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Greetings XDA members. I purchased my Galaxy S3 from AT&T back in July. Had no issues with data (HPSA+/4GLTE). Recently I rooted phone (no custom firmwares) for tethering purposes. Never tweaked with APN settings. Some reason my phone shows the 4G LTE symbol for connection but randomly when I go to access internet on any app I have no connection. I also dont receive any text messages (SMS or MMS). Only way around it is to send my phone into airplane mode then turn airplane mode off and I can surf fine and all my missed texts pop up all at once. I can be in exact same area and use data then randomly it stops functioning (repeat airplane mode procedure). I did research and some say it could be that sim card in the spring could have unaligned inside the phone. Tried that but to no avail. Anyone have any suggestions? Would downloading stock firmware/factory settings fix this issue? Below is details on my phone.
AT&T Samsung Galaxy S III (SGH-i747)
Android 4.0.4
Baseband I747UCLEM
Network APN: default AT&T PDA
I have unlimited data (used roughly 3.7gb) because I've tried the restorting to factory settings and google reinstalled all my apps couple times (forgot to use wifi instead of cell data). I figured maybe that was an issue that I used too much data and AT&T cuts me off. Im not sure if its the tethering app (only used once to test) did something to it. Phone worked fine for a couple weeks then randomly started cutting data out resulting in the airplane mode workaround.
Ok I've rambled enough. Final question: Is there a list that has AT&T Samsung Galaxy 3 SGH-i747 default APN settings so i can varify that mines weren't altered to cause this issue.
Thanks for reading and hopefully issue can be resolved. Thanks.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
I just wanted to echo your problem. I have an AT&T S3 I747 and don't recall there being any network issues until I rooted my phone. I have unrooted, gone back to stock, and then even went back to stock ICS from JB and the network issue still seems to be there. I was curious if you found any ideas or fixes, or if anyone else has a fix or solution. I am running rooted stock Jellybean.
Im using my GS3 unroot with jelly bean 4.1.1 and dont seem to have the issue anymore. I went completely stock and I called AT&T to reset my data. Told them the issue I had (didnt mention i previously rooted) and rep reset my APN settings for my phone. I had to turn phone off for a few minutes then turned back on and all seems to work now. It still goes out sometimes but not as often since going from ics to jelly bean. Hope this helps. Dont think ill be rooting again anytime soon. Think problem started after I tried that free tethering/hotspot app for rooted users. This is messed with APN settings and caused problems.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Root by itself won't cause any issues. You used another app, in this case the tethering, which used root and messed up normal data on your phone. You can safely root just be careful what you do after that. Read, read, read.
Hi All,
Long time follower, first time poster..
I have a very annoying issue with my Nexus 4(4.2.1 and rooted on Tmob).
I use wi-fi connection at home and work and in-between I switch to HSPA or should I say, I was able to..
Lately I have been seeing that If I leave the Wi-Fi area, the phone doesn't switch to cellular data and the connection gets lost.
Switching to airplane mode and back brings it back most of the time but it's really annoying having to do so..
I did find an issue #40514 on the google android code page( code.google.com/p/android/issues/detail?id=40514)
Tried the suggested work arounds like "Auto Network" setting and it didn't seem to help..also have tmob in the APN settings. Still the only thing that works for me is toggling the airplane mode.
This happened to me once on my previous Gnex but with N4, it started to happen all the time.
Does anyone have a better solution to this issue?
Thanks
Oz
even I face the same issue with this new Paranoid 4.1.2 ROM for Atrix 2. I've noticed only one ROM gave me consistent data 24/7, it was from same dev altered his NUMA B2.
But other than that, this has been a repeating problem in all ROMS. Data stays on for hours without issue but suddenly drops and never comes up, other than air plane toggle. Somebody mentioned it is with the network and trust me it is not..
but I'm also eagerly waiting for a solution
krisxda said:
even I face the same issue with this new Paranoid 4.1.2 ROM for Atrix 2. I've noticed only one ROM gave me consistent data 24/7, it was from same dev altered his NUMA B2.
But other than that, this has been a repeating problem in all ROMS. Data stays on for hours without issue but suddenly drops and never comes up, other than air plane toggle. Somebody mentioned it is with the network and trust me it is not..
but I'm also eagerly waiting for a solution
Click to expand...
