Develop Bugs

WiFi connection kills mobile network

I'm having an issue that happens about 50% of the time. When in a WiFi zone and connected to a router, quite often the mobile network will lose connection so I cannot make calls or send texts. None of the mobile bars are illuminated and there appears to be a little "x" above them. Leaving the WiFi zone disconnects from the router, but the mobile network still does not come back.
I have to reboot the phone before it picks up the mobile network again. It's really frustrating because without checking my phone, I never know whether it has mobile network connection or not (when i'm in a WiFi area such as work). I know the area i'm in has mobile connection, but WiFi just seems to kill it.
This is happening on the stock HTC ROM and the latest Oxygen ROM that I flashed to. Is this a known big or any tips/tricks?

Go to Settings > Wireless & Networks > press Menu, select Advanced, and check your Wi-Fi Sleep policy settings.

maybe you have an old radio? i would suggest that you try to flash another radio to see if it solves your problem. again, just a suggestion!!!

MasDroid said:
Go to Settings > Wireless & Networks > press Menu, select Advanced, and check your Wi-Fi Sleep policy settings.
Click to expand...
Click to collapse
Hmmm, I did not know about that. I'm not sure it'll fix the issue, but the WiFi turning off an on did somewhat bug me, so cheers for showing me that setting anyway
mariosraptor said:
maybe you have an old radio? i would suggest that you try to flash another radio to see if it solves your problem. again, just a suggestion!!!
Click to expand...
Click to collapse
Well, I don't know what my stock radio was, but when I flashed to Oxygen I tried the one the dev recommended. Perhaps i'll try another.
Would 3 Mobile be really annoyed if I took the phone in for help and it was flashed to a custom ROM?

alex98uk said:
Hmmm, I did not know about that. I'm not sure it'll fix the issue, but the WiFi turning off an on did somewhat bug me, so cheers for showing me that setting anyway
Well, I don't know what my stock radio was, but when I flashed to Oxygen I tried the one the dev recommended. Perhaps i'll try another.
Would 3 Mobile be really annoyed if I took the phone in for help and it was flashed to a custom ROM?
Click to expand...
Click to collapse
You could also try a modified kernel and as suggested above, a different radio version as this can help with issues related to Wi-Fi reception, GPS signal strength, and battery life.
If you purchased the mobile from 3 Mobile, then they may suggest that your warranty is void as you have 'hacked' it. You can always flash back to stock ROM and then check if the same issue persists. If not, then go back to a custom ROM, try different radio versions and some may work better as it can depend on your network/area, and if still not resolved, try flashing a compatible modified Kernel from the Desire Android Development section of the forum.

I'm using Leedroid 2.3b with RIL optimised for 5.11.05.27, and I notice weak signal with WiFi, it is present, but WiFi bars change all the time, among other symptoms similar to those he has described. The other day I went out of range of WiFi network, but the phone hasn't switched to mobile network, but instead the WiFi icon remained and there of course was no connection. Would you define this as an ROM or radio issue? Is there any sense in changing the radio to other when the ROM developer stated this one is the best?
A few days ago I flashed the newest radio (I was using batt+ up to that moment) because I experienced echo during calls. Now the echo is gone, but this happens.
Sent from my HTC Desire using Tapatalk

erklat said:
I'm using Leedroid 2.3b with RIL optimised for 5.11.05.27, and I notice weak signal with WiFi, it is present, but WiFi bars change all the time, among other symptoms similar to those he has described. The other day I went out of range of WiFi network, but the phone hasn't switched to mobile network, but instead the WiFi icon remained and there of course was no connection. Would you define this as an ROM or radio issue? Is there any sense in changing the radio to other when the ROM developer stated this one is the best?
A few days ago I flashed the newest radio (I was using batt+ up to that moment) because I experienced echo during calls. Now the echo is gone, but this happens.
Sent from my HTC Desire using Tapatalk
Click to expand...
Click to collapse
I think it could be ROM or Radio related... I was not aware that the associated RIL was to be flashed also although I know it is always recommened as it can provide an important part in handling the communication between the Radio and the Kernel.
Have you tried without the RIL and just the radio alone? Try that and see if it improves the situation.

