[Q] US996 on Verizon issues - LG V20 Questions & Answers

I have several issues with my US996 on Verizon, running LineageOS 14.1. (I'm not asking in the LOS threads because I figure more people here know the details of this device)
The main problem is I can't get SMS to work unless I set the preferred network type to CDMA or CDMA/EVDO only. I have been using the "VZWINTERNET" APN.
Any time I set an option that includes LTE (including the "Global" setting), SMS/MMS stops working.
Also, the signal indicator works strangely, oftentimes when I have strong signal the signal indicator shows 0 bars.
Lastly, many of the fields in Settings/phone info/SIM Status are blank, eg phone number, signal strength and service state. (Perhaps this is a CDMA/Verizon idiosyncracy since the SIM is not the primary auth to the legacy CDMA network?)
Do I need to flash the VS995 radio to this device to address these things? Is that even feasible? What about what Verizon calls "Advanced Calling" options? Ideally I would love to have VoLTE and WiFi calling as well.
Thanks.

Exabyter said:
I have several issues with my US996 on Verizon, running LineageOS 14.1. (I'm not asking in the LOS threads because I figure more people here know the details of this device)
The main problem is I can't get SMS to work unless I set the preferred network type to CDMA or CDMA/EVDO only. I have been using the "VZWINTERNET" APN.
Any time I set an option that includes LTE (including the "Global" setting), SMS/MMS stops working.
Also, the signal indicator works strangely, oftentimes when I have strong signal the signal indicator shows 0 bars.
Lastly, many of the fields in Settings/phone info/SIM Status are blank, eg phone number, signal strength and service state. (Perhaps this is a CDMA/Verizon idiosyncracy since the SIM is not the primary auth to the legacy CDMA network?)
Do I need to flash the VS995 radio to this device to address these things? Is that even feasible? What about what Verizon calls "Advanced Calling" options? Ideally I would love to have VoLTE and WiFi calling as well.
Thanks.
Click to expand...
Click to collapse
If youre device is abr0 you can use the patched dll version of lg up. https://forum.xda-developers.com/attachment.php?attachmentid=4233875&d=1502007613 to flash vs955 firmware. I have found that the this version VS9951BA01 is the one has fastboot mode and can get to recovery if you want to use dirty santa on it. or if you get to the you have 9 attempts of 10 to enter the passcode. you will then need to factor reset to get the data formated. But this link has the full instructions. https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222

Drewc4xx said:
If youre device is abr0 you can use the patched dll version of lg up. https://forum.xda-developers.com/attachment.php?attachmentid=4233875&d=1502007613 to flash vs955 firmware. I have found that the this version VS9951BA01 is the one has fastboot mode and can get to recovery if you want to use dirty santa on it. or if you get to the you have 9 attempts of 10 to enter the passcode. you will then need to factor reset to get the data formated. But this link has the full instructions. https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
Click to expand...
Click to collapse
Thanks for that tip, I will read up on it a bit later.
The main reason I got a US996 rather than a VS995 is the lack of an officially unlockable bootloader on the VZW variant and having to use an exploit to unlock/root it which only works on old firmware leading me into a potential trap if the device ends up in a state I can't either unlock/root or return to stock from.
I already unlocked the US996 bootloader - will that get reset if I flash a stock kdz onto it?
I tried using LGup shortly after I got the phone but I was having problems getting it to work on my Win7 workstation, perhaps I had the wrong version..

Related

Sprint users?