Click to collapse
Yea, at first I thought it has something to do with rooting but apparently it is happening with non-rooted phones as well..Google needs to address this issue..
ozgurust said:
Yea, at first I thought it has something to do with rooting but apparently it is happening with non-rooted phones as well..Google needs to address this issue..
Click to expand...
Click to collapse
Are google aware of this wireless connectivity issue? I've posted and started another thread which details a 3G data issue... :/
LPX4 said:
Are google aware of this wireless connectivity issue? I've posted and started another thread which details a 3G data issue... :/
Click to expand...
Click to collapse
Just throwing in my two cents; I starred the threads that I *think* are related on the google tracker. My experience is like this:
I start up Sirius on my phone before leaving home (On wifi)
Driving to the end of my development and then lose WIFI which in turn turns my 3g/4g gray for about a half mile
Picks 3g/4g back up eventually
As I'm driving to work if I end up picking up any open WIFI spots that have a login, once that happens I lose 3g/4g again then have to either wait till that access point is out of range or just turn off my WIFI before data will pick up again
It's pretty annoying; probably going to have to create a tasker profile to turn off wifi when leaving the house and back on when I get home.
Same problem on an LG F6 Optimus
I just got a brand new LG Optimus F6 and I'm noticing this same issue. The phone is stock and runs 4.1.2
Anyone found a solution?
the issue continue in n4 with 4.4?
Both mine and my wife's 6p's are not able to access the internet while a call is in progress. My phone is unlocked & rooted, however my wife's is complete stock so I know that can't be the issue. I've also tried disabling the "enhanced" calling with LTE under cellular networks on both devices and this doesn't fix the issue, either. We're on Verizon, for what it's worth. Is anyone else experiencing this? If so what carrier are you on? Thanks!
EDIT: Fixed it for anyone else who comes across a similar issue: after going into my Verizon online and adding the Advanced calling 1.0 feature to my line, then rebooting my phone, and waiting a few minutes, things automagically started working.
ohlin5 said:
Both mine and my wife's 6p's are not able to access the internet while a call is in progress. My phone is unlocked & rooted, however my wife's is complete stock so I know that can't be the issue. I've also tried disabling the "enhanced" calling with LTE under cellular networks on both devices and this doesn't fix the issue, either. We're on Verizon, for what it's worth. Is anyone else experiencing this? If so what carrier are you on? Thanks!
EDIT: Fixed it for anyone else who comes across a similar issue: after going into my Verizon online and adding the Advanced calling 1.0 feature to my line, then rebooting my phone, and waiting a few minutes, things automagically started working.
Click to expand...
Click to collapse
Just bumping because I had the same issue and this fixed it.
Thanks
Hi, I'm having the same issue with a stock Nexus 6P on Verizon. However, I can't find Advanced Calling 1.0 anywhere. I found 'HD Voice' on Verizon and added it to my plan, and made sure the 'Enhanced 4G LTE Mode' is on and it still doesn't work. I've rebooted many times, no luck. Any ideas? I read somewhere that it may depend on what kind of tower you are on, does anyone have any more information about that or what I can do to make this work? I also still have unlimited data and I use my hotspot all the time, so this is a real problem. Thanks!
I am bumping this thread. I have unlimited data under the Verizon grandfathered plan. Does turning this feature on count as a change to my account and possibly mess with my unlimited data status?
Anyone else with a similar problem? I am also using an unlimited data plan under Verizon. I have the feature turned on and still have data dropout every time I am on a call. This has been present ever since the 6.0.1 update for me.....
Hello,
I've had this issue across more than 1 device and more than 1 carrier.
Here's what happens:
I enable WiFi, and for a while everything works as expected. I can send and receive MMS messages. I can disable WiFi and go back to my 4G connection.
The problem is, after an unknown amount of time, the phone drops the 4G connection in the background. I only know when I can't receive/send MMS messages anymore. At that point, if I disable WiFI there's no 4G data connection, and I have to turn Airplane mode off and turn it back on.
