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.
So I got my nexus 4 about a week ago, i havent flashed any roms or anything, everything is stock.
Im having this issue where every time i want to use the internet/facebookapp/anyinternetapp i have to toggle the data on and off for it to work again otherwise my data doesnt work.
What can i do to fix this? This is extremely frustrating
What are your APN settings?
Sent from my Nexus 4 using xda premium
Make sure your APN protocol only has the value "ipv6". Perhaps you see this mentioned in a recent post...
Sent from my Nexus 4 using Tapatalk 2
Uk here.. dial *#*#4636#*#* set phone network from wcdma prefered to LTE/GSM-PRL, turn radio off then back on .. now even though they are the wrong settings it's the only way i can can decent 3G(H) speeds and not have the minute or two 3G lockups... shrugs.
I have the same issue and I'm with Tmobile. I was on stock ROM and now im rooted on xylon ROM but still data wont connect sometimes . I made new apns too. I have to toggle data or power cycle to connect
Sent from my Nexus 4 using xda app-developers app
I have bought my Lg G2 last saturday. I'm still researching the phone and so far it's great except one thing. Problem is when the phone is removed from charging it refuses to establish a data connection. This happened to me twice and every time in the morning after the charging.
Solution is restarting the phone. If not, it just won't connect . When i go to the settings it is turn on, but there are no arrows at the top of the screen and it doesn't work. Otherwise , after the restart it works normally all day. I keep turning it on and of and it works fine.
I think it is a software problem, since I have a network signal, but I'm not sure.
Is anyone having a similar problem?
Thanks
Coxander said:
I have bought my Lg G2 last saturday. I'm still researching the phone and so far it's great except one thing. Problem is when the phone is removed from charging it refuses to establish a data connection. This happened to me twice and every time in the morning after the charging.
Solution is restarting the phone. If not, it just won't connect . When i go to the settings it is turn on, but there are no arrows at the top of the screen and it doesn't work. Otherwise , after the restart it works normally all day. I keep turning it on and of and it works fine.
I think it is a software problem, since I have a network signal, but I'm not sure.
Is anyone having a similar problem?
Thanks
Click to expand...
Click to collapse
Have you tried to Toggle Airplane Mode??
hd-renegade said:
Have you tried to Toggle Airplane Mode??
Click to expand...
Click to collapse
No, I have read about that today , but as a solution for a samsung g3 . I will try in the morning, because after the restart it works perfectly all day . Do you think it is a software problem?
Are you using different charger and cable or the originals that came with the phone?
Sent from my LG-D802 using xda premium
Same here. Toggle don't work but restart works OK.
-LG G2
gm007 said:
Are you using different charger and cable or the originals that came with the phone?
Sent from my LG-D802 using xda premium
Click to expand...
Click to collapse
I'm using original usb cable and charger, but with extender , because of the electricity. Phone is from England, and I'm from Serbia .
After the last night charging I had the same problem, but this time I used toggle between Airplane and Data . After that everything worked fine.
Coxander said:
I have bought my Lg G2 last saturday. I'm still researching the phone and so far it's great except one thing. Problem is when the phone is removed from charging it refuses to establish a data connection. This happened to me twice and every time in the morning after the charging.
Solution is restarting the phone. If not, it just won't connect . When i go to the settings it is turn on, but there are no arrows at the top of the screen and it doesn't work. Otherwise , after the restart it works normally all day. I keep turning it on and of and it works fine.
I think it is a software problem, since I have a network signal, but I'm not sure.
Is anyone having a similar problem?
Thanks
Click to expand...
Click to collapse
Hi, i noticed this too since a couple of days... Trying To figure out what the issue is ( in possession for 2 Weeks)
I can re-establish data connection without reboot by clicking in select automatically in network operators in data /mobile networks settings. So it will reregister on the network.
Guess we need to notify lg about this issue/bug for a fix.
my sprint g2, will drop data connection occasionally when switching from wifi to 3g or from lte to 3g. so i would say there is some kind of real issue here
Same problem after rooting
I'm having the same issue, the data connection drops, mostly after going into stand-by. The problem started to occur a few days later after rooting the LG G2. I have tried the temporary solutions above with succes, but there is no final solution to it. I wonder if the device intentionally starts to brick itself after rooting, I heard the LG G2 has a lot of root checkers (says the noob).
Anyone contacted LG yet? Or tried flashing their device?
I'm having a similar issue with my G2.
After switching off wifi, data won't start.
I have to click search network then it would go on.
Would it be something to do with the modem?
When i had my Samsung gs2, I had problems with random dropouts, then I found a way to flash new modem software and all worked fine with better reception and no dropouts.
