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Hello everyone, I've seen some other threads about similar signal loss issues or problems on the i927 around xda, but none of them worked or were compatible with the type of problem I'm having. I recently installed the January 6, 2013 build of Paranoid Android v2.+ on my i927, and it works great. However, I've been having one major issue that renders my phone useless. After about an hour or so of having the phone on, I lose ALL signal to my cell network (AT&T). There are no signal bars, no messages/MMS/calls can be made or sent, and I end up having to reboot my phone for it to function properly again for another hour or two.
I've tried what some users around xda have suggested such as taping my SIM card in place or wiping cache/dalvik cache in recovery, but as of yet nothing has worked
If anyone can help me, it would be GREATLY appreciated. I'm stumped at this point after exhausting all the options I thought would work. I really want to keep this ROM on my phone, it works better than stock or any other ROM I've tried yet by far.
Thanks in advance!
-MrDaggs
ALSO, I can post screenshots or any additional information if it's helpful in any way.
How did you unlock? I've had problems with signal when I unlocked via galaxsim unlock tool. Check your /efs/Nv.log for errors, I had an error connected with md5 sum every second or so.
For me, the other unlock way solved all the problems.
can you see in about, your imei, maybe is corrupt. see this link, maybe help http://forum.xda-developers.com/showthread.php?t=2019540
I haven't unlocked my phone, it was sold to me as an AT&T phone. I don't think my IMEI should be the problem
Sent from my rooted Samsung Captivate Glide i927 using Tapatalk
I also experienced this issue on 4.1.2, so I moved to 4.2.1 hoping to avoid it, yet this morning issue happened again with thegreatergood's i927 - CM10.1 - 1/22/2013. My IMEI is ok, unlocked by entering the unlock code given to me by ATT.
Note I am able to restore connection by switching on and off airplane mode, might save the time of reboot.
paganinia said:
I also experienced this issue on 4.1.2, so I moved to 4.2.1 hoping to avoid it, yet this morning issue happened again with thegreatergood's i927 - CM10.1 - 1/22/2013. My IMEI is ok, unlocked by entering the unlock code given to me by ATT.
Note I am able to restore connection by switching on and off airplane mode, might save the time of reboot.
Click to expand...
Click to collapse
Yeah, I've tried every now and then to reset my connection by toggling airplane mode on/off, and it usually works for me too. I'm just stumped on why there's an issue with the signal at all to begin with, it doesn't make sense to me
I confirm, I also experience connection lost from time to time. And I also restore it with switching airplane mod on/off.
The same problem with 4.2.1
Hi! I had the same problem with the phone. The signal was totally off. I was using LiquidSmoth 4.2.1. I gave a solution flashing the rom another time.
I've seen this on AT&T's ICS firmware, it gave me this issue often and for me a reboot was the only fix.
I've upgraded to CM 10.1 and I am hoping it fixed the problem. If not, I will try flipping airplane mode off and on, I don't like battery out reboots, but if it doesn't any more suggestions welcome.
Thanks.
tech927
I've been using cm10.1 for months now & haven't had any issue with signal dropping. Did have if happen with other roms, but I think it's something to do with the kernel more than the rom. They just released rc1 of cm10.1 has the latest kickass kernel.
So I have rooted my S4 Mini, as described here and installed JellyBean version of Carbon rom for S4 Mini LTE (i9195, my model).
I used this guide when rooting and I used this rom version.
Everything works as should, but my data network is behaveing strangely. It's not that it's not working, it does connect to via H+, 3G (which imediatley turns into DC which is something I haven't seen on stock rom). But it connects only sometimes and doesn't work at other times in places where it definitly should. And 4G never works (in places it worked on stock).
Disregard Wi-fi part, I had some issues with my router, there was never a problem with my phone (at least regarding the Wi-Fi)
My APN is fine, it wouldn't be able to connect otherwise (and I checked the settings).
Any ideas?