Are there any fellow Sprint users on the MXPE? If you are, are you running an AOSP ROM? Have you ever gotten data and voice roaming working on AOSP? If so, how'd you do it?
Yes, I've had data working on the orion rom (which I believe is cm13 based). Check your apn's, the one containing n5......something.or.other is the appropriate one IIRC.
Mobile networks should be cdma/lte.
Network data and voice is just fine for me. It's all roaming that's messed up. Will check apn's next time I flash.
gpz1100 said:
Yes, I've had data working on the orion rom (which I believe is cm13 based). Check your apn's, the one containing n5......something.or.other is the appropriate one IIRC.
Mobile networks should be cdma/lte.
Click to expand...
Click to collapse
I must be blind, but where do we find the APN settings on the phone?
^^It's a byproduct of "stock" software. APN's access is readily available in aosp/non stock roms.
The function is still there in the stock rom, but requires an extra step or two to get at it.
If you use a third party launcher such as nova, you can add it under activities. Long press a blank area on the home screen, select widgets, then swipe to the left on the top most row, select activities. Scroll down and open the settings entry then look for APN.
Or, use this - https://play.google.com/store/apps/details?id=de.szalkowski.activitylauncher&hl=en
I'm on Sprint with STOCK/LOCKED/UNROOTED and this phone flat out refuses to roam all over the US. Specifically what APNs should be in the STOCK list (I used Nova to access APNs) and they look to be there.
^^I don't think the apn has anything to do with roaming. Have you checked your roaming options under the main android settings?
Are you on a plan that provides roaming? Roaming properly enabled on your account? Updated the prl?
Kamkor82 said:
I'm on Sprint with STOCK/LOCKED/UNROOTED and this phone flat out refuses to roam all over the US. Specifically what APNs should be in the STOCK list (I used Nova to access APNs) and they look to be there.
Click to expand...
Click to collapse
I drive semi truck, my usual run is Wisconsin to Washington state and back. My phone, for the most part, will switch into roaming using TruPure. Two runs ago my phone wouldn't roam at all. I tried toggling data, updating PRL and the device config, eventually doing a clean flash, and still had no roaming. Eventually I ran the stock restore tool, flashed the modem separately, and did *#*#72786#*#* in the dialer. I'm back to roaming on a stock based ROM again. I haven't tried an AOSP rom since posting my question a few days ago.
misfit0313 said:
I drive semi truck, my usual run is Wisconsin to Washington state and back. My phone, for the most part, will switch into roaming using TruPure. Two runs ago my phone wouldn't roam at all. I tried toggling data, updating PRL and the device config, eventually doing a clean flash, and still had no roaming. Eventually I ran the stock restore tool, flashed the modem separately, and did *#*#72786#*#* in the dialer. I'm back to roaming on a stock based ROM again. I haven't tried an AOSP rom since posting my question a few days ago.
Click to expand...
Click to collapse
Edit: I also used *#*#rtn#*#*
^^Did you post about this in the rom thread? I'd guess one of the removed services is somehow affecting roaming.
I wanted to do a bit more trouble shooting first. Before my next to Washington, my plan was to flash AOSP and see if roaming was working again. I forgot to note, after confirming roaming was working on the stock ROM again, TruPure was flashed and was roaming properly too. My thoughts were that somehow Sprint provisioning got screwed up or a flash somehow messed up the modem.
When you flashed truepure again, what type of reset did you do (if any)?
