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LG g2. not register on 2G network

I purchased one LG g2 from eBay Att branded. I unlocked it for my GSM sim.
root it and installed TWRP.
installed kitkat but getting problem with network connection. phone able to connect on 3G network but not able to connect on 2G network with any carrier.
I also installed AOSP ROM but still problem same so kindly solve this issue as my area having very low 3G connectivity. I also tried cloudy rom but no luck.
kindly help.

arunkarnwal1981 said:
I purchased one LG g2 from eBay Att branded. I unlocked it for my GSM sim.
root it and installed TWRP.
installed kitkat but getting problem with network connection. phone able to connect on 3G network but not able to connect on 2G network with any carrier.
I also installed AOSP ROM but still problem same so kindly solve this issue as my area having very low 3G connectivity. I also tried cloudy rom but no luck.
kindly help.
Click to expand...
Click to collapse
Try flashing stock ZVC after wiping everything except internal SD.Root using ioroot , install autorec and flash twrp .. again wipe and flash cloudy kitkat base band then install rom.
Fresh install would probably solve it.

Akshaimk said:
Try flashing stock ZVC after wiping everything except internal SD.Root using ioroot , install autorec and flash twrp .. again wipe and flash cloudy kitkat base band then install rom.
Fresh install would probably solve it.
Click to expand...
Click to collapse
i searched on net but not found any KDZ for d800, so i downloaded TOT file and Dll for lg flashtool with flashtool dll but whenever i tried to flash flashtool give me failed previousload error. so not able to get back on stock
i already trired five different computer but all show same error.
kindly help me.

Cross region flash on H870DS

Hi all,
Is it possible flash 870DS TWN firmware to my IND 870DS?
If yes, please advise what to do..
Many thanks!!
Update:
Please take your own risk to flash your H870DS
I've solved the problem of flashing HK rom which I following the link as below:
Finally I got VoLTE now and so far working fine
https://forum.xda-developers.com/v20/how-to/v20-kdz-restore-failing-9-completing-fix-t3546817
HKG 10C rom
https://yadi.sk/d/6jLA4ftE3Jmaaz
*i flashed my Indian H870DS from 10C_IND_XX to HKG_10C_DS2_YT
Anyone know what's the meaning of DS2_YT?
Thanks a lot

Strange i download the hk version to.H870DS10c_00_OPEN_HK_DS_OP_0426. I dont see DS2?
You have any idea if it got netherlands language? Otherwise it's useless for me to flash
I would like to flash the Hong Kong over the Taiwan version.maybe it get faster upcoming updates.

Failing to flash
Hi,
I think I have bricked my phone. I received a H870DS witn TWN rom and decided to flash a CIS rom, so I followed the guide referred in this thread.
The procedure seems to happen happily but fail at some point with a nice error : LGUP 0x2BC, Invalid command response code = 0x80000202. At this point I can restart the process.
The phone is apparently only able to boot in Firmware Update mode (or am I missing something ?) What are my options to try to resolve the issue...?
Note: the error message is displayed usually after 50% in the upgrade process. It always happens somehow when the phone stops to display the COMXX port in green as well as the blue progress bar (as if it has encountered an error while flashing and restarted, I saw briefly some red text displayed at the bottom)
Any ideas ?
Thank you.

Did you flash the dual sim version? Otherwise you could brick.
For example i got the lg common.dll file and the hk-twn rom in folder that could be flashed with lgup to H870DS..
i once bricked my device with accident to debloat and reflashed twn rom.Afterwards it could start to bootloop and you will have to try to get in recovery to reset and data and afterwards it could start up just fine.

Don1003 said:
Did you flash the dual sim version? Otherwise you could brick.
For example i got the lg common.dll file and the hk-twn rom in folder that could be flashed with lgup to H870DS..
i once bricked my device with accident to debloat and reflashed twn rom.Afterwards it could start to bootloop and you will have to try to get in recovery to reset and data and afterwards it could start up just fine.
Click to expand...
Click to collapse
Yes I flashed a DS rom, this is the one I tried to flash : H870DS10d_00_OPEN_CIS_DS_OP_0418.kdz
Anyway, I tried one more time the HK one (same as yours) and this time it completed (I tried first the CIS, it failed, then I tried the HK and it failed, I uninstalled and reinstalled everything on the PC, force restarted the phone, tried the CIS and it failed again, tried the HK and it passed...)
I guess I will stop messing with it, not sure if flashing the CIS rom will give something more appropriate to the actual region the phone will be used : France. The two things I noticed are : country issues with LG Smart World (but who cares) and the phone doesn't pick up my 5GHz ac Wifi (channel 36 used) whereas it sees the 2.4GHz just fine. I have not tried to put a SIM in this baby yet, so maybe there will be some surprise here as well.

