Develop Bugs

[Q] Cellular network download issue

Here's the problem.
I installed many roms and kernels on my gnex since i bought it. Lately i came across a strange problem. If i install codename android, gummynex or foxhound with any kernel or radio i'm unable to download over cellular network. If i install android revolution hd or cyanogenmod 9 nightly its work even if i change the kernel or radio ??
Now when i say it doesnt download...my signals bar are max out on hspa+ but it aint blue, its gray. Usually when there is activity an arrows appears to show it. In my case case i only see the up arrow. I also when look under the *#*#4636#*#* menu and i data being uploaded but download is a 0. Ping test didnt work. Signal strength is around -85db. Preferred network is set to GSM/CDMA auto (PRL). I also tried to change it to GSM auto (PRL) and GSM only without success. I played with airplane mode. I tried turning on and off cellular data. Nothing works.
For now I'm on CyanogenMod 9 Nightly Build with Franco Kernel 16.2 and Gaaps 4.0.4 with XXKL1 radio. I have a Bell GSM Galaxy Nexus and my carrier is Rogers.
Does anyone have an idea of to fix it ?
P.S. I tried to wipe data/cache + dalvik + system.

I'd check your APN settings - sounds like some ROMs have the right ones, while the others may not.
Settings --. More --> Mobile networks --> Access Point Names
You can google around for the correct APN settings for Rogers. Here's the first hit I found: http://www.nexusoneforum.net/forum/...gers-wireless-apn-settings-data-mms-here.html

Thx a lot ! It worked ! Thx for your quick reply : )

Thnx since the OP didnt.

Bumping this.
This is my exact issue on T-mo USA. On nearly all radios, that is if I get a signal at all. Upload only no download. I've tried AOKP, Rooted deodexed icl53f, Slim, Liquid. Problem persists. What really chaps my ass is that it came with xxkk6 and now that one has no signal bars at all......
At least I can still make calls and send messages with no download radios.

your APN settings are wrong. read the how in this thread

I have apn set to these settings:
http://forum.xda-developers.com/showpost.php?p=21630221&postcount=1
Which are the same ones generated by using the "Reset to default" option. And what are listed in numerous other sources.

It sounds more like a firmware or hardware issue than an APN problem to me. You've said you tried a few different radio firmwares - have you tried UGLA4? I've had really nice results on T-Mobile US with that.
I'd try loading up the factory image with UGLA4 and see if that works for you. If that still doesn't play nice, you may need to look into getting a replacement.

codesplice said:
It sounds more like a firmware or hardware issue than an APN problem to me. You've said you tried a few different radio firmwares - have you tried UGLA4? I've had really nice results on T-Mobile US with that.
I'd try loading up the factory image with UGLA4 and see if that works for you. If that still doesn't play nice, you may need to look into getting a replacement.
Click to expand...
Click to collapse
Thanks for the info. Is there by chance an odin flashable for the GSM icl53f? I keep only returning hits for the CDMA version.

JediDru said:
Thanks for the info. Is there by chance an odin flashable for the GSM icl53f? I keep only returning hits for the CDMA version.
Click to expand...
Click to collapse
Not for ODIN, but you can get the official Google factory image here: https://dl.google.com/dl/android/aosp/yakju-icl53f-factory-89fccaac.tgz
You can extract it and flash the "image-yakju-icl53f.zip" file in fastboot:
Code:
> fastboot flash update -w image-yakju-icl53f.zip

I was able to restore but on xxkk6 I have no signal to speak of. Will have to go the Samsung route. The postal service has already lost one $350 dollar phone this month. So I'm very hesitant to be honest.
Sent from my Galaxy Nexus using xda premium

[Q] LTE issues after cm12 (virgin mobile a5_chl)

So as the title states I have the virgin mobile a5_chl variant and after flashing cm12 (build 05052015) I can no longer (or at least hardly ever) gain LTE signal back, no matter what ROM im on. It comes across saying I have no service and no signal and I can't text or call when trying to use LTE.
I have done the following to try and fix:
1. flash apn fix (obviously)
2. restore stock backup
3. try a different rom
4. completely RUU back to stock.
I believe the issue lies somewhere within the HtcOMADM_SPCS.apk but I'm not 100% sure about that. According to any thing i've found the HtcOMADM_SPCS.apk is the "vDM client" that allows for profile updates (when i try to do a profile update it either says vDM client has stopped responding or the the profile update could not be completed). I've tried uninstalling and reinstalling the HtcOMADM_SPCS.apk but that only provided a fix once and when i rebooted my phone I lost signal again.
I'm pretty much at a loss as to what to do as virgin mobile gives me the usual run around that they are "having tower issues" so I'm hoping maybe someone on here can help out. If you need any further information please ask and I'll provide, I tried to be thorough when creating this thread. Thanks for any help.