Sprint's provisioning system is poop. Their system is a 2 part authentication. Your voice/text is tied to the device meid (not imei), data is tied to the sim card. This seems quite @ssbackward to me, considering verizon, tmo, att all associated your number with the sim card. While the device still transmits its imei during registration, no user intervention is needed when switching device. With sprint you need to log into the account and update the device too.
It seems each time you do a clean flash (wipe userdata), the software attempt to perform the 'handsfree' activation (or its equivalent on the moto x). If you perform a factory reset from within android, a number of carrier parameters get erased. If you a factory reset from twrp, they get retained.
I'm also on sprint but through ringplus, so no roaming included.
After running the http://forum.xda-developers.com/showthread.php?t=3199905
[WINDOWS TOOL][5.1.1]Moto X Style/Pure Edition "Restore-To-Stock-Tool" , flashing the modem separately, and doing the dialer codes, all was good with roaming. Roaming again worked with TruPure. Nothing special was needed. After restoring stock and reflashing TWRP, I just flashed TruPure like any other rom. No special steps were needed.
gpz1100 said:
^^I don't think the apn has anything to do with roaming. Have you checked your roaming options under the main android settings?
Are you on a plan that provides roaming? Roaming properly enabled on your account? Updated the prl?
Click to expand...
Click to collapse
Sorry for the long delay, been all over the place.
Yes plan provides roaming, and is enabled. PRL updated. I verified with Sprint customer care that the account is provisioned with no errors so I should be good to go on the Sprint side.
Im going to try what Misfit0313 did, restore to stock and flash modem. I'm assuming the return to stock takes it back to Lollipop so I'll get the MM OTA. Are you able to flash a modem on MM? Maybe the Modem side got corrupted somehow on my stock phone when it upgraded to MM right out of the box.
Buried in the Restore to Stock tool thread, there are directions to flash the modem separately via ADB. For some reason, the tool broke WiFi, necessitating the need for the modem reflash.
I just took the OTA to come from LP to MM
http://forum.xda-developers.com/showthread.php?t=2541924.
I flashed this fix on a clean install and AOSP roaming is working.
So roaming is controlled by the apn?? Interesting. Didn't realize that was the case.
Are you the same misfit on the freenode network/evo4g lte days?
gpz1100 said:
So roaming is controlled by the apn?? Interesting. Didn't realize that was the case.
Are you the same misfit on the freenode network/evo4g lte days?
Click to expand...
Click to collapse
Dude, yep its me. I don't stop in there too much anymore. Always bs going on in my life. Hobbit problems.
I tried to change APN settings as you suggested in AICP rom, but I kept getting a message like 'user doesn't have sufficient privileges to change settings'. That's why i gave that old ass fix a try. Reported in AICP thread. Went to south TX this week and I have no issues to report with voice or data roaming on AICP.
Still have the Infinity or did you move onto something badder?
misfit0313 said:
http://forum.xda-developers.com/showthread.php?t=2541924.
I flashed this fix on a clean install and AOSP roaming is working.
Click to expand...
Click to collapse
i can't set APNs or even make calls/texts on AOSP ROMs like Dirty Unicorn and PureNexis with Sprint...Flashing this zip fixed that for you?
Edit: Meh...just tried clean flashing PureNexis with the sprint.zip fix and still cant make calls or set APN's
My question: Is roaming working on stock based roms for you?
Stock roaming wasn't working for me, and Sprint insisted it wasn't at their end. After doing all the steps I mentioned previously, stock roaming finally was a go. I still had to flash the sprint.zip on a clean install to get AOSP roaming working. Without roaming on stock, there's no way roaming will work on any other ROM.

