Losing network signal while charging - Galaxy S II Q&A, Help & Troubleshooting

I use a lot of internet sharing (wireless). I noticed that when I start charging battery my phone is dropping signal network after a while. When I switch the screen back on, signal comes back. it's very annoying and it doesn't happen when phone is not charging. At first I thought its rom/kernel/modem related but problem remains with different combinationsb of above.
Any suggestions on how to fix this issue?

Do your RIL and Baseband match?
Sent from my GT-I9100 using xda premium

UltimateAnas said:
Do your RIL and Baseband match?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
I guess so. Usually I use modem provided with rom. It looks like phone was going to deep deep sleep that it even loses network service and it wakes up when screen turns on. But as I said it happenes only when charging and, I think, only when I use internet sharing.
edit:
just checked with getril app and it says unknown ril so cant really tell if they match. I've put a NEAT rom 3.5 just today and didn't have chance to check wheather it still there or not but i guess it will still be there.

Your RIL and modem can change. The modem is up to the rom maker, they decide which one to use wheras your RIL stays the same from what you had on stock rom, unless you changed it of course
Sent from my GT-I9100 using xda premium

First of all, sorry for asking the same question twice (http://forum.xda-developers.com/showthread.php?t=1489237), but this thread seems to describe my problem even better.
I am using the latest Cyanogenmod 10 nightly on my Galaxy i9100, and it appears as if I have a similar problem. When I start charging my battery, the signal usually drops after a while. This is quite annoying, because I use my phone as WLAN hotspot. Rebooting the phone (charger connected) does not solve the problem. Instead, I usually have to unplug the cable and after that the phone quickly picks up a signal again.. I also tried to switch the airplane mode on/off. But then I cannot switch the airplane mode off again, so something really seems to be hanging. In these situations, the baseband version shows 'unknown'.
I have just used the app GetRil to confirm that the Ril and baseband version are matching.
Has anybody solved this problem? Is this a hardware or software issue? Are there any things I could test or should I provide more information?
Thanks a lot in advance!

cahe228 said:
First of all, sorry for asking the same question twice (http://forum.xda-developers.com/showthread.php?t=1489237), but this thread seems to describe my problem even better.
I am using the latest Cyanogenmod 10 nightly on my Galaxy i9100, and it appears as if I have a similar problem. When I start charging my battery, the signal usually drops after a while. This is quite annoying, because I use my phone as WLAN hotspot. Rebooting the phone (charger connected) does not solve the problem. Instead, I usually have to unplug the cable and after that the phone quickly picks up a signal again.. I also tried to switch the airplane mode on/off. But then I cannot switch the airplane mode off again, so something really seems to be hanging. In these situations, the baseband version shows 'unknown'.
I have just used the app GetRil to confirm that the Ril and baseband version are matching.
Has anybody solved this problem? Is this a hardware or software issue? Are there any things I could test or should I provide more information?
Thanks a lot in advance!
Click to expand...
Click to collapse
Guys' though I've never experienced this issue with wi-fi hotspot, I do know why the wifi turns off when your phone is charging.
So to settings > wifi> press menu button> choose advanced
you'll see an option what says "keep wifi on during sleep" or something of sorts. The default is set to "never". You guys need to change it to "always".
Cheers

daxgirl said:
Guys' though I've never experienced this issue with wi-fi hotspot, I do know why the wifi turns off when your phone is charging.
So to settings > wifi> press menu button> choose advanced
you'll see an option what says "keep wifi on during sleep" or something of sorts. The default is set to "never". You guys need to change it to "always".
Cheers
Click to expand...
Click to collapse
Sorry for the confusion, but I think you got me wrong. It is not the WLAN connection that drops. It is the mobile network connection that drops, so I cannot make/receive calls or use the 3G connection anymore.

Update:
Didn't find solution, flashed back sammy stock rom with custom kernel and all problems vanished. Using stock rom since than and never had this problem again.

michal_alton said:
Update:
Didn't find solution, flashed back sammy stock rom with custom kernel and all problems vanished. Using stock rom since than and never had this problem again.
Click to expand...
Click to collapse
Just for the records: I could also solve this issue by flashing a stock rom again. This must be a problem of Cyanogenmod.