This is really annoying. It happened to me using Sprint and a Galaxy S4 (both stock and custom ROMs) and it's happening to me with a Galaxy S5 from MetroPCS. (I've used the stock Metro ROMs, Stock T-mobile ROMs, and Custom T-mobile ROMs).
Right now I'm using a Stock T-mobile ROM with the latest firmware, carrier is MetroPCS.
What can I do so this doesn't happen? It's really frustrating.
Thank you for your time.
Disabled "Smart Network Switch" in WiFi Settings?
*Detection* said:
Disabled "Smart Network Switch" in WiFi Settings?
Click to expand...
Click to collapse
Hello.
That's already disabled.
Should I enable it?
I tried with "smart network switch" enabled and disabled and problem still happened.
My S5 G900F Android 5.00 (Smart Network Switch disabled, Power Save disabled) on EE UK has had this problem for 9 months after phone upgraded itself to Lollipop (EE win the accolade to being the SLOWEST ON THE PLANET to provide Android updates.....). Since Jan 3, my wife's G901, a couple of weeks after it upgraded from 5.0 to 5.02, has developed the same problem. Neither phone has ever been rooted or other.
I have fruitlessly searched everywhere for a solution without success. EE Customer Services Tier 2 & Samsung's own service centre have failed to fix it. EE & Samsung blame each other for 5.1 or 5.1.1 not being available for download. Neither is prepared to resolve the issue despite hours on the phone. Have tried Safe Mode, Factory Reset, clearing everything, reloading APNs & Samsung even reloaded Android. All a waste of time: Many many days of it!
After approx half an hour connected to Wi-Fi, only way to get the mobile data to connect, is either reboot, enter & exit Air-plane mode or flip the 4G > 3G > 4G connection under More Networks. Have tested the fault in different cell areas countries and continents; fault is same everywhere.
It seems there are quite a few sufferers of this problem.
Samsung S5 keeps losing data connection
I have the same problem. My new Samsung phone loses the data connection (even though data is turned on) and I can only re-connect by restarting the phone. The first EE shop I took it to couldn't help at all. The second gave me a new SIM - that didn't work. Then I tried online support and after 3.5 hours of my life, in which I was passed on from one person to another, they completed a factory re-set - which didn't work (and additionally lost all the personalisation of my screen and some of my contacts). So I now have a not-very-smart phone which I have to re-start every time I want to use data. This is a business contract and the phone is less than two months old, but I'm not getting any effective support from EE. Android version is 5.0.2
me too, since last update. and app 'phono' shows "mobile data off" not got a time on it, but when i leave wifi coverage, it wont reconnect to cell data 2g/3g/4g. flightmode toggle to restore.
Abandon hope if you have this intermittent mobile data problem!
...at least until there is a software update, though I have no idea if that will help.
I have now tried a new sim card, a factory reset, and a replacement phone - which was provided only because I'm a business customer and I found a sympathetic member of staff. *By the way, I was told that if you are personal customer they won't consider replacing your phone if it is more than a month old - even if you started complaining about the phone as soon as you got it, the chances are a month will have elapsed by the time they put you through the hoops of a new sim, reset etc - and then it is too late to insist on a replacement phone.
In any case the replacement phone didn't resolve the issue so I have reached* a dead end. My phone fails to connect to data after having been connected to wifi - you have to do it manually each time you move away from a wifi connnection. At first I was doing it by restarting the phone, but am now following the advice of someone else who has the same problem and am going into flight mode and out again. *
This is not satisfactory, and it seems from reading forums that EE are to blame for the problem rather than Samsung, but I'm not 100% sure about that.*
Possible solution that works, for me, at the moment!
Having suffered this issue of my S5 (SM-G901F) not connecting to mobile data after being on Wi-Fi for a while unless switching airplane mode on/off for a few weeks; although it has probably been happening since the update I received late December; I have tried all of the turn this switch off, factory resets (x2), etc, etc, etc. and Googled the issue without success.
I have found this thread interesting, and I even tried calling EE support only to be told "you have tried everything that we would tell you to do" and "it wouldn't be a sim card, or handset issue, sounds like software". The reply was basically that like-it or lump it until the 5.1 update is released "by Samsung not EE because EE do not release Android updates". [Perhaps EE don't release the updates, but the stock rom is tested by them and their bloatware added before they eventually release it!!!]