Flashed Verizon RUU, cellular radios, GPS, and camera now broken

Hey all,
So, a little backstory: I got this HTC 10 from Sprint not too long ago, and little did I know that I would be stuck with Sprint unless I reflash the phone firmware. (after research, asking HTC and Sprint, I received misinformation from reps stating that the phone would work on Verizon with just a carrier unlock issued over the air). Moral of the story: don't rely on customer service :silly:.
Fast forward to now, and I have rooted (temporarily to run Sunshine), S-OFF'd (using Sunshine), changed the CID (for Verizon), and flashed the newest Verizon RUU that developer Dottat kindly posted here.
That worked, full LTE, but then whenever the camera or GPS were accessed by any application, the phone would freeze with a black screen (though it seemed something was still running in the background, as notification sounds would still play, and I could exit by pressing the home button and waiting about a minute). After this, I tried flashing the Viper ROM just for kicks, but then the cellular radios only functioned with 3G coverage (no LTE in a coverage area), and GPS was still broken (the camera issue was fixed with this flash for some reason).
Unfortunately (or maybe not), I am pretty sure /system has been wiped multiple times. I also ran
Code:
htc_fastboot erase modemst1
htc_fastboot erase modemst2
after each install of a new ROM, then performed a factory reset from recovery (just a factory reset, nothing more).
Now I went ahead and used an official ROM from HTC's website in an attempt just to get full functionality working on any carrier. I flashed the USA unlocked variant (and changed the CID to BS_US001. MID is still 2PS650000), but now I am experiencing more missing functionality. The camera and GPS are still missing, and now the SIM card is not detected (when entering the access point names dialog, a message pops up stating that there is no SIM, or SIM error when I am using an activated AT&T SIM). When I enter the test menu (*#*#4636#*#*) and select any option for network mode other than what is default (LTE/CDMA), the new option won't 'stick' (it returns to default after a few seconds).
This sounds to me like there is stale firmware on the device from a previous flash, or that the firmware for these core peripherals is corrupt. Is there a way I can get these devices working again? Or am I now stuck with a bricked device ? I do still have a backup I took of what was installed stock by Sprint (all except for /data...but I don't need that partition, right?)
EDIT: Mods, I am terribly sorry! I meant to post this in HTC 10 Q&A. I don't see a way to delete a thread, so hopefully we can move it.
MrFarquad said:
Hey all,
So, a little backstory: I got this HTC 10 from Sprint not too long ago, and little did I know that I would be stuck with Sprint unless I reflash the phone firmware. (after research, asking HTC and Sprint, I received misinformation from reps stating that the phone would work on Verizon with just a carrier unlock issued over the air). Moral of the story: don't rely on customer service :silly:.
Fast forward to now, and I have rooted (temporarily to run Sunshine), S-OFF'd (using Sunshine), changed the CID (for Verizon), and flashed the newest Verizon RUU that developer Dottat kindly posted here.
That worked, full LTE, but then whenever the camera or GPS were accessed by any application, the phone would freeze with a black screen (though it seemed something was still running in the background, as notification sounds would still play, and I could exit by pressing the home button and waiting about a minute). After this, I tried flashing the Viper ROM just for kicks, but then the cellular radios only functioned with 3G coverage (no LTE in a coverage area), and GPS was still broken (the camera issue was fixed with this flash for some reason).
Unfortunately (or maybe not), I am pretty sure /system has been wiped multiple times. I also ran
Code:
htc_fastboot erase modemst1
htc_fastboot erase modemst2
after each install of a new ROM, then performed a factory reset from recovery (just a factory reset, nothing more).
Now I went ahead and used an official ROM from HTC's website in an attempt just to get full functionality working on any carrier. I flashed the USA unlocked variant (and changed the CID to BS_US001. MID is still 2PS650000), but now I am experiencing more missing functionality. The camera and GPS are still missing, and now the SIM card is not detected (when entering the access point names dialog, a message pops up stating that there is no SIM, or SIM error when I am using an activated AT&T SIM). When I enter the test menu (*#*#4636#*#*) and select any option for network mode other than what is default (LTE/CDMA), the new option won't 'stick' (it returns to default after a few seconds).
This sounds to me like there is stale firmware on the device from a previous flash, or that the firmware for these core peripherals is corrupt. Is there a way I can get these devices working again? Or am I now stuck with a bricked device ? I do still have a backup I took of what was installed stock by Sprint (all except for /data...but I don't need that partition, right?)
EDIT: Mods, I am terribly sorry! I meant to post this in HTC 10 Q&A. I don't see a way to delete a thread, so hopefully we can move it.
Click to expand...
Click to collapse
A MOD should move it soon.
I am not the best here, but hopefully can be of some help.
I would just superCID, save a step for flashing RUU's.
So, when you flash the Verizon RUU, does camera work?
(if you RUU and only have 3g, wipe the modems to get 4g back)
If your trying to use the phone on Verizon I would do the following:
1) Change your CID to Super, 11111111
2) Flash the US Unlocked RUU, http://www.htc.com/us/support/rom-downloads.html#unlocked
3) After it fully boots, reboot into the bootloader & flash the Verizon radio, http://forum.xda-developers.com/verizon-htc-10/how-to/vzw-how-to-unlocked-model-vzw-t3376743
4) Make sure the Preferred Network is set to Global, Settings>Mobile data>Preferred Network
5) Get to the secret menu *#*#4636#*#*, and set the preferred network type to "CDMA/EvDO/GSM/WCDMA/LTE Auto"
I use a Verizon model with the US Unlocked firmware. As far as custom ROMs, some work with Verizon's network and some don't. I'm sure theres a workaround but I've stuck with the US Unlocked firmware, and just use Xposed for any tweaks/mods.
If your trying to use it on AT&T and the radio from the US unlocked RUU should work.
andybones said:
A MOD should move it soon.
I am not the best here, but hopefully can be of some help.
I would just superCID, save a step for flashing RUU's.
So, when you flash the Verizon RUU, does camera work?
(if you RUU and only have 3g, wipe the modems to get 4g back)
Click to expand...
Click to collapse
Used to be a guy around here we could trust to help.
Sent from my HTC6545LVW using Tapatalk