Cahe228
I have same problem of continuous network lost while charging. Have have figured it?? Any solutions?

cahe228 said:
First of all, sorry for asking the same question twice (http://forum.xda-developers.com/showthread.php?t=1489237), but this thread seems to describe my problem even better.
I am using the latest Cyanogenmod 10 nightly on my Galaxy i9100, and it appears as if I have a similar problem. When I start charging my battery, the signal usually drops after a while. This is quite annoying, because I use my phone as WLAN hotspot. Rebooting the phone (charger connected) does not solve the problem. Instead, I usually have to unplug the cable and after that the phone quickly picks up a signal again.. I also tried to switch the airplane mode on/off. But then I cannot switch the airplane mode off again, so something really seems to be hanging. In these situations, the baseband version shows 'unknown'.
I have just used the app GetRil to confirm that the Ril and baseband version are matching.
Has anybody solved this problem? Is this a hardware or software issue? Are there any things I could test or should I provide more information?
Thanks a lot in advance!
Click to expand...
Click to collapse
I had this problem too and all I had to do was turn off fast charging in the settings
I think it turns off or lowers the strength of the network so it could charge faster and that's why it does this
I don't know much about tech so it might only help with my phone ( which is the Samsung a12 ) but I also hope it helps you too
Good luck

Related

Cell data connection stalling - anyone else experiencing issues?

