. Not sure why.
kk0813 said:
I am using at&t stock rom and not yet rooted. Even I have the same problem. Tried to disable and enable data from the notification but did not help. But, when I turn on the wifi, and turn off the wifi again, it works fine. When wifi is turned on phone disables the data and try's to connect to wifi or shows the available networks, but I don't connect and I turn off the wifi, phone reconnects to the at&t data again and then it works fine. Not sure why.
Click to expand...
Click to collapse
I can't even run a speed test because it just sits there. Web pages "load" but wind up stalling. Sometimes they finish, sometimes they don't. I have no idea what's causing it. What modem are you on?
eallan said:
I can't even run a speed test because it just sits there. Web pages "load" but wind up stalling. Sometimes they finish, sometimes they don't. I have no idea what's causing it. What modem are you on?
Click to expand...
Click to collapse
May be a good time to contact your cell phone provider for a replacement.
I was on a cross country road trip running CM9 on my GS3 and I kept running into the same thing. A temporary fix was to reboot the phone. Since I got back, I flashed SlimBean and I haven't seen the issue again.
In my case, I think its the SIM card. I used Google Maps/Navagation on my HTC G2 (using a micro SIM adapter) and my phone got HOT, I mean burn your fingers hot (upwards of 57 degC to 60 degC).
If it happens again I'm going to bring my SIM card back to ATT and have them replace it. I did some googleing and it seems like this is common with the Verizon variants of the GS3.
fortesquieu said:
May be a good time to contact your cell phone provider for a replacement.
Click to expand...
Click to collapse
That's the next step... it means reflashing, and waiting for samsung to fix it though, which sucks a lot.
ive had this same problem and it would piss me off! i found out that busybox was the culprit. i uninstalled busybox and cleard my cache in recovery and all was well once again. if any of yall have busybox installed you may look into my solution.
I recently been having this issue also. But mine is a little bit different. Like my phone will say I am connected to "H" for data but when I load a Page it slightly lags switches to H+ and boom Internet works. When I stall for more then 5 minutes it switches back. I'm not sure if it's some battery conserving feature or what but I have no problem against at.
Transmitted from my GALAXYSIII running Jelly Bean. XDA premium

Toro Network Drops, 4.2.2 and 4.3

Hey guys - my VZW Gnex (it's a refurb to replace my old one with a bad screen) has been having excessive network dropouts lately. When I boot the phone, it doesn't acquire signal for over a minute, when I place a call I lose signal afterwards, and data drops out randomly. The device will say it's connected (blue bars), although I cannot use the internet. Also, it'll randomly loose cellular connectivity, although indicate that it has signal. I'll go to send a text and it'll immediately have send errors, and I am unable to make or receive calls, even though it shows I have signal. To fix, a reboot is always necessary. This has happened on 4.3 (crDroid) and 4.2.2 (CM 10.1.3 stable). It has happened across all the different radios, 4.0.4 and up, and across several different kernels. Does anyone have suggestions, the phone isn't really usable if people can't get in touch and I'm unaware that they can't.
EDIT: When I go into the phone info menu *#*#4636*#*# when the radio has no data, it says preferred network is "unknown." If I change it, the setting immediately goes back to unknown.
U might need to go through the insurance and get another one.
Sent from my Galaxy Nexus using XDA Premium 4 mobile app
eriscentro said:
Hey guys - my VZW Gnex (it's a refurb to replace my old one with a bad screen) has been having excessive network dropouts lately. When I boot the phone, it doesn't acquire signal for over a minute, when I place a call I lose signal afterwards, and data drops out randomly. The device will say it's connected (blue bars), although I cannot use the internet. Also, it'll randomly loose cellular connectivity, although indicate that it has signal. I'll go to send a text and it'll immediately have send errors, and I am unable to make or receive calls, even though it shows I have signal. To fix, a reboot is always necessary. This has happened on 4.3 (crDroid) and 4.2.2 (CM 10.1.3 stable). It has happened across all the different radios, 4.0.4 and up, and across several different kernels. Does anyone have suggestions, the phone isn't really usable if people can't get in touch and I'm unaware that they can't.
EDIT: When I go into the phone info menu *#*#4636*#*# when the radio has no data, it says preferred network is "unknown." If I change it, the setting immediately goes back to unknown.
Click to expand...
Click to collapse
This is a known issue with 4.3 ROMs. I'm not sure about 4.2.2. It looks like CM 10.2 may have a fix for it in the next nightly. One known fix is to edit build.prop to include
ro.telepohny.default_cdma_sub=0
Thank has worked for me.
dlabadie said:
This is a known issue with 4.3 ROMs. I'm not sure about 4.2.2. It looks like CM 10.2 may have a fix for it in the next nightly. One known fix is to edit build.prop to include
ro.telepohny.default_cdma_sub=0
Thank has worked for me.
Click to expand...
Click to collapse
I've added that line, doesn't help

[Q] update modem/firmware/kernel to fix data issues?