Great you could fix it Maybe the cause of a corrupt install is from what i catch up,if you flashed a rom with lgup you should reinstall it again when you would flash a other rom. I did not flash the HK rom because i dont know what will happen with future OTA if it will update or not if it get netherlands language.most of europe got that problem,lg smartworld i debloated because it connect from a korean server.im fine with twn rom
Good luck with it

Did you use Uppercut? I did, and flashing CIS OPEN went flawlessly. Got less bloat, correctly shown ststusbar icons and better battery life. Living in Sweden.

MrDeacon said:
Did you use Uppercut? I did, and flashing CIS OPEN went flawlessly. Got less bloat, correctly shown ststusbar icons and better battery life. Living in Sweden.
Click to expand...
Click to collapse
On Reddit there is a topic about a july CIS firmware update. Do you already have it?

MrDeacon said:
Did you use Uppercut? I did, and flashing CIS OPEN went flawlessly. Got less bloat, correctly shown ststusbar icons and better battery life. Living in Sweden.
Click to expand...
Click to collapse
No I have not. Only LGUP with the dll extracted from the kdz file...
I have not tried again to flash it. Where have you downloaded the CIS ROM ?
I'm not sure I'll flash it again. My only concerns was for the Wifi (I can't see my 5GHz Wifi network on the LG whereas every other AC devices can...)
What do you mean with "correctly show statusbar icons" ? The icons for the cellular network (3G 4G etc...) or is it something else ?

I did try CIS rom (v10d-global-com)over my TWN (v10c-twn-xx) and lg bridge was a problem to identify. Instead of h870ds it identify as g6 and udate was v10c only while CIS got v10d also april patch installed. While i try to recover tru bridge it got twn again. So i keept original TWN

StephaneM93 said:
No I have not. Only LGUP with the dll extracted from the kdz file...
I have not tried again to flash it. Where have you downloaded the CIS ROM ?
I'm not sure I'll flash it again. My only concerns was for the Wifi (I can't see my 5GHz Wifi network on the LG whereas every other AC devices can...)
What do you mean with "correctly show statusbar icons" ? The icons for the cellular network (3G 4G etc...) or is it something else ?
Click to expand...
Click to collapse
5GHz wifi will be enabled after you put in a simcard. I don't know why but that is the way to activate 5GHz.

StephaneM93 said:
No I have not. Only LGUP with the dll extracted from the kdz file...
I have not tried again to flash it. Where have you downloaded the CIS ROM ?
I'm not sure I'll flash it again. My only concerns was for the Wifi (I can't see my 5GHz Wifi network on the LG whereas every other AC devices can...)
What do you mean with "correctly show statusbar icons" ? The icons for the cellular network (3G 4G etc...) or is it something else ?
Click to expand...
Click to collapse
They're all found here: http://downloads.codefi.re/autoprime/LG/LG_G6/H870DS
I have no issues with 5 GHz networks.
On the HK firmware I had double 4G icons when not connected to WiFi. One on it's own and one inside the signal bar icon. Not a deal breaker, but annoying. On CIS OPEN I'm getting an LTE icon next to the signal bars, and nothing else. The reception itself is also better now.
---------- Post added at 08:59 PM ---------- Previous post was at 08:12 PM ----------
Pierre118 said:
On Reddit there is a topic about a july CIS firmware update. Do you already have it?
Click to expand...
Click to collapse
No, no one does as of yet, as far as I'm concerned. We've yet to get cold, hard evidence that there's an anctual July update rolling out for the H870DS.