I sometimes loose network connection completely (no service) when switching from 3g to 2g or vice versa, no issue with 4g what I've seen.
Though I have this BBS, looks very alarming I must say, does anyone have similar to this:https://db.tt/aKsiw0Xe
https://db.tt/9iMHIZvm
issue fixed
hi after a recent software update (mine was D80210c-HKG-XX, build number JDQ39B,...) the data connection issue is solved for me (also made a LG support case).
But my NFC funtcion stopped working now...
Same here. Ive got this issue after rooting the G2. It cannot connect to mobile data after Im away from wifi connection. Switch airplain mode on and off helps but its annoying even if u have more email account. Another problem after rooting was freezing and restarting phone after mouse connection. But next day was everything fine and its untill today. Have anyone similar issues with custom roms?
bercyy said:
Same here. Ive got this issue after rooting the G2. It cannot connect to mobile data after Im away from wifi connection. Switch airplain mode on and off helps but its annoying even if u have more email account. Another problem after rooting was freezing and restarting phone after mouse connection. But next day was everything fine and its untill today. Have anyone similar issues with custom roms?
Click to expand...
Click to collapse
I am rooted running Digital Dream on a Verizon VS980 with 12B radio installed. I loose data or go down to 1x all the time. I have to toggle airplane mode or reboot to re-establish 4G connection. Is there something else I can do. I love the phone but the data thing is annoying. Is the antenna really that bad in these phones?
kaluna00 said:
I am rooted running Digital Dream on a Verizon VS980 with 12B radio installed. I loose data or go down to 1x all the time. I have to toggle airplane mode or reboot to re-establish 4G connection. Is there something else I can do. I love the phone but the data thing is annoying. Is the antenna really that bad in these phones?
Click to expand...
Click to collapse
I think and Im almost 100% sure that this must be only software problem, because when the data is runnig, it runs fast and stable. No additional inconvenience.I hope next upgrade (update) will fixt it. However Im really surprising that u have same problem on custom ROM. Im using only airplain mode to switch the data on. I needent to restart device, but it is really really annoying.
Hi everyone, as I wrote before got data connection issue while getting away from wifi. The data cannot start automatic. I found out that it happens only if GSM/ WCDMA /LTE automatic connection is selected in the settings. When I adjust GSM/ WCDMA automatic connection - everything is ok. I was trying automatic switching and runs perfect. So if u dont use LTE, better say if the WCMDA is enought for u, it can be less annoying solution as manualy turn on/ off airplain mode. I hope next update fix this issue at all. Have nice day.
semalt
bercyy said:
I think and Im almost 100% sure that this must be only software problem, because when the data is runnig, it runs fast and stable. No additional inconvenience.I hope next upgrade (update) will fixt it. However Im really surprising that u have same problem on custom ROM. Im using only airplain mode to switch the data on. I needent to restart device, but it is really really annoying.
Click to expand...
Click to collapse
It seems better (still not perfect) I wiped everything including formatting the system partition and re-installed... But thanks for the replay!
Also, I don't have to reboot ... toggleing airplane mode takes care of it, i was just saying reboot is another alternative.
---------- Post added at 10:34 AM ---------- Previous post was at 10:25 AM ----------
bercyy said:
Hi everyone, as I wrote before got data connection issue while getting away from wifi. The data cannot start automatic. I found out that it happens only if GSM/ WCDMA /LTE automatic connection is selected in the settings. When I adjust GSM/ WCDMA automatic connection - everything is ok. I was trying automatic switching and runs perfect. So if u dont use LTE, better say if the WCMDA is enought for u, it can be less annoying solution as manualy turn on/ off airplain mode. I hope next update fix this issue at all. Have nice day.
Thanks for the tip.
Click to expand...
Click to collapse
This is definitely a software problem, but I have no idea how to fix it... when I first rooted everything was fine (I was on Malladus). Then I went to CM-based ROM and it was still working well.... then I updated my PRL (*228) and things started going south and I haven't been able to get it back working since.
I'm thinking of going back to Stock and starting over from scratch to see if I can fix the problem.... if anyone has an update on this issue I would greatly appreciate some advice!
potential fix for this issue?
Hi everyone. I had this phone for about 3 months. and the data connection thing has been annoying for me.. So the problem to start off with is at first I dont seem to get LTE at all during the first 2 days. I found online that the 3845#*802# or *#*#4636#*#* got me into adding LTE back into the system but problem is when I reboot. it goes back to WCDMA only or GSM WCDMA. and I lose LTE. But atleast I have LTE when I didnt reboot it. Then I found another problem which is losing data after I used LTE for a while. It won't reconnect until I reboot the phone or SOMETIMES it will return if I go into airplane mode and back. After some long research. I found this to be working for me.