Ask for any additional information. =)
Karlovsky120 said:
So I have rooted my S4 Mini, as described here and installed JellyBean version of Carbon rom for S4 Mini LTE (i9195, my model).
I used this guide when rooting and I used this rom version.
Everything works as should, but my data network is behaveing strangely. It's not that it's not working, it does connect to via H+, 3G (which imediatley turns into DC which is something I haven't seen on stock rom). But it connects only sometimes and doesn't work at other times in places where it definitly should. And 4G never works (in places it worked on stock).
Disregard Wi-fi part, I had some issues with my router, there was never a problem with my phone (at least regarding the Wi-Fi)
My APN is fine, it wouldn't be able to connect otherwise (and I checked the settings).
Any ideas?
Ask for any additional information. =)
Click to expand...
Click to collapse
I hope somebody else knows, but if you don't find any solution just change the rom
FOUND FIX!!!
I too had this problem on 4.3.1 carbon rom. I wiped data using recovery boot and at first it didn't help. But it started working again in a few seconds. Magical fix. Let me know if this works for you too.
Karlovsky120 said:
So I have rooted my S4 Mini, as described here and installed JellyBean version of Carbon rom for S4 Mini LTE (i9195, my model).
I used this guide when rooting and I used this rom version.
Everything works as should, but my data network is behaveing strangely. It's not that it's not working, it does connect to via H+, 3G (which imediatley turns into DC which is something I haven't seen on stock rom). But it connects only sometimes and doesn't work at other times in places where it definitly should. And 4G never works (in places it worked on stock).
Disregard Wi-fi part, I had some issues with my router, there was never a problem with my phone (at least regarding the Wi-Fi)
My APN is fine, it wouldn't be able to connect otherwise (and I checked the settings).
Any ideas?
Ask for any additional information. =)
Click to expand...
Click to collapse
Hi, I'm install the [ROM][UNOFFICIAL][4.4.4] CarbonRom KitKat Weekly's [S4 Mini 3G/LTE/3GDS] [app2sd] on my S4 Mini I9195 LTE and I have no problems with the data network... you could try that ROM, is awesome.
The only issue i have is in the Lockscreen... can't set the weather option in the Lockscreen... the Lockscreen no shows the wheather.
If any can help me with how do that, I will apreciated...... (sorry for my bad english... I'm from South America).
Cheers!
Karlovsky120 said:
So I have rooted my S4 Mini, as described here and installed JellyBean version of Carbon rom for S4 Mini LTE (i9195, my model).
I used this guide when rooting and I used this rom version.
Everything works as should, but my data network is behaveing strangely. It's not that it's not working, it does connect to via H+, 3G (which imediatley turns into DC which is something I haven't seen on stock rom). But it connects only sometimes and doesn't work at other times in places where it definitly should. And 4G never works (in places it worked on stock).
Disregard Wi-fi part, I had some issues with my router, there was never a problem with my phone (at least regarding the Wi-Fi)
My APN is fine, it wouldn't be able to connect otherwise (and I checked the settings).
Any ideas?
Ask for any additional information. =)
Click to expand...
Click to collapse
same problem. Do you use a 3G or 4G signal from your network provider ?
Possible fix for you
sheky01 said:
same problem. Do you use a 3G or 4G signal from your network provider ?
Click to expand...
Click to collapse
Hi again, i spent hours trying to fix this and came up with a solution:
Make a back up of your current rom
Use Odin to flash the I9195XXUBMJ7_I9195OXABMJ7_DBT file ( can provide if needed ) to go back to stock firmware
Make note of the APN settings of the stock firmware, then restore the back up and change the apn settings to the same as the stock and it should work.
This worked for me.
Went back to stock and it worked well enough (as intended). However I just installed the official Cyanogen ROM and it works like a charm. Latest nightly build (01.02.2014.)
Hello,
I've just got a Nexus from my father.
Unlock and rooting are OK.
I've made a backup of my stock rom
Then I've installed a cynogenmod 4.4 and see that my 3G download speed is very slow (arround 5Ko/s)
Then I've returned back to my stock rom -> same issue.