Hi!
Is anyone else experiencing problems with the mobile data connection on this phone? It frequently stops working. Being in an area with excellent HSPA+ coverage, this can't be a signal issue.
The phone will suddenly stop loading anything, while displaying "3G" and an active upload indicator in the notification area. No internet usage is possible in these situations.
The only remedy: Cycling "data network mode" off/on. The phone will then immediately pick up HSPA+ again, working as intended.
My previous phone (Nexus One), which I used pretty much identically and at the same places as my Galaxy S2, did not experience these stalling issues. Is this a general (firmware) problem, or should I possibly look into getting a replacement unit?
I also have this problem. My SGS2 is on O2 (UK), got the phone from P4U.
Exactly the same problem, connected through H+ with good signal, suddenly the phone will switch to 3G and I will lose my connection, this can last for minutes unless I toggle data on/off. I am on KE7, but had this problem with KE2 as well.
It sounds similar to a problem mentioned in other threads, but this is the exact problem that I am facing.
I am also considering replacing the phone (if it is a phone issue, and not a firmware issue)
Happens to me also. Very annoying
Sent from my GT-I9100 using Tapatalk
Same problem here, but i also have problem with communicating via phone. Every time it starts in home, usually morning. I cant recieve any phonecalls or sms, also i cannot call or send sms. Need to reboot, signal is -113dB and i cannot choose plane -mode, it doesnt go there. Also i cannot select operator manually. Reboot is needed every time. This scenario has been over 3-4 mornings and i have owned SGS2 about 1,5 weeks now.
I have disabled fast dormancy, and never again experienced the issue.
mdalacu said:
I have disabled fast dormancy, and never again experienced the issue.
Click to expand...
Click to collapse
I assume one has to be rooted to do that
mdalacu said:
I have disabled fast dormancy, and never again experienced the issue.
Click to expand...
Click to collapse
Mate, how exactly did u disable fast dormancy please? i am really dying to solve this data connection issue which is really driving make crazy right now.. please could u provide some info for this?
Thanks
empluska said:
I assume one has to be rooted to do that
Click to expand...
Click to collapse
Yes, I think he is referring to this procedure: http://forum.xda-developers.com/showthread.php?t=1086599
It's good to know I'm not the only one experiencing intermittent connection issues - as this appears to be a firmware problem, I will wait for Samsungs next few releases to solve the problem. If the bug won't go away I might get a replacement unit.
In any case, please report back - if someone got his phone replaced due to this issue, did it fix it? Any other possible solutions?
I've spoken about this issue, the 3g itself doesn't want to work.
I've tried uskr's fix and it seemed to have worked. Also root needed.
The fix involves editing /system/build.prop
adding to the bottom.
ro.ril.enable.dtm=1
ro.ril.gprsclass=12
ro.ril.enable.3g.prefix=1
ro.ril.hsdpa.category=28
ro.ril.hsupa.category=9
ro.ril.hsxpa=3
Happens to me, can't wait till it's fixed.
Same problem with my phone
Just to let u know guys i'm facing the same issue with this phone. My data connection disappears completely bringing up a circle sign. I also lose the ability to make or receive the call. I sometimes get calls going to voicemail with full reception, when this happens I can't browse either. I am debating whether to replace the handset as I have about 4 days left to get a replacement. I bought the handset from carphone warehouse. It is a sim-free unbounded handset running the latest KE7 firmware. Any help would be appreciated as i am absolutely in love with this handset. By the way could u tell me if anyone is experiencing jagged lines while scrolling in the browser.
That's something new.
Try factory reset.
iznee said:
Mate, how exactly did u disable fast dormancy please? i am really dying to solve this data connection issue which is really driving make crazy right now.. please could u provide some info for this?
Thanks
Click to expand...
Click to collapse
Someone mentioned loading up the phone hidden menu *#*#9900#*#* and clicking on Disable Fast Dormancy there, but not sure if that actually works or not.
in another thread i have solved this problem on my device by disabling fast dormancy. not only it solved 2g/3g issue..it also solved lost connection and battery drain.
PartyMango said:
Hi!
Is anyone else experiencing problems with the mobile data connection on this phone? It frequently stops working. Being in an area with excellent HSPA+ coverage, this can't be a signal issue.
The phone will suddenly stop loading anything, while displaying "3G" and an active upload indicator in the notification area. No internet usage is possible in these situations.
The only remedy: Cycling "data network mode" off/on. The phone will then immediately pick up HSPA+ again, working as intended.
Click to expand...
Click to collapse
can confirm this - same issue here
aussiebum said:
Someone mentioned loading up the phone hidden menu *#*#9900#*#* and clicking on Disable Fast Dormancy there, but not sure if that actually works or not.
Click to expand...
Click to collapse
ok, i set fast dormancy to off, lets see if anything benefits from it...
TML1504 said:
ok, i set fast dormancy to off, lets see if anything benefits from it...
Click to expand...
Click to collapse
I'll try that too... and tell tomorrow did it help
iznee said:
in another thread i have solved this problem on my device by disabling fast dormancy. not only it solved 2g/3g issue..it also solved lost connection and battery drain.
Click to expand...
Click to collapse
hello iznee,
so how did you disable fastdormancy ?
i tried the hidden menu *#*#9900#*#* but it didn't work.
or did you do uskr method posted about how to disable fast dormancy ?
what about the method of editing the system.prob ?
which one of them?
please clarify
and did that solved your problem about switching from 2g to 3g ?
regards
It's not really a 2g/3g problem, more 3g/HSDPA and up problem.
And there "could" be two fixes, one I mentioned above (editing build.prop) lets call it data fix.
And the other requires deleting or editing the actual fast dormancy file as explained here
http://forum.xda-developers.com/showthread.php?t=1086599
Both are actually uskr's fixes. I did the data fix, which worked, but to make sure, I also deleted dormancy file.
DaffyOnLSD said:
It's not really a 2g/3g problem, more 3g/HSDPA and up problem.
And there "could" be two fixes, one I mentioned above (editing build.prop) lets call it data fix.
And the other requires deleting or editing the actual fast dormancy file as explained here
http://forum.xda-developers.com/showthread.php?t=1086599
Both are actually uskr's fixes. I did the data fix, which worked, but to make sure, I also deleted dormancy file.
Click to expand...
Click to collapse
could you please point me to this file which needs to be deleted ?
i checked uskr thread and he crossed the part about deleting the file and only kept the part that involved editing that file.
sorry but just to make sure