I downloaded and flashed RIL for this radio. It shouldn't make any difference though since this RIL is supposed to be in the ROM already. :s
This radio is also downloaded OTA from our provider. I checked my sister's Desire, she has the same radio on her stock Desire (i.e. it was downloaded OTA).
Sent from my HTC Desire using Tapatalk

Is there any good advice on what Radios work well and what they excel at? I see quite a lot posted, but no hard information on what works best
What I would love is one that actually picks up mobile signal. Where I live, we get very poor reception, however, usually 1 bar is possible. My Desire never picks up anything whereas my old N95 8gb used to get 1 bar as does my brothers phone.
It's good enough for texts at least. Any advice on radios then?

ATT GS3 losing Data Network randomly

This is the Task650 and Ktoonsez AOKP. VERSION: d2att(4.1.2 JZ054K) from December 2nd release.
My data network goes in and out at random. It actually started happening about 4 days ago on an older build by Task650 & Ktoonsez but I saw the new one so wiped dalvik and Partition cache and rom'ed. Even after flashing the new ROM, data is acting the same way. It is completely random, happens when the phone is in use or when it is locked. I can tell when data connects for short spurts because I hear the notices for new emails. All in all today, I've maybe had 5 minutes of HSPA/3G data and the rest all I have is cellular network for calls. reception strong, and I am in areas where I always have good connection and speed.
Any ideas? Kind of frustrating if I am out to lunch and want to catch up on things (stuff is blocked at work). Also I am paying for data I can't use :/

fully wipe and reflash.. try a different modem

XTwarrior said:
This is the Task650 and Ktoonsez AOKP. VERSION: d2att(4.1.2 JZ054K) from December 2nd release.
My data network goes in and out at random. It actually started happening about 4 days ago on an older build by Task650 & Ktoonsez but I saw the new one so wiped dalvik and Partition cache and rom'ed. Even after flashing the new ROM, data is acting the same way. It is completely random, happens when the phone is in use or when it is locked. I can tell when data connects for short spurts because I hear the notices for new emails. All in all today, I've maybe had 5 minutes of HSPA/3G data and the rest all I have is cellular network for calls. reception strong, and I am in areas where I always have good connection and speed.
Any ideas? Kind of frustrating if I am out to lunch and want to catch up on things (stuff is blocked at work). Also I am paying for data I can't use :/
Click to expand...
Click to collapse
Mine changes between HSPA/3G while on a call. After call ends it goes back to 4G
Sent from my SGH-I747 using xda app-developers app

wujiku said:
fully wipe and reflash.. try a different modem
Click to expand...
Click to collapse
I am admittedly new to flashing, I just assumed everything was in the package. I flash the ROM and Gapps, is there a source for different modems?
This is definite disconnect of data DHTP. Can't get anywhere, and there is no symbol where there usually is on the reception bar. When it comes back for brief moments, it has either HSPA, 3g, etc.... on the bar.

are you able to send and receive calls? text?
I flashed that rom three days ago, and i had to replace it via warranty. it showed it had signal, but couldnt make any calls or text at all. then i Odin back to stock never worked again.

Don't think it has to do with any rom. Noticed that my wife's sgs3 has had a problem sending and receiving texts and the network drops a lot as well. She is completely stock with the jelly Bean update. My network has been a little suspect over the last few days also. Might just be the service.
Sent from my SAMSUNG-SGH-I747 using xda premium