Pierre118 said:
5GHz wifi will be enabled after you put in a simcard. I don't know why but that is the way to activate 5GHz.
Click to expand...
Click to collapse
Incredible ! Indeed, I put my SIM card in it, at first nothing came up, but when I disabled and enabled the Wifi, then it found my 5GHz network...
After shutting down the phone, getting out the SIM, once rebooted it still recognize and connects to the 5GHz Wifi network, so really putting the SIM does activate something (some things) regarding Wifi (and who knows else)
MrDeacon said:
On the HK firmware I had double 4G icons when not connected to WiFi. One on it's own and one inside the signal bar icon. Not a deal breaker, but annoying. On CIS OPEN I'm getting an LTE icon next to the signal bars, and nothing else. The reception itself is also better now.
Click to expand...
Click to collapse
Ok I see what you mean. Actually I do like the double network id, this way I always know the kind of cellular network you are connected to.
So I'll leave it on the HK rom, as this is a present for a birthday on august 1, I better not break it . As it is I can't see any differences regarding cell reception or performance with my Samsung. It's really a nice phone (I bought a H870DS only because it is the only way to get a blue one with a black front)

MrDeacon said:
Did you use Uppercut? I did, and flashing CIS OPEN went flawlessly. Got less bloat, correctly shown ststusbar icons and better battery life. Living in Sweden.
Click to expand...
Click to collapse
Is your cell notwork reception strength get stronger?
Currently i have 10c seg firmware, my network strengths is suck inside my house though network problem is actually there.
Today i compare with Xiaomi mi3.... got 10-15dbm higher signal.Which makes me surprise 4years old phone get more cell reception.

sagor1 said:
Is your cell notwork reception strength get stronger?
Currently i have 10c seg firmware, my network strengths is suck inside my house though network problem is actually there.
Today i compare with Xiaomi mi3.... got 10-15dbm higher signal.Which makes me surprise 4years old phone get more cell reception.
Click to expand...
Click to collapse
I didn't compare dBm before and after flashing the 10d. It's the overall perception when actually using the phone that tells me that the reception has improved.

Hi, for those who are looking for the july update (CIS) you can find it on lg-firmwares.com/lg-h870ds-firmwares
- H870DS10f_00_OPEN_CIS_DS_OP_0718.kdz
(I've not tried to install it yet)

jesusdoit said:
Hi, for those who are looking for the july update (CIS) you can find it on lg-firmwares.com/lg-h870ds-firmwares
- H870DS10f_00_OPEN_CIS_DS_OP_0718.kdz
(I've not tried to install it yet)
Click to expand...
Click to collapse
I did. It wipes your phone, so make sure you have a fresh backup.

I have latest cis firmware over Asian Sea10c...but I can't receive 4g+..only 4g...someone encounter this?

So I've got the TWN model with the latest update where Volte is supposed to be supported however there is nothing in the settings or elsewhere. D/L and install latest CIS and have major issues with reception on SIM 2 (I think it was 2g only) and no volte settings within the menus and it's supposed to have them. Reinstall again from clean boot and still no volte and reception issues. Has anyone got the HK version running on a TWN model with volte etc? Or am I doing something wrong in the process of cross flashing?

Now I have tried cross flashing CIS, HK and SIN and the results are not good. I keep getting the update 10f, 10e with global-com firmware. It does update however each one has the issue of the second sim going to 2G and not 3G and no Volte settings in any of them. I then go back to TWN and its all okay apart from not having the Volte settings. Yes the upgrade is with a clean boot and through LGUP. The strange thing I don't get is the Refurb option but as I led to believe as long as you reset it should be okay to select Upgrade. It appears that the region settings cannot be or altered through this process. One thing I did notice with Global-Com is that there are settings for Mirrorlink so you use LG Drive if you wish however this is not as important as the twin sim and volte for me. Any one any other suggestions on this topic?

Phone Radio NOT working/turned on with converted Axon A2017 to Axon A2017U

Hello, first of all I want to let you know that I am not an expert but have so far been able to convert my Axon A2017 to the US A2017U version.
Big thanks [email protected] for supplying the necessary files.
I have:
-unlocked the bootloader
-rooted the phone
-flashed successfully B20
However, When I upgraded to B29, I lost TWRP and the cell radio of the phone is non-responsive. It won't even turn on. Bootloader is sill unlocked. I made phone calls on my T-mobile network when it was the origional A2017 B8 version. So I believe the bandwidths are compatible.
I have already done the following troubleshooting: (note: WIFI currently works just fine)
-My network is with T-Mobile, and I have been using a different axon A2017U for over a year with no problems.
-When I type *#*#4636#*#* and got to phone Info says, GSM Service: Radio Off, and the Turn on Radio button does nothing.
- I have tried working with every setting in this menu with no luck.
-When I insert my SIM card that is working on my current axon 7 into the converted A2017U, it is able to pick up T-Mobile network u.s. LTE, (fast.tmobile.com) and T-Mobile US (tmus). However, there are no bars because the radio is not turned on.
-When I try to search for new networks an error message saying, "network search cannot proceed when the data service is enabled disabled it?" So I disable it and nothing happens except for an error message saying "error while searching for Networks".
-In network mode I have switched to every option available, LTE/wcdma/GSM, wcdma/GSM, and GSM only with no result.
I am currently running Android version 6.0.1 on build B-29. Any help to get the radio up and running to receive phone calls would be greatly appreciated. Everything else is working except for the phone radio to send and receive phone calls.
Thanks for any Help.