So this is my story of how I got it to work for me
To start off with. This is what I am using
LG G2 D802
Android version 4.4.2
Baseband Version M8974A-AAAANAZM-1.0.190082
Kernel Version 3.4.0
Build KOT49I.D80220b
Software D80220b
My provider is Metropcs so if anyone has other issues with other providers. I don't know if this will help you.
First thing this phone needs is it has to be rooted - that part you do your own research and wont be hard since you are on XDA!!!
Then to get LTE working, you will need to type in 3845#*802# on your phone to get into the hidden menu
LTE-only ---> Modem Settings ---> RAT selection and select GSM / WCDMA / LTE Auto (will display SUCCESS) tap OK
This will give you LTE from the phone but it will not give you this option in your Mobile Networks / Network mode section (Preferred network mode) Atleast it didn't display it for me.
For my phone I had to edit the build.prop file for it to show it in the preferred network mode list.
In the build.prop file. You will have to look for this line and change the 9 to a 11. I've also saw some post about it being not a 9 and have to change to 12 for some networks. ALSO MAKE SURE YOU DO NOT CHANGE IT TO A NUMBER 0. It will crash the phone.
From
ro.telephony.default_network=9
To
ro.telephony.default_network=11
After this I got me LTE connection but issue with the lost of settings after reboot started. So next part helps with the reconnection after reboot. I got this from a post in XDA So give credit to the person that posted this. Sorry if I dont have it handy as I wrote this
- Root
- Install and activate Xposed fw
- Install and activate Intelli3G module
- In build.prop change ro.telephony.default_network=9 from 9 to 11
- Create a Tasker profile of type Event -> System -> Device Boot
- Associate the profile to a new Task of type Misc -> Send Intent
- Configure the task by setting in the "Action" field the value "action.intelli3g.CHANGE_NETWORK_TYPE" and in the first "Extra" field set the value "extra.intelli3g.NETWORK_TYPE:10"
Doing this got my reconnection after reboot fixed. and LAST is the problem of randomly losing data connect until I reboot the phone. and after a long test.. This is my result. The phone lost connection due to trying to connect to LTE with non existing band. I don't know too much about those but from my testing. This is how I made my phone worked and it has been working for the last 2 weeks without any issue.
Go back into the hidden menu with 3845#*802#
LTE-only --> Modem Settings --> LTE Band Selection
Here you will see a Band with a number.
MetroPCS supports band 2, 4, 5 and 12
Since this phone doesnt have 12. You only select 2, 4 and 5 then just push back until the hidden menu closes.
Other providers. I dont know what band that they use. but i am guessing if you only select the bands that company supports. You might not have that issue with losing data anymore.
Please press thanks if this works for you.
So I've been getting this message occasionally the last few days, and voice/calling does indeed get disabled. A simple restart gets me back up and running for a day or so.
I am rooted but I specifically only noticed this since replacing my mobile hotspot provisioning app with the modified version from the dev forum.
Anyone else ever get this? It's a system notification in my task bar. I'll grab a screenshot next time. Think it's something to worry about?
Sent from my VS980 4G using XDA Premium 4 mobile app
I got this when I went into the elevator arty work where there is no service. I freaked out as well but I just think it's a no service message
Sent from my VS980 4G using XDA Premium 4 mobile app
Network Settings
Try checking this if and see if it helps ...
Settings > Tethering & Networks > Mobile Networks > System Select > make sure you have the proper network selected
Having the same problem on
Hi,
i have LG G2 D800 AT&T
I have update it 5.0.1 lollipop stock from your form
its work perfect but now today suddenly i saw the indication Restricted access changed" Voice Service is blocked"
Help me!!!!
Please!!!
Hi every one,
As the title says I've been using an Unlocked i337 with Simple Mobile carrier for the better part of a year now with zero issues, and happy with my 4G data working fine for a very long time until today when I seen my phone was only showing Edge data with the "E" indicator. I have tried searching and troubleshooting it, and nothing comes up. I recently rooted but 4G data was working just fine even after root. I have checked APN settings and toggled off and on. I went into the test menu and GSM/LTE is selected. I don't have any option in the settings menu to turn 4G off or on. What seems to be the problem?
Also for the record I have called Simple Mobile customer service for help but they can barely understand me let alone help me but they did check my account to see if any thing got adjusted and they resent OTA signal to my phone and every thing checked out fine. They just kept telling me restart my phone about 10 times.
Model: i337
Android Version: 4.2.2
If I haven't included any other crucial details let me know. Thanks