phone automatically disabling network

hey guys,
having an issue with me phone!
it randomly turns off network connectivity.
eg, disables reception so i can't make calls,sms or use data.
i have tried rebooting phone
i have tried doing factory reset
but it still randomly does this at times.
also when i go into my network settings i get PROCESS.COM.ANDROID.PHONE IS NOT RESPONDING!
so i can't even turn on/fix/choose network!
*edit*
i can sometimes access my network settings without the error but i have now found out that EVERYTIME i reboot the phone my network is disabled on startup and i have to go to network settings, then get the error and force exit then reopen it again and it enables the network!
could anyone share some light?
thanks.
Ahh , old error..
which version are you running on currently...?
Join the Club.
I had 2 Razrs both had the dreaded self power down issue so a manual power on was the only way to turn it back on. One of the phones the 3rd actually just died on its own no batter power nothing. On all the phones I had this network issue, it would be at 4G then when it switches to 2G it actually turns the network off completely and then goes to 2G. It does this on many occasions and sometimes I'm wondering if I'm on a call and signal strength goes down I wonder if I will be cut off. Had all the phones have issues weeks apart and awaiting the return of the 3rd phone from the service center I can't offer much more than what I have experienced so far. What I have found on this phone is that the signal quality isn't great in fact the SG2 I"m using right now on average has a better signal than the Razr. I'm also wondering if the self power down is attributed to the loss of signal, where the phone continues to look for a signal and don't find one and then powers down?
Try to check your smart setting.
Sent from my DROID RAZR using xda premium
dey.santanu2011 said:
Ahh , old error..
which version are you running on currently...?
Click to expand...
Click to collapse
hi, using the latest version i think?
651.73.30.xt310.retail.en.eu
2.3.5
---
i have no smart options enabled.
---
PLEASE HELP SOMEONE!
starscream. said:
hi, using the latest version i think?
651.73.30.xt310.retail.en.eu
2.3.5
---
i have no smart options enabled.
---
PLEASE HELP SOMEONE!
Click to expand...
Click to collapse
XT 310???????????????????
I think its a typo
anyways, I had the problem.. but then I upgraded the baseband to 85P and it is okay now..
If the baseband is correct then, install the application CATLOG and start logging... in case the phone throws the error, catch the data and post it here..
dey.santanu2011 said:
XT 310???????????????????
I think its a typo
anyways, I had the problem.. but then I upgraded the baseband to 85P and it is okay now..
If the baseband is correct then, install the application CATLOG and start logging... in case the phone throws the error, catch the data and post it here..
Click to expand...
Click to collapse
Lol.. yes typo. 910.
Base band is u_03.1c.85p
Alright ill try logging it. Hope i do it right and it works.
Cos as soon as I boot phone there is no network connection and I have to go to network setting for error to come up so hope it catches the necessary info.
Will get back to you.
Thanks.

[Q] Some issues in Android 4.0.3 on Galaxy S II

I've recently upgraded my Samsung Galaxy S II to Android 4.0.3 (COA - Romania) using Samsung Kies.
I sometimes have an issue:
- when I click the WiFi icon on status bar to activate wireless connection it partially gets green and stays locked for about 1-2 minutes. This happens every 6 or 7 attempts to connect using wireless. What can I do? I've already made a "Factory reset".
Another issue is:
- when I start wireless connection or the data connection from my network operator the phone locks and shuts down.
I know spotted these two issues cumulate: when Wi-Fi gets unresponsive and my phone's screen goes off, I can't start my phone.
After I restart it my battery is 14 percents lower.
Is there any solution?
same issues
I have the same issuses as described above by pykko, and beside that i have to charge my battery once in every 10-12 hours because it gets empty real fast. I don't play or watch movies on it. And i don't keep the mobile data or wireless on, only when i use them.
I have to mention that i didn't experienced these issues before updating to 4.0.3 (COA-Romania).
Any help would be apreciated. Thanks.
Many people have this wifi toggle issue including me but I read many posts saying that DXLP9 has fixed this issue.
you probably should upgrade or find a custom rom with DXLP9 base or u might wanna try VK's rom its XWLP9 but according to the posts they say its fixed .
Sent from my GT-I9100 using xda premium
pykko said:
Another issue is:
- when I start wireless connection or the data connection from my network operator the phone locks and shuts down.
I know spotted these two issues cumulate: when Wi-Fi gets unresponsive and my phone's screen goes off, I can't start my phone.
After I restart it my battery is 14 percents lower.
Is there any solution?
Click to expand...
Click to collapse
Thats when ur phone sleeps and never wakes up, I also experinced this problem its refered to as SoD(Sleep of Death), it has been more common in XWLP9(kernel to sepcific)
My recommedation is for you to upgrade to a new rom DWLP9 or the other new ones which came after XWLP9
OR
or you can try a custom rom, I found VK's rom( http://forum.xda-developers.com/showthread.php?t=1559009 ) its based on XWLP9 but not the kernel and its the same as the stock but themed to ICS, so I find it nice athough I didnt try it yet .