Im having same issue...not new to flashing ..probably modm issue. working on it.
XTwarrior said:
This is the Task650 and Ktoonsez AOKP. VERSION: d2att(4.1.2 JZ054K) from December 2nd release.
My data network goes in and out at random. It actually started happening about 4 days ago on an older build by Task650 & Ktoonsez but I saw the new one so wiped dalvik and Partition cache and rom'ed. Even after flashing the new ROM, data is acting the same way. It is completely random, happens when the phone is in use or when it is locked. I can tell when data connects for short spurts because I hear the notices for new emails. All in all today, I've maybe had 5 minutes of HSPA/3G data and the rest all I have is cellular network for calls. reception strong, and I am in areas where I always have good connection and speed.
Any ideas? Kind of frustrating if I am out to lunch and want to catch up on things (stuff is blocked at work). Also I am paying for data I can't use :/
Click to expand...
Click to collapse

Hey Guys, I may have found the culprit...sort of.
The wife has an iP5 and she said to me while we are driving to a holiday party 'I finally have official 4G LTE on my phone'. To which I of course ask what she means. Apparently the same day I started not being able to connect to data networks, is actually the day that ATT fired up their 4G LTE tower(s) in the Lehigh Valley area. When I do get data on occasion, it's when I bump down to 3G and HSPA. Unfortunately, the ROM has a bug where I cannot force it to look for just 3G, I go to save the setting and it immediately jumps back to LTE.
I may just have to flash to a version that definitely supports 4G LTE data. This issue occurred before I flashed to newest ROM, so it has something to do with the core build or modem that both versions use.
Ngriffin, if you find any successful modems please let me know. I like the ROM but I can't go without a data connection much longer.

So, for those who care, I flashed Gapps and also Flashed a new modem (http://forum.xda-developers.com/showthread.php?t=1831898) version UCLG1 and it's a no go. A few in my area said it worked great for them so now I am a bit discouraged. Northeast Pennsilvania Area.
Modem coverage map (submitted by XDA users) https://maps.google.com/maps/ms?msi...ll=40.898982,-75.992002&spn=0.052809,0.111494
Versions tried:
LG1 -------------Did not work
LEM
LH9
LK3 -------------Works but only 3G data.
LH1
CLI5
More info, tested using the Wife's Ip5 and realized we don;t have LTE at our house, so I'll have to wait until we get withing range of the LTE tower(s) to see if it has an issue. However, I now have data reliably.

DHTP said:
Mine changes between HSPA/3G while on a call. After call ends it goes back to 4G
Sent from my SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
That's normal. LTE is data only and isn't used for phone calls.

I've been running Task's AOKP on my SGS II and III for a while with no data issues. Check your APN settings. If you're in an LTE area, you should be able to sit on the ATT LTE APN and have no problems, even away from LTE coverage.
Sent from my SGH-I747 using xda app-developers app

To update further, LK3 modem worked for a short while, but once I left the area of my immediate cell tower and it had to connect to another tower, it couldn't. I flashed ALL modems in my list a post above and NONE work. I'm kind of pissed right now.
Any ideas? I'll probably to a full backup and then flash a completely different ROM and cross my fingers. Is there an official JB stock ROM sans the bloatware that is stable and can connect to LTE (or any data network reliably for that matter)?

It was my APN *facepalm* Thanks for the suggestion. It was sitting on wap.cingular instead of the LTE and it was causing the issue. I'm on modem CLH1 and it is working, I have the 4G (3G) symbol now and data is connecting. Well, I learned something thanks! :victory:

XTwarrior said:
It was my APN *facepalm* Thanks for the suggestion. It was sitting on wap.cingular instead of the LTE and it was causing the issue. I'm on modem CLH1 and it is working, I have the 4G (3G) symbol now and data is connecting. Well, I learned something thanks! :victory:
Click to expand...
Click to collapse
Glad I could be of help.
Sent from my SGH-I747 using xda app-developers app