BUMP / Can someone from VM USA upload a copy of the HtcOMAD_SPCS.apk it can be found in system/app/HtcOMAD_SPCS. It would be very much appreciated if you could

Same exact issue
tsmith1223 said:
BUMP / Can someone from VM USA upload a copy of the HtcOMAD_SPCS.apk it can be found in system/app/HtcOMAD_SPCS. It would be very much appreciated if you could
Click to expand...
Click to collapse
Really weird been using cm12 worked well. Tried carbon worked perfectly! I went to bed and woke up no signal no data no anything . tried everything you did.
EDIT: just realized 3g also dose not work! in serious need of help. USA Virgin mobile phone. Rooted S-off. Currently back on carbon backups/new roms do not work. i get no service can only use wifi.
:crying::crying::crying:

data not working on stock rom but on flyme

Hello all,
I am from Austria and i have a bob-sim-card. It works with the A1-net. So i have to activate data-roaming.
As you see in the title, i have a problem with data connection. It couldn´t be solved with the technical support too, so i ask here for help, because i love my elephone!
I tried flyme and evereything worked fine, but i have all my contacts and apps backup on google, so i can´t use flyme. I went back to stock rom and the same again, data doesn´t work. It shows "U" or "3G" or "H+" in the display and the technical support also see connection, but firefox, wheather app, play store, .... can´t get data.
Does anybody has an idea???
Thanks and greetings from Austria,
Matthias

Try the following:
Go to Settings
select Data Usage
select your Carrier
Activate Cellular Data
Had the same problem (Phone showed 3G but there was no data connection) and this wasn't activated.

Thank you for the tip, it was off! But it doesnt work, with reboot too. I will make a few experiments more with these settings, its a little bit complicated to change sim for looking at xda.
Thanks and please for more ideas,
Matthias

I'v gone to Engineer Mode with *#*#3646633#*#*. CDS-Information says:
Network Information List:
(0)MOBILE()
state DISCONNECTED/DISCONNECTED
reason: (unspecified)
extra: (none)
roaming: false
failover: false
isAvailable: true
isConnectedToProvisioningNetwork: false)
Can anybody read this information? Data-roaming is "on".
There are a few more connections as mms, wifi,... This is the one that don't work i think.
Greetings, Matthias

huh, strange problem you have there - if you really do have to go back to flyme you can flash gapps for lollipop(around 200mb mini version) or whichever gapps package suits you. I did this and it worked fine, also installed nova launcher as hated the miui launcher!
your problem does seem to to do with the data roaming but unfortunately I'm not sure how to force this setting on...

Hello back again,
So there is a solution with installing gapps separat. Thanks for that!
I think the first custom roms are coming soon, perhaps cyanogenmod or something other? This would be wonderful!
P. S. I destroyed my imei with flashing, have to repair, perhaps it changes data-connection too?
Matthias

Not sure about the imei but I suppose it's possible, maybe have to try flyme again then! Hope CM put a rom out for us soon.

I did it!
Hello all,
the phone is working well now! Thanks for all helpers, there were two problems, here are the solutions:
1) When flashing the latest stock rom imei is destroyed. You can solve this with "MTK Engineering Mode" from playstore.
You open the app and go to: MTK Settings, Connectivity, CDS Information, Radio Information, Phone 1.
Here you have at the top "AT+". here you complete to >>AT+EGMR=1,7,"123456789012345"<<, of course with your imei, which ist standing on the akku-cover.
Then, very important: You have to put in a space after "AT+", so it looks like >>AT+ EGMR=1,7,"123456789012345"<<
Click "SEND AT COMMAND". Thats it.
For the second imei do the same with >>AT+ EGMR=1,10,"123456789012345"<<
2) The second thing is that you have to turn on data roaming at two places.
Settings, Data usage, Card 1, Cellular data and
Settings, More, Cellular networks, Data roaming
So, i hope to help at these problems, i´m very glad with this phone now although i have a few more grey hairs.
Greetings, Matthias