I'm in France using Free Mobile (which is using roaming)
Please help me!
EDIT: RESOLVED
I've tryed a new SIM Card and the speed is OK.
Next I used my old sim card, the speed is OK too.
Strange...
I really need help because I am unable to get a good 3G connection.
Have reinstalled the last radio -> nothing
Have reconfigured APN -> nothing better
Really need help, take 1h to dl 20Mo
EDIt: The signal is full
Someone could help me ?
I've found that the issue happens only when I'm in roaming.
If I am connected directly to my provider antenna, no issue.
HeadQuaker said:
I've found that the issue happens only when I'm in roaming.
If I am connected directly to my provider antenna, no issue.
Click to expand...
Click to collapse
Its probably just an issue with your operator, the ROM most likely doesn't have to do anything with it, especially as you said if you flashed the stock radio.
latenightchameleon said:
Its probably just an issue with your operator, the ROM most likely doesn't have to do anything with it, especially as you said if you flashed the stock radio.
Click to expand...
Click to collapse
Sorry but no, like I said, it worked before the flash, and now, it is not working anymore.
In same time, it works really well with my 2nd phone, with the same sim card.
What is done:
first I flash 30B bump, the problems starte. then flash 30B LGUp, flash 21a and 21c, change band in ingeneering menu, delete lteconfig, flash 30b bump with modems: 21a, 21c, 30b hybrid, change of operator, manual config APN, manual search network. All this does not help.
Any ideas?
no ideas?
Idem.
But after reboot 4G is ok, but again...every morning i lost signal 4G...only 2G/3G is ok. So..reboot & 4G is up......disappointed.
Same on my G3. I downgrade from MM to LP but problem persist.
Same here....tried rollback to kitkat stock, LP stock, CM12, Cm13, and some other roms with no luck....have just flashed stock LP for repair...
so today I tried swapping my SIM with my friend's
he is using G3 with stock 21A, and his SIM is of the same carrier as mine
after swapping, I found that my phone (and of course his phone, too) is working normally
my phone is normal even after swapping back
did some different tests like switching on and off with 3G, LTE etc., everything is normal, at least at this moment
Still working with you? So it is sim card fault? With me after searching networks everything seems to be ok, but I couldn't connect with LTE. Only sometimes successfull connection.(once a day and after reboot same...) Very strange. :/
I lost network signal randomly... i tried with 30b hybrid modem, 21a, 21c... kdz method, twrp bumped rom... and doesnt help me at all.. my network signal gets a rotating circle randomly... and in that time my phone is out of coverage... it is .... hundred times in a day... i dont know what to do, please help
same here when i use sucks 30b D855, but now everything is ok with me.
Steps that have been followed:
downgrade to lollipop 5.0
install CandySIX Rom , then try to connect to my carrier network , at the first time it not give me anything , but when i reboot my phone , LTE appears and everything fine
back to CloudyG3 2.5 then i found that the problem resolved
My phone now works well
OKAY, i found a solution to the problem and here is what i found :
Pacote-san said:
Same here...
Edited: Fixed this deletings the folder LTEconfigs on System/app
Had to then configure it to auto GSM/WCDMA then switch back to LTE auto
It connected at first with 3g then it went LTE and worked normally
Click to expand...
Click to collapse
i made it and not i have no drop in connection and i am sure that i will receive the next important call from my colleges.
I hope that this help you as it helped to me!
All the best!
goly1993 said:
Still working with you? So it is sim card fault? With me after searching networks everything seems to be ok, but I couldn't connect with LTE. Only sometimes successfull connection.(once a day and after reboot same...) Very strange. :/
Click to expand...
Click to collapse
Some people got their phones back to normal by flashing some roms (like CM, ACIP, stock, etc.), but that didn't work for mine
not sure if it was sim card fault, but my problem solved (at that time i was back to LP stock 20h) after swapping my sim cards with my friend's.
i am still using that sim card at this moment, working fine since last thursday
Same problem here, have signal drops on MM roms with LTE connection.