XTwarrior said:
This is the Task650 and Ktoonsez AOKP. VERSION: d2att(4.1.2 JZ054K) from December 2nd release.
My data network goes in and out at random. It actually started happening about 4 days ago on an older build by Task650 & Ktoonsez but I saw the new one so wiped dalvik and Partition cache and rom'ed. Even after flashing the new ROM, data is acting the same way. It is completely random, happens when the phone is in use or when it is locked. I can tell when data connects for short spurts because I hear the notices for new emails. All in all today, I've maybe had 5 minutes of HSPA/3G data and the rest all I have is cellular network for calls. reception strong, and I am in areas where I always have good connection and speed.
Any ideas? Kind of frustrating if I am out to lunch and want to catch up on things (stuff is blocked at work). Also I am paying for data I can't use :/
Click to expand...
Click to collapse
I started having issues with mine about the same time. I haven't been able to figure it out yet. I had just gone to JB and flashed a new ROM. Then started noticing not just data being very spotty but also my calls (both incoming and outgoing) were very spotty too. Both seemed to only work about 50% of the time. I have since completely wiped and factory reset twice. I even Odin'ed back to a stock Rout66 jelly bean system but I still have issues
I have updated my APN to ATT PTA but that hasn't helped. What APN settings did you go with? Is ther some specific for LTE coverage? On the stock system now I can actually see the LTE icon when it actually chooses to connect.
Also, where did you find other modems. I was told in another forum not to flash any that weren't specific to Jelly Bean and all I have found is the stock I747UCDLK3 which is already on my phone. I did try flashing that seperately just to see if that would help but did not.
I need to get my phone working pronto as it is my main phone for both business and personal phone calls. Any help would be greatly appreciated. Thanks in advance.

jroyjohnson said:
I have updated my APN to ATT PTA but that hasn't helped. What APN settings did you go with? Is ther some specific for LTE coverage? On the stock system now I can actually see the LTE icon when it actually chooses to connect.
Click to expand...
Click to collapse
I thought they changed the APN to "ATT PHONE"? Trying to find those details now.
EDIT:
AT&T Changing Default APN's... no more pta???

kinjo1023 said:
Don't think it has to do with any rom. Noticed that my wife's sgs3 has had a problem sending and receiving texts and the network drops a lot as well. She is completely stock with the jelly Bean update. My network has been a little suspect over the last few days also. Might just be the service.
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
Im on stock rooted rom and have the same problem. Have to reboot to get data back and its slow a hell for a while after.
Frustrating and still can't find a solution.
Sent from my SGH-I747M using xda premium

Grnfinger said:
Im on stock rooted rom and have the same problem. Have to reboot to get data back and its slow a hell for a while after.
Frustrating and still can't find a solution.
Sent from my SGH-I747M using xda premium
Click to expand...
Click to collapse
When you're on stock, only thing you can do is check with your carrier and they'll either tell you that it's something on their end being worked on or that your SIM card is faulty.

This happens to me on tasks AOKP ROM at least once per day, but it usually only happens when I turn on LTE. Basically what happens is the phone has cellular service but no data, after a few minutes it comes back. What I have noticed is that its to do with LTE so maybe there's a problem with that?
Sent from my SGH-I747 using xda app-developers app

pjcordi said:
This happens to me on tasks AOKP ROM at least once per day, but it usually only happens when I turn on LTE. Basically what happens is the phone has cellular service but no data, after a few minutes it comes back. What I have noticed is that its to do with LTE so maybe there's a problem with that?
Sent from my SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Task's AOKP doesn't set the default APN to LTE for Rogers so you might wanna make sure it's your default APN.

[Q] Stock ROM - Mobile network disconnects - reboot fixes

I have a stock GN, rooted, but still running stock ROM. Anyways, a couple weeks ago, I started noticing issues with the cell connection. The cell signal triangle would lose all bars and turn into just a blue outline of the triangle (i.e. not gray in the middle). Mobile data wouldn't work, and toggling airplane mode wouldn't bring it back. Rebooting the phone seemed to fix the problem, but it just happens again every couple days.
Is there anything I can do to fix this?