Do you still have your IMEI or did the partition get corrupted?

ultramag69 said:
Do you still have your IMEI or did the partition get corrupted?
Click to expand...
Click to collapse
I check the number with several online checks, as well as T-Mobile, and they are unable to bring up any information about the number. I imagine it got blocked or corrupted during the upgrades.
What do I do to unblock it or make it functional again?

Go to settings>About>Status and check your IMEI number. If it's blank its noyt gonna work on any network...
You might be able to restore it if you have a backup of it - no-one will give you their backup as you then have their phone - or as a last resort, you might need to restore to the stock Chinese Rom again and see if that fixes it...
Good luck, I'm off to bed after a long backshift...

ultramag69 said:
Go to settings>About>Status and check your IMEI number. If it's blank its noyt gonna work on any network...
You might be able to restore it if you have a backup of it - no-one will give you their backup as you then have their phone - or as a last resort, you might need to restore to the stock Chinese Rom again and see if that fixes it...
Good luck, I'm off to bed after a long backshift...
Click to expand...
Click to collapse
Thankfully the numbers are there on both IMEI slot 1 and IMEI Slot 2. Thanks for your help. I hope to hear from you after a good night of rest.

Flash the correct modem/bootstack for your device.

Shipcaptian said:
Thankfully the numbers are there on both IMEI slot 1 and IMEI Slot 2. Thanks for your help. I hope to hear from you after a good night of rest.
Click to expand...
Click to collapse
Just go to the LineageOS thread and download the A2017 modem file, then just flash it

Choose an username... said:
Just go to the LineageOS thread and download the A2017 modem file, then just flash it
Click to expand...
Click to collapse
Sounds Good
Will I need TWRP to flash it or can is just use the Reg. recovery system?

Shipcaptian said:
Sounds Good
Will I need TWRP to flash it or can is just use the Reg. recovery system?
Click to expand...
Click to collapse
You need TWRP. Just install it with axon7tool via edl if you don't have fastboot, or try axon7toolkit

Choose an username... said:
You need TWRP. Just install it with axon7tool via edl if you don't have fastboot, or try axon7toolkit
Click to expand...
Click to collapse
Here's the latest update:
I loaded TWRP onto the phone and installed the file A2017U_N_Modem.zip. (Several Times)
nothing has changed. The radio is still turned off and no signal is being picked up from my carrier T-Mobile.
While loading it says: Loading A2017U_N_Modem for nougat system. I am not running nougat and I cannot find any other modem to download. Will that make a difference?
Any other suggestions are welcome?

Shipcaptian said:
Here's the latest update:
I loaded TWRP onto the phone and installed the file A2017U_N_Modem.zip. (Several Times)
nothing has changed. The radio is still turned off and no signal is being picked up from my carrier T-Mobile.
While loading it says: Loading A2017U_N_Modem for nougat system. I am not running nougat and I cannot find any other modem to download. Will that make a difference?
Any other suggestions are welcome?
Click to expand...
Click to collapse
You need to flash the A2017 modem, not the A2017U one
Here: https://www.androidfilehost.com/?fid=457095661767137840

bkores said:
You need to flash the A2017 modem, not the A2017U one
Here: https://www.androidfilehost.com/?fid=457095661767137840
Click to expand...
Click to collapse
Okay it works! I've got signal but when I try to make a phone call and my other phone picks up I can't hear or say anything. Any idea what's happening? I have tried refreshing the signal with no luck.

Hey man, I'm having the same problem with my Axon 7, brand new A2017U. Turned it on for the first time and I haven't had an ounce of radio on. Same things you've tried I've tried and it refuses to work. Mine is not rooted and I don't want to. I've tried downgrading my update and to no avail. Factory reset etc. I've contacted ZTE and they said they have forwarded my details and my phone details, storage size, color etc. To the necessary representatives. I think I'm gonna be sent a replacement, but just wanted to let you know your not alone.