Glad you got it working again and thanks for posting the guide from the bbs forum here though strangely my imei has survived through at least half a dozen flashes(probably more actually!) but I may need this recovery solution one day when more roms come out.

change imei
Perhaps a mod can change the title to "change imei" or something similar?
Matthias

Data working
Not sure if this was mentioned but people who have problem with data network 3G etc I seem to found a solution.
Simpler that it seems. You just need to set up a APN in you settings. Never had to do that with my previous phone (Galaxy S3) so it was a surprise for me.
You just need to find the settings from your provider (they usually have it at their website) and then you should be fine.

Matthias Neubacher said:
1) When flashing the latest stock rom imei is destroyed.
2) The second thing is that you have to turn on data roaming at two places.
Settings, Data usage, Card 1, Cellular data and
Settings, More, Cellular networks, Data roaming
Click to expand...
Click to collapse
No the imei is not destroyed per default by flashing, it might be destroyed by a faulty flash.
I flashed mine a couple of times now without any problems
And no, you don't need Data Roaming on (unless you are roaming).
Cellular data need to be turned on though as it's off by default after flashing.
Just to make things clear

Thanks sharkware, i flashed with sp-flashtool on Win7. Good for you when your imei is ok. Mine was not, no problem.
I have to activate data-roaming because i use a provider who has no own net but works together with a big provider.
Thanks for your comment, i see clearer now.
Matthias

BenTrask said:
Try the following:
Go to Settings
select Data Usage
select your Carrier
Activate Cellular Data
Had the same problem (Phone showed 3G but there was no data connection) and this wasn't activated.
Click to expand...
Click to collapse
You, sir, are my hero! :laugh:

LG G3 4G Network Drops

So the problem I'm having with my G3 is that the Network either drops and comes back repeatedly or completely drops and does not return. This only happens on 4G. When I go into network settings and change network mode to 3G it works fine and I get a constant signal all the time.
I have been using Fulmics ROM and I thought maybe that was the issue. But it wasn't.
I tried 3 different sims from three different carriers (Three, EE, O2) on several stock firmwares. (20N, 21C, 30A, 30F).
Each scenario is the same; network drops when phone is on 4G network mode, but its fine on 3G mode.
However, I have noticed that if I leave Wifi OFF allowing 4G data to connect first, then its fine. I can even turn Wifi ON again and the network is stable. I can even turn Wifi and Data OFF and the network is still stable.
But, if I toggle aeroplane mode, where Wifi connects first or where Wifi and Data is turned OFF; I am back to the network dropping.
Also, I live in London UK so there should not be any signal issues. Can anyone tell me why this is happening. I doubt it's software issue as I've tried several firmwares.
Any help is appreciated.

Mate I'm afraid there is a high possibility it's the Fulmics ROM.. I'm still trying to read up on the issue myslef, there's a ton of reports in the Fulmics thread and around.

I'm using an UK bought LG G3 as well (from Three) and started experiencing similiar issues after I flashed Fulmics. Even tried rolling back to 4.4.2 using a .tot file but didn't really help me.
Still scouring all around trying to find how to fix the issue..

engmia said:
Mate I'm afraid there is a high possibility it's the Fulmics ROM.. I'm still trying to read up on the issue myslef, there's a ton of reports in the Fulmics thread and around.

I'm using an UK bought LG G3 as well (from Three) and started experiencing similiar issues after I flashed Fulmics. Even tried rolling back to 4.4.2 using a .tot file but didn't really help me.
Still scouring all around trying to find how to fix the issue..
Click to expand...
Click to collapse
Hmmm looking back now this issue did start when I first installed fulmics 3.5. But shouldn't everything revert back to stock when you reinstall stock firmware.

thufz9585 said:
Hmmm looking back now this issue did start when I first installed fulmics 3.5. But shouldn't everything revert back to stock when you reinstall stock firmware.
Click to expand...
Click to collapse
That's what I thought but I guess it's a little bit more tricky.
Anyways I think I managed to restore some kind of stability in the signal, still unsure about the process though. Seems that different stuff are working for different people. In a few days I hope to have some information to give you how to fix it.
In the meantime try checking the Fulmics thread for ideas and suggestions (that's where I start off from).