Since I started working full time in my new career I haven't had time to keep up with the changes. Can I get someone in the know to help me out with this?
I remember reading that KitKat was known to have data issues. I have the following:
T-Mobile model SM-N900T
4.4.2
N900TUVUCNB4
custom kernel: 3.4.84-leanKrnerl-hlte-2.2 (don't remember name, got it here)
stock rom modified
Problem is every once in a while I lose data connection even though it shows a 4G icon and several bars of service. I even had T-Mobile send me the signal booster, which is installed at my home and seems to be working, but same issue continues to happen. And if I turn on WiFi at that point, WiFi connects, but 4G icon doesn't go away, and I stay without data access even though I'm supposedly connected to WiFi.
As you can imagine, this is annoying. It happens at least once a day, sometimes multiple times. Then it goes back to normal.
I don't have the time to update fully to a new rom with new firmware and have to reinstall everything. Is there new modem/radio/firmware/kernel I can install over my existing installation and expect to see this issue go away? Or am I stuck with this until I change phones?
Thanks for your patience and helping me out with this.
Unfortunately its a common issue and there is no fix for it.
quick fix it to out your phone in airplane mode then out of it
Thanks, although that sucks to hear. Of all my Samsung devices (see sig + smart tv, blu-ray, sound bar, tablets) the Note III has by far been the buggiest. Both my wife and I have had buggy experiences and I'm rooted and she's fully stock. Not nearly as happy with this Note III as I was with the Note II, that's for sure.
Once again, thanks for taking the time to answer.
network issues
Max_Pain said:
Thanks, although that sucks to hear. Of all my Samsung devices (see sig + smart tv, blu-ray, sound bar, tablets) the Note III has by far been the buggiest. Both my wife and I have had buggy experiences and I'm rooted and she's fully stock. Not nearly as happy with this Note III as I was with the Note II, that's for sure.
Once again, thanks for taking the time to answer.
Click to expand...
Click to collapse
I too had network issues. My 4G would slow to a crawl or would become non responsive. It would take a reboot or airplane mode toggle to make 4G work for about an hour before it goes bad again.
I updated to the latest NF4 firmware and it has been running for the past 48 hours with no issues.
Speed is not much of an improvement. I get around 30mbps /22mbps in NYC. But data stability has increased to a great extent. I do get the occasional hiccups with data , but it resolves itself in about 10-15 seconds.
Hope this helps you
Rooted Note 3 with stock NF4 firmware / debloated
Updated to nf4 before bed last night so it's only been half a day but will post result later tonight when I get home where I usually experience this data issue to see if the new firmware makes a difference.
Update: so far so good. I've been home for several hours now and haven't gotten any data issues.
OK spoke to soon. 10 minutes after I posted my data stopped working. Had to toggle airplane mode.

[Q] Signal indicator issue on unlocked and rooted AT&T S3

I have a very weird problem on my S3 and I have looked everywhere and I can't figure out what's wrong.
I have a stock unrooted S3 on 4.4.2. Recently I took the phone overseas and had it unlocked, I don't know quite how the person unlocked it, but when I got it back it was having a lot of problems. All my Data was wiped, but still unrooted but showing many errors. I was having an error every time I opened my contacts saying android.process.acore has stopped. I was also having trouble getting signal with a local sim card, at the time I thought it was some setting I didn't know about or that it was the network that was messed up. Then when I got home I continued to have with my at&t network, always showing no signal and no data, when I did have signal it would cut out in a few min and when I got Data it was only 2g.
So what I did was install a stock rooted rom that I had been using before, this rom took care of a lot of the errors but wifi doesn't work on it, so I had to install a kernel which was verson 3.4.0-g2d4cae8 ktoonsez, this took care of the wifi problem.
Then I looked around a lot for reasons that my network wasn't working. One potential problem was APN, I checked that and mine was correct. There was also a problem listed with IMEI and that was fine on my phone too. Then I finally found that sometimes you can reinstal NV items and that can fix your network issues. So I found a site that had NV items to fix LTE and flashed that on my phone through odin. That actually took care of my network issue! I can get network now and get LTE, luckily saving my phone from being completely useless.
Now I have a completely diff issue and I don't know if I'm missing something similar to that to fix it.
What happens is that I constantly only have 1 signal bar, then when I start making a call or send a text I all of a sudden have 4 or 5 bars. So I have signal, but somehow its not registering properly. I would be okay with this considering my phone is at least letting me make calls even though it takes a bit longer to connect, but the problem is that it's been heating up a lot and the battery has been dying 3 times a day when it used to last an entire day. Looking up this problem I found that this problem is common when you have no signal. Also when I think when I am closer to a tower then my phone has 3 bars most of the time and the battery lasts longer, aka when I was in downtown Houston I only had to charge my phone once during the day as opposed to 2 times.
Anyone have any Idea how I might be able to fix this problem. My mom had her phone unlocked the same way but she is still on official stock rom with root, and is having the same problem, so I'm pretty sure it was the unlocking process and something similar to the NV items. Maybe I needed to install a whole NV items file instead of just the LTE segment? Sorry this was so long, and maybe rambling. Let me know if you guys need any more information.

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