Lg v20 us996 no network and radio button off

I have lg v20 us996 and after the latest ota update there is no network(even though sim card is detected by the phone) and the radio button turned off automatically and there is no way to turn it on again.
I have tried all the dial codes to turn it on in phone info app but everytime I get a message saying that "This application doesn't work on this phone"
I have also tried factory reset but it didn't solve the issue .when I contacted lg usa they asked me to send my phone to us which I can't do because I live abroad.
Is there any way other than dial codes to turn my radio button on or is there any other way to get network back on my phone.
Note:I dont want to root my phone because I have bricked my previous phone trying to flash a new rom into that.
I have also used cell radio shut off app in play store.It just crashes whenever I use it.
So please suggest any other way if possible.

Yup, this happened to me as well and several others after the last update...and my phone is still under warranty but i can't send it to the US same as your case. It is really frustrating that an official update would brick your phone. There is a local service LG center in my country but they can't do anything. In my case in can't even unlock the bootloader for whatever reason.

saiteja444 said:
I have lg v20 us996 and after the latest ota update there is no network(even though sim card is detected by the phone) and the radio button turned off automatically and there is no way to turn it on again.
I have tried all the dial codes to turn it on in phone info app but everytime I get a message saying that "This application doesn't work on this phone"
I have also tried factory reset but it didn't solve the issue .when I contacted lg usa they asked me to send my phone to us which I can't do because I live abroad.
Is there any way other than dial codes to turn my radio button on or is there any other way to get network back on my phone.
Note:I dont want to root my phone because I have bricked my previous phone trying to flash a new rom into that.
I have also used cell radio shut off app in play store.It just crashes whenever I use it.
So please suggest any other way if possible.
Click to expand...
Click to collapse
You can tried this
https://forum.xda-developers.com/v20/how-to/guide-us996-service-radio-off-ota-kdz-t3727126?nocache=1
I have the same issue after the lastest OTA update. You can fix this by flash the modem file. Since i cant send my V20 to US so i have to fix it myself. all you need is unlock bootloader, install TWRP, update to the lastest OTA (optional) and flash the modem.img file.

How to unlock phone's bootloader.And for this is it required to root my phone

same here i worked abroad and i cant use my phone due to no network service same radio off. hope someone can help
:crying:

ttnduy said:
You can tried this
https://forum.xda-developers.com/v20/how-to/guide-us996-service-radio-off-ota-kdz-t3727126?nocache=1
I have the same issue after the lastest OTA update. You can fix this by flash the modem file. Since i cant send my V20 to US so i have to fix it myself. all you need is unlock bootloader, install TWRP, update to the lastest OTA (optional) and flash the modem.img file.
Click to expand...
Click to collapse
is this also applicable to H910 AT&T variant. same issues here

saiteja444 said:
How to unlock phone's bootloader.And for this is it required to root my phone
Click to expand...
Click to collapse
You can try the dirtysanta method. Unlock bootloader via LG will take about 3 days.

AceGed said:
is this also applicable to H910 AT&T variant. same issues here
Click to expand...
Click to collapse
Idk i only know how to fixed this on us996. But you can try, i think you may need the modem file of AT&T variant.

You must have TWRP and flash the universal modem.img
https://androidfilehost.com/?fid=962021903579496199

hitting what seems to be the same issue, did you ever get it resolved? thanks

Basabeband corrupted

Hi guys, i have a xt1626.
And for some reason last night I lost my network signal and SIM 2 status.
Well... I made a factory reset and flashed lastest stock rom (december 2017).
But it still not work.
SIM 1 is working IMEI is correct. but no signal. Only showing "No Service". SIM 2 is missing.
When I see baseband it shows lastest baseband but not with "DSTV RET_BR..." on final. It show "DFLT_FSG".
I flash modem, install others rom (custom) but nothing works.
There is a chance that make it working again?

Are you sure you have flashed the correct version of stock rom.??? This happened to me only when I flashed the ROM for another variant!

I flash this one: https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138
After some google search I found the problem.
The mobile radio is not turning on. Like if the phone still in airplane mode.
i don't know what i have to do. No looks like HW problem cause sim card is recognized
There is a place wich i found specific firmware for xt1626?
firmware.center only have universal firmware.

That link doesn't have the firmware for 1626.. there was a file factory link that had all the variants stock ROMs.. So if you find any nougat version you can flash that barring bootloader and gpt.bin as downgrading them will result in a brick! And then take OTA!