engmia said:
That's what I thought but I guess it's a little bit more tricky.
Anyways I think I managed to restore some kind of stability in the signal, still unsure about the process though. Seems that different stuff are working for different people. In a few days I hope to have some information to give you how to fix it.
In the meantime try checking the Fulmics thread for ideas and suggestions (that's where I start off from).
Click to expand...
Click to collapse
Yeah let me know when you find a fix. Really appreciate the help.
One thing that is sort of a temporary fix for me, works on Three, EE and O2 (only ones i tried), is connecting Data first when on 4G mode.
So if I toggle airplane mode and if Wifi connects first then the network drops or keeps refreshing.
But, if I leave Wifi OFF and Data establishes a connection; the network is stable and I can then turn Wifi On again and the network will remain stable.
I just have to make sure the network does not lose connection (i.e. tunnel or airplane mode), and if it does ensure Data connects first.
Also, another thing. After I reinstalled Fulmic 5.3 it seems 4G mode is sort of stable. As in when on 4G mode instead of dropping the network it connects via 3G automatically. But this only happens with Three.

thufz9585 said:
Yeah let me know when you find a fix. Really appreciate the help.
One thing that is sort of a temporary fix for me, works on Three, EE and O2 (only ones i tried), is connecting Data first when on 4G mode.
So if I toggle airplane mode and if Wifi connects first then the network drops or keeps refreshing.
But, if I leave Wifi OFF and Data establishes a connection; the network is stable and I can then turn Wifi On again and the network will remain stable.
I just have to make sure the network does not lose connection (i.e. tunnel or airplane mode), and if it does ensure Data connects first.
Click to expand...
Click to collapse
Okay here is what worked for me - open this guide and download the Three specifiic Lollipop and Marshmallow .kdz files.
Flash the stock Marshmallow firmware first using the LG Flash Tool method. Your phone probably won't automatically get recognized since you're running Fulmics now so you'll need to change the COM port as described in post #
After that downgrade to stock Lollipop using the LGUP method. Personally I downloaded more updated (I think, not sure) files from here.
Then I proceeded to re-root and clean install Fulmics 5.1 and the 5.2 and 5.3 OTA updates from recovery. Booted and network works without drops now with 4G connectivity.
thufz9585 said:
Also, another thing. After I reinstalled Fulmic 5.3 it seems 4G mode is sort of stable. As in when on 4G mode instead of dropping the network it connects via 3G automatically. But this only happens with Three.
Click to expand...
Click to collapse
I changed my carrier and got an automatic SMS with configuration for my phone and instructions to save it. I should've known something was fishy when I recieved the "congratulations for setting up" message even before I recieved the actual settings. Anyways 4G was running fine on my new carrier with 32 mbps speed which is okay, much better compared to the same carrier 3G network, however I only had 3 bars of connection so I gussed what the heck, I should save that configuration after all, it might make things better. What a bloody mistake. I lost 4G connectivity and my phone refused to connect to the 4G network, only 3G (just as you describe).
What worked for me in this scenario was wiping the cache and dalvik (not really sure this step is even necessary to be honest, but I was headed for a full rom re-wipe anyway and decided to try with this first), going into the hidden menu and choosing LTE only connectivity (Fulmics Tweaks -> Hidden Menu [or the hidden code for the phone app if you decided to stay on stock, which I dont have] -> Modem Protocol -> RAT Selection -> LTE only. At this step my phone got to the usual 3 to 4 bars of connectiviy but was displaying "Emergency mode only" and no data at all. I proceeded to Settings -> Networks -> More -> Mobile Networks -> Access point names -> Reset to default from the menu. If network mode doesn't change back to GSM/WCDMA/LTE auto automatically, change it back manually. At this point I had restored back my 4G connection and everything is working normally (30-32 mbps connection stationary in my house through a wifi hotspot next to my laptop).
Good luck, I would follow the steps as described just in case. I tried many reflashes before that should've worked but didn't for me. However different things work for different people, hope this works for you and please report back

engmia said:
Okay here is what worked for me - open this guide and download the Three specifiic Lollipop and Marshmallow .kdz files.
Flash the stock Marshmallow firmware first using the LG Flash Tool method. Your phone probably won't automatically get recognized since you're running Fulmics now so you'll need to change the COM port as described in post #
After that downgrade to stock Lollipop using the LGUP method. Personally I downloaded more updated (I think, not sure) files from here.
Then I proceeded to re-root and clean install Fulmics 5.1 and the 5.2 and 5.3 OTA updates from recovery. Booted and network works without drops now with 4G connectivity.
Click to expand...
Click to collapse
I'd like to thank you so much for this information! I was having signal drop issue after installing Fulmics ROM. Tried to flash stock ROM but no success. After doing the downgrade via LGUP method to LP my phone is getting full signal again (at least I didn't notice any drop until now).
Thank you!