Tried all methods above, nothing really helps .. ;((
The signal is fine on LP roms, tho i installed N&N so i was able to change network type to GSM/WCDMA auto, having steady signal now, but missing LTE speed, trying to find solution to fix this, but unfortunately for now.
Same, my G3 doesn't recognize my sim sometimes or it just loses signal randomly, making the smartphone almost useless.
I tried CloudyG3 2.5 Lollipop, then upgrading to Marshmallow with many radios flashed (also the hybrid one) , then I tried to come back to a stock Lollipop ROM and the signal is always unstable. I'm going crazy due to that. I'm starting to lose hope too.
I think I've tried every possible solution to the connectivity problems I've read since flashing 30b.
Freezing LteConfigs gave me more stability, but didn't solve the problem completely. Tried editing the build.prop to force LTE as preferred network type, this didn't change anything. Don't even know how many times I've changed my apn settings.
Tried every combination of modems possible: 21a/c modem with 30b rpm/tz, pure 21a/c, pure brazilian 20c, brazilian 20c with 30b rpm/tz and nothing. Changed sims multiple times, didn't work.
The only way to get a reliable connection is to limit the phone to 3G... but that isn't a solution since I pay for unlimited 4G. If I let the phone in auto mode, the instant it tries to connect I lose all connectivity and it would take up to 2 minutes searching for the network.
I'll flash the stock rom today and if it doesn't work I can safely say it should be a hardware problem.
soulstaker said:
I think I've tried every possible solution to the connectivity problems I've read since flashing 30b.
Freezing LteConfigs gave me more stability, but didn't solve the problem completely. Tried editing the build.prop to force LTE as preferred network type, this didn't change anything. Don't even know how many times I've changed my apn settings.
Tried every combination of modems possible: 21a/c modem with 30b rpm/tz, pure 21a/c, pure brazilian 20c, brazilian 20c with 30b rpm/tz and nothing. Changed sims multiple times, didn't work.
The only way to get a reliable connection is to limit the phone to 3G... but that isn't a solution since I pay for unlimited 4G. If I let the phone in auto mode, the instant it tries to connect I lose all connectivity and it would take up to 2 minutes searching for the network.
I'll flash the stock rom today and if it doesn't work I can safely say it should be a hardware problem.
Click to expand...
Click to collapse
I had exactly the same problems I tried all of the solutions mentioned modems/roms/etc but what solved it for me was flashing the Pure stock MM kdz now no signal drops or 4g problems.
tallman43 said:
I had exactly the same problems I tried all of the solutions mentioned modems/roms/etc but what solved it for me was flashing the Pure stock MM kdz now no signal drops or 4g problems.
Click to expand...
Click to collapse
Did you root after flashing the kdz? I'll try with pure 30B but having no root is almost as bad as no 4G.
soulstaker said:
Did you root after flashing the kdz? I'll try with pure 30B but having no root is almost as bad as no 4G.
Click to expand...
Click to collapse
No not rooted it yet, to be honest I don't like the kingroot app it looks way too suspicious to me + the rom is smooth and stable at the moment so I thought I would stick with stock for a while.
Sent from my LG-D855 using Tapatalk
You could take a look on this : http://forum.xda-developers.com/lg-g3/help/annoying-lg-g3-problem-lte-signal-solved-t3293721
This is my answer to this mass problem. Hope this help yo all you !
mccloud90 said:
You could take a look on this : http://forum.xda-developers.com/lg-g3/help/annoying-lg-g3-problem-lte-signal-solved-t3293721
This is my answer to this mass problem. Hope this help yo all you !
Click to expand...
Click to collapse
This worked for me after nothing else had. Thanks a lot!
Sent from my LG-D855 using Tapatalk
adamw said:
This worked for me after nothing else had. Thanks a lot!
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
just say thanks into that thread and vote to be able to other members to be sure that this helps. I am so happy that this method helped you. HF
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?