talz13 said:
I have a stock GN, rooted, but still running stock ROM. Anyways, a couple weeks ago, I started noticing issues with the cell connection. The cell signal triangle would lose all bars and turn into just a blue outline of the triangle (i.e. not gray in the middle). Mobile data wouldn't work, and toggling airplane mode wouldn't bring it back. Rebooting the phone seemed to fix the problem, but it just happens again every couple days.
Is there anything I can do to fix this?
Click to expand...
Click to collapse
Have you tried searching on here for another radio?
Find one compatible for your particular device, download and extract to where adb is.
Then boot into fastboot mode (with unlocked bootloader) and type fastboot flash radio (name of radio file).img
fastboot reboot
Should improve reception hopefully.

passion8059 said:
Have you tried searching on here for another radio?
Find one compatible for your particular device, download and extract to where adb is.
Then boot into fastboot mode (with unlocked bootloader) and type fastboot flash radio (name of radio file).img
fastboot reboot
Should improve reception hopefully.
Click to expand...
Click to collapse
I don't think it's a reception issue, as I usually have 3 - 5 bars at home when this happens (not that it's limited to happening at home). I'd rather not install a different radio, as it's using the stock radio and I don't want to add more complexity to the issue.
I'll try and get a screenshot of the status screen next time this happens.

Radio is updated. Even with the latest build of android, you may not have the latest radio.
Upgrading the radio should definitely help if you're willing to take a chance.
I had similar issue with both stock and custom ROM. Upgrading my radio has helped and I never get a disconnection problem.
Hope that helps
faxed from my nexus

Update bootloader to the latest version as well. Use "GetRil" app to check that your RIL and radio firmware version match.
Sent from my Nexus

Mobile Network State Disconnected
OK...I’ve been having this problem for a few months now. I can make calls, text, access voice mail...I just can’t connect to the internet without being connected to a WIFI network. I can’t send email or receive email or use an app that requires internet access.
I’ve tried...
*rebooting
*switching WIFI on and off (it is set to automatically connect to a WIFI)
*removing and reinserting the battery
*drained the battery completely and then charged it completely
*going into airplane mode and back out
*updating profile and PRL
It is data enabled and set to connect to data services when roaming.
I have no SD card.
CDMA is set to automatic (there’s only 2 choices: Home only and Automatic)
Preferred network mode is LTE/CDMA. (Again, 2 choices: LTE/CDMA and CDMA) I’m at home now...turned off WIFI on phone and changed network mode to CDMA. Opened Chrome and it opened the page. I went back to LTE/CDMA and it opened the same page. I’ll have to try that when I'm running errands or something and not logged on to a WIFI.
I finally took it to a Sprint store here on Friday, May 9th. Spent about 10-15 minutes with the person. It was fixed and working when I left the store.
Guess what? It’s disconnected. Again.
I’ve had this phone for a little over a year. So far, I’ve replaced the charging cable (twice, not including the ones I broke) and battery. I can’t change phones until next year without shelling out a few hundred bucks--which I don’t have.
Any help and/or suggestions (even sympathy at this point) would be helpful. I’m extremely frustrated!

[Q] Problem getting mobile data connectivity on Arc S runnig CM10

I can't access mobile data.. 2G or 3G on my phone since yesterday. Earlier, there used to be occasional signal drops, but toggling mobile data, airplane mode, or rebooting would resume the connection. My APN and account balance etc are OK. Now, voice call and wifi work ok, but elsewise, the signal bars stay greyed out, and 3G, G, H or E indicators never show - it's as if it isn't even attempting to connect to data. :crying: I also had a problem with the toggles on the notification screen not updating... i.e. showing on even though i's turned off as shown in settings menu. I wiped dalvik and cache today... but again, no change.
I tried my sim on another handset and got connectivity, though a very slow connection. This is a peak mobiole usage time here, so bandwidth may be clogged, but no connection altogether?
Any help on how to get back data connectivity would be really appreciated.
Can you please tell me if there is any way to pinpoint if this is a network deficiency or a hardware or software issue? Can the radio malfunction for only mobile data leaving voice and WiFi intact?
I'm running:
Anzu,
CM10 FXP 235
BB64
Lupus for JB v12