Following my last reset I tried selectively re-installing the apps I used incase that was causing the issue. No Luck!
One last thing I tried was to look at every system 'thing' that I could find which used/switched any part of the mobile/mobile data/wifi - in addition to the settings I had already tried (all of which were mentioned in this thread previously). One thing I could not find not mentioned here, or anywhere, was the VoWi-Fi call on/off which I had always set to on as I do not live in a great reception area. Calling over Wi-Fi is great when you don't have a strong mobile signal.
Having 'played' with this setting for the last 24 hours I have found that the VoWi-Fi on/off appears to be a possible cure - for me anyway.:fingers-crossed:
When VoWi-Fi was set to off and leaving the phone connected to Wi-Fi overnight, the S5 immediately switched to mobile data this morning when I turned the Wi-Fi off . It continued to switch between Wi-Fi and mobile data all morning whilst out and about in and out of Wi-Fi connections - Woop Woop!!!
I then tried switching VoWi-Fi on (with Wi-Fi on and at home), leaving the phone for a number of hours, only to find that when I turned Wi-Fi off the phone refused to connect to mobile data even with a 'decent' mobile signal. The only way to get it to connect was to go back to switching Airplane mode on/off.
Switched VoWi-Fi off again, left Wi-Fi connected, left the phone for a couple of hours, etc. and hey-presto immediately switched to mobile data when I turned the Wi-Fi off. [Dances around the room because he's got the S5 automatically switching to mobile data again. Even though I'm at home with a great fibre internet and strong Wi-Fi connection!!!]
I do not know if this could be a solution for the others who are suffering from this issue, but it appears to be a solution for me at the moment. I thought I would share as your previous posts have helped me and you all seem to be pulling your hair out; like I have been; trying to find a solution.
Try it, it may work, but don't shoot me if it doesn't!
It's encouraging to know that I'm not crazy. I've had this issue across two devices and carries.
John,
Thank for your suggestion about WiFi calling. Unfortunately, I always have it off! I never used it, so maybe I should try turning it on? We'll see lol.
At this point, I think this is going to be my last Galaxy line phone.
Is it wi-fi calling that's causing the problem?
I have wondered if there is a link with wi-fi calling, but haven't tested it properly. I signed up with ee and bought the Galaxy phone specifically so that I could use wifi calling, as the town where I live (in the Scottish Borders) doesn't get a mobile signal strong to work reliably indoors from any of the networks. I'll try turning off wi-fi calling to see if that sorts the data thing (though I see that for one person above it did not). That would mean I wouldn't get calls or texts when I'm at home so it would not be a permanent solution for me. But in fact the wi-fi calling is not reliable anyway....
Brian_svc said:
It's encouraging to know that I'm not crazy. I've had this issue across two devices and carries.
John,
Thank for your suggestion about WiFi calling. Unfortunately, I always have it off! I never used it, so maybe I should try turning it on? We'll see lol.
At this point, I think this is going to be my last Galaxy line phone.
Click to expand...
Click to collapse
Brian,
You never know the way things are going with this issue; given that nobody seems to be able to pinpoint the fault; turning it on may just sort it!!!
still no change and its a pita.....
My provider is t-mobile germany. I have everything enabled on my account page, and wifi calling is working sometimes for a day or two. But after a while it just wont turn on. The same with volte at this point. I have to restart the phone to get this functionality up and running again.
Happens on both rooted custom roms, as well as stock rom. In both cases i took extra care to use the official stock rom from t-mobile germany dtm or the appropriate csc when using a custom rom.
Anyone else having similar problems? Is there maybe a way to reset the radio part of the s7 edge without having to restart the whole phone? Or maybe a more permanent solution? Turning on flight mode and turning off does not do the trick. A friend of mine has no such problems with his iphone 6. Same network, same wifi and same t-mobile account variant.
Thanks for reading!
just wondering why do you need wifi calling if you have unlimited talk/text?
Reception at work is bad, and i have to be available for my family and customers. During the times it is working i find this to be a very valuable feature. And besides, it should work all the time, but sadly doesn't in my case. Anyone else having similar problems?