waltertakashi said:
I'd like to thank you so much for this information! I was having signal drop issue after installing Fulmics ROM. Tried to flash stock ROM but no success. After doing the downgrade via LGUP method to LP my phone is getting full signal again (at least I didn't notice any drop until now).
Thank you!
Click to expand...
Click to collapse
Glad I could be of help!

engmia said:
Okay here is what worked for me - open this guide and download the Three specifiic Lollipop and Marshmallow .kdz files.
Flash the stock Marshmallow firmware first using the LG Flash Tool method. Your phone probably won't automatically get recognized since you're running Fulmics now so you'll need to change the COM port as described in post #
After that downgrade to stock Lollipop using the LGUP method. Personally I downloaded more updated (I think, not sure) files from here.
Then I proceeded to re-root and clean install Fulmics 5.1 and the 5.2 and 5.3 OTA updates from recovery. Booted and network works without drops now with 4G connectivity.
Click to expand...
Click to collapse
Sorry for the late reply.
I followed your instructions and unfortunately it didn't work. :crying:
I first tried with the D85520f you provided and then with an updated D85521C firmware. But nothing worked.
The temporary fix, which I found works, is to ensure 4G mobile data establishes a connection first before Wifi (turn Wifi OFF then ON after data established). Then there is no signal drop until I go through a tunnel or phone restarts (signal drops completely), which means again i have to ensure 4G mobile data establishes a connection before Wifi or else it'll go back to the constant signal dropping.
Guess I'll just stick with 3G at all times. I've spent too much time trying to correct this than actually finding enjoyment in using the phone.
Anyway really appreciate the time and effort you took to help with this annoying situation. :good::good::good:

thufz9585 said:
Sorry for the late reply.
I followed your instructions and unfortunately it didn't work. :crying:
I first tried with the D85520f you provided and then with an updated D85521C firmware. But nothing worked.
The temporary fix, which I found works, is to ensure 4G mobile data establishes a connection first before Wifi (turn Wifi OFF then ON after data established). Then there is no signal drop until I go through a tunnel or phone restarts (signal drops completely), which means again i have to ensure 4G mobile data establishes a connection before Wifi or else it'll go back to the constant signal dropping.
Guess I'll just stick with 3G at all times. I've spent too much time trying to correct this than actually finding enjoyment in using the phone.
Anyway really appreciate the time and effort you took to help with this annoying situation. :good::good::good:
Click to expand...
Click to collapse
Modem 21C should be your answer! Please try with that.

Is anyone still out there
engmia said:
Modem 21C should be your answer! Please try with that.
Click to expand...
Click to collapse
I flashed dummies and get dropped 4g data like this.
I have tot back to stock and didn't help... not Kdz
Haven't downgraded yet to LP yet.
On turborom now.
Can I just flash this modem? Have a link to the 21c modem?
Flash in twrp or send via LG flash?

Problems choosing a good Preferred Network Type

Hi, I have the US Unlocked version on T-Mobile, I've been running an M-based Sense ROM for a couple months, and yesterday I did S-OFF, flashed to N firmware 2.38.617.6, and went to the new LineageOS ROM.
Everything mostly works, but I didn't get onto the cell network until I started manually setting Preferred Network Type. Now I can't find one that is stable for voice and data, and I don't know if I should be looking for help in the ROM thread or the Firmware section, or what logs are useful to troubleshoot this.
When I set Global, I was able to get LTE for a short time, then I got disconnected from the network entirely. Other GSM/WCDMA options sometimes give 3G/H+ icons, other times are voice but no data. Choosing LTE leaves me disconnected.
Normally I'd prefer to have updated one thing at a time so it's clearer where a problem comes from, but in this case it was safer to update ROM and firmware at the same time.as the hybrid case isn't always stable.
Any suggestions on what sub-area might best help advise, and what info I can gather?
Thanks!