Why are you using BB64? For CM10 you should be using BB77 or above.
僕のLT18iから送られてきた

popthosegaskets said:
For CM10 you should be using BB77 or above.
Click to expand...
Click to collapse
I have searched a lot,but never found recommendations for CM basebands anywhere!
Thanks I'll flash a new baseband and report back. Any specific recommendations?

subhrashis said:
I have searched a lot,but never found recommendations for CM basebands anywhere!
Thanks I'll flash a new baseband and report back. Any specific recommendations?
Click to expand...
Click to collapse
Well try using latest bb i think its bb85 then try testing it,i'm using bb83,i'm on gin2jb gingerbread rom,and it works just fine.Link to Bb you can find under my sig.There is how to flash and tut just follow it...good luck
Sent from my Xperia Arc LT15i using XDA

subhrashis said:
I have searched a lot,but never found recommendations for CM basebands anywhere!
Thanks I'll flash a new baseband and report back. Any specific recommendations?
Click to expand...
Click to collapse
For ICS, use BB77 and above, anything below will not work.
For JB, use BB85, although BB77 should work fine with it.
僕のLT18iから送られてきた

Thanks
Actually, I got back data connectivity once before I could flash BB85.. so most probably network was a factor.
Anyway... I managed to flash BB85, and connection is quite nice, except for the persistent issue of occasional mobile data drops -(toggles not updating) . Thanks!
By toggles not updating, what I mean is If I connect the phone to 2G - and leave it, sometimes the phone will show no data connection and greyed out signal bars, even though data quick toggle is on. If I turn it off, it will not grey out. If I turn on wifi, though, the data toggle finally turns off.. and turning it on after that reconnects 2G. Any idea what causes this?

[Q] bad mobile data

I'm having this connection issues where the phone would show the 3g/4g icon but the connection is really slow( slowest speedtest gave me was 0.01mbps). Im testing with a different provider now but is it possible this is a hardware fault?

Same Problem
I have a similar problem, when I enable Mobile Data, it could not connect, I have to turn Airplane mode ON and then OFF and then Mobile date On to get the Mobile Data... Very Irritating... I hope its SW issue

I have slower connection on 3g and h then previous devices

Well its only 4g giving troubles now, is 4g and 3g on one chip or a seperate chip?

Try cleaning cache of your browser

Don't think its browser related because its systemwide. Plus i tries a factory reset already

I've gotten this as well from time to time. Doesn't seem related to whether or not I'm transitioning from Wi-Fi to 4g or not.
Sent from my LG-D850 using XDA Free mobile app

pre10c said:
I'm having this connection issues where the phone would show the 3g/4g icon but the connection is really slow( slowest speedtest gave me was 0.01mbps). Im testing with a different provider now but is it possible this is a hardware fault?
Click to expand...
Click to collapse
I'm getting the same and came on here specifically to see whether it was just me.
These are the symptoms: it seems to happen when I transition from a WiFi network to mobile data network. The data icon still shows activity and good signal but internet access is incredibly slow or non-existent in all apps. Toggling in and out of Aeroplane mode fixes it. I am on a 3G SIM, so for now I have tried to turn of 4G mode and see if this fixes it. Will report back.
This is really annoying - my £100 Acer Liquid Metal did this like 3 years ago... I don't expect a modern £500 phone to have this issue.
I love the phone but issues like this aren't acceptable and I'm getting really frustrated to the extent I might even send it back for refund under not fit for purpose.

Also I have problems with unstable network. Has anyone tried to restore the firmware?

mowmo said:
Also I have problems with unstable network. Has anyone tried to restore the firmware?
Click to expand...
Click to collapse
I've turned off 4G as I don't have a 4G SIM, so I'm gonna see if this helps resolve the issue. If not, then I'm going to try and flash a different firmware as my handset came with a EUR firmware and there seems to be some differences between this and the UK firmwares. If that doesn't fix it, I'm going to try the AUS firmware which is a later version.
If I get an success or otherwise I'll post back.

I'm noticing that HTTPS traffic always seems to work fine, but standard non-encrypted traffic doesn't. Anyone else? Seems a bit weird.