samsung galaxy s3 wifi not auto connect to home network

Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
hotlurve said:
Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
Click to expand...
Click to collapse
Its a well reported problem for some a search may find an answer .
jje
JJEgan said:
Its a well reported problem for some a search may find an answer .
jje
Click to expand...
Click to collapse
Reboot the modem/router and try again. If that doesn`t help press your wifi connection in settings and reinsert the password and reboot.
JJEgan said:
Its a well reported problem for some a search may find an answer .
jje
Click to expand...
Click to collapse
Yes I've found plenty of things relating to wifi issues on the phone but none specifically to this one so if anyone could help I would be grateful.
I assume you've tried forgetting the network and re-entering the details.
Also try playing with the Wi-Fi sleep policy, in the past this has caused some problems with the stability of the connection. Settings, Wi-Fi, menu, advanced.
Also it might be on the router side. Try changing the channel on the router, and if it's dual band set it to 2.4ghz instead of 5.
Sent from my GT-I9300 using Tapatalk 2
Back up data. Factory reset.
Update firmware.
Change kernel.
That's three possible fixes.
jje
Sent from my GT-I9300 using xda premium
Im getting very similar issues with my s3 trying to connect to a dlink router, works fine with the netgear one though. Did you manage to fix?
nadimsoze said:
I assume you've tried forgetting the network and re-entering the details.
Also try playing with the Wi-Fi sleep policy, in the past this has caused some problems with the stability of the connection. Settings, Wi-Fi, menu, advanced.
Also it might be on the router side. Try changing the channel on the router, and if it's dual band set it to 2.4ghz instead of 5.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
I cannot seem to get the WIFI Sleep to work at all. Even when set to NEVER on when asleep I can see in the battery stats that WIFI has stayed on the entire time. Any idea why this is?
can you tell us the ROM and kernel you are using (if you are using custom)? I have never had any issues with stock kernel myself.
also, did you hide your wifi SSID? in the past, it might cause some issues...

			
				
I was having the same problem, try this.. Setting - wifi - advanced - keep wifi on during sleep - Always.
I haven't noticed more battery use,
Sent from my GT-I9300 using xda premium
hotlurve said:
Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
Click to expand...
Click to collapse
if you want another option besides backing up your data, doing a full wipe, and reloading your data, try a different kernel...easy fix that seems to fix these problems most of the time...the kernel is responsible for your wifi, gps, bluetooth, cpu, gpu, etc...so swapping it out should fix an issue like that

Need help with Wfi keeps turning if self off

Can someone please help me with my S3's Wifi?
I was using the phone during Viber/Skype calls, but my wifi keeps turning it self off every 5 minutes or so. I have no idea what setting I forgot to turn it on/off.
Currently these are the settings are set on my phone:
Keep wifi on during sleep >>> Always
*#001# >>>> Wifi Power Save mode (Off)
Is there anything else I missed???
PS: I also found out other people also having similar issue as mine - - http://forums.whirlpool.net.au/archive/1943352
What rom are you running? If you run something like xxalf 8, do a upgrade to xxlfb or xxLg8 version. It got a newer modem on board that should fox the issue. Also turn off in wifi settings the point, notification when free network available. Hope that helps you.
Chris_84 said:
What rom are you running? If you run something like xxalf 8, do a upgrade to xxlfb or xxLg8 version. It got a newer modem on board that should fox the issue. Also turn off in wifi settings the point, notification when free network available. Hope that helps you.
Click to expand...
Click to collapse
Stock Rom. By the way, what do you mean by turn off in wifi settings "the point"?? May I ask what point are you referring to?

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