[Help Pls] LG V20 VS995 after Root No GSM Signal - Service Disabled - No Service

Hello All,
For the past 3 weeks, I was reading threads and trying to solve the issue, but no luck. So please help me.
My problem/story started when I have ordered an LG V20 US996 from china, everything was working. I wanted to root it so I have tried this https://forum.xda-developers.com/v20/how-to/v20-h915us996-dirtyelf-bootloader-t3568013 and it worked, but I have lost the GSM Signal
I have tried to fix the issue by going to *#*#4636#*#* -> Phone information, but the US996 rom can’t access this menu. So I have tied to flash LineageOS for US996 it has started but the touch didn’t work so I have used an OTG Mouse, I went to *#*#4636#*#* but no result
After a long search on the internet I have come on a thread that suggest to see the original model of the phone (because as they said in china they may change the phone version), so I have checked the motherboard and I have found out that my phone is VS995.
But when I enter the LGUP or UPPERCUT it says that it is US996, I only can flash US996 KDZ ROM. However, after I went to ##PROGRAM996 I hit there reset (I don’t know exactly where) the phone restarted and now it shows in LGUP that it is VS995
So I have flashed using UPPERCUT VS99512A_06_1114_ARB00.kdz and no result still no GSM Signal then I have rooted the phone using https://forum.xda-developers.com/v20/development/ls997vs995h910-dirtysanta-bootloader-t3519410
I have flashed back the original EFS, no result still no GSM Signal
So I have Installed LineageOS for VS995 in order to access *#*#4636#*#* (because I couldn’t access any hidden menu form the VS995 original dialer) after Installing LineageOS the touch screen didn’t work I have an OTG Mouse, I went to *#*#4636#*#* -> Phone information, I Turn on the Radio but the still no GSM Signal
I have tried flushing multiple kernels and ROMs but no luck
I even tired this https://forum.xda-developers.com/v20/how-to/manual-program-sprint-ls997-v20-t3557676 but no luck, I couldn’t contact Verizon for the MSID number because I live in Lebanon
P.S: I have an IMEI number
I am going crazy here
Please help me
i have also tried this https://forum.xda-developers.com/v2...-ls997-v20-t3557676/post71315675#post71315675
and didn't work
i have no signal problem too, after doing firmware update using wifi, now my VS995 won't register to GSM/LTE network and it says Sim Card is not from Verizon...
how to activate this phone? i'm not in USA as your problem i cannot activate the VS995 using Verizon services,..
what should we do? to activate manually without the Verizon simcards??
Mine was showing no signal until I made a call, then it worked. I'm in the US, though.
VS995
LineageOS 14.1
Verizon
Habe you tried changing to Global. I am in the UK and have a vs995 and i am getting the not a verizon sim (which you can ignore). My problem is that using my contract carrier (EE) i cannot access 4G only 3G GSM but if i use a different carrier sim (O2) 4G/LTE is working.
hey..
can anyone pls share the qcn for vs995..?

LG H910PR on AT&T LTE?

Hi guys:
i have looked on google etc. but can seem to find a answer. I bought a LG V20 H910PR (from claro unlocked) im using it on AT&T everything is running super fine but can't get 4G LTE only HSPA+. Is that from the phone that does not have all the bands for ATT or is there is something I need to setup?
Thanks,
Did you change your APN?
-- Brian
runningnak3d said:
Did you change your APN?
-- Brian
Click to expand...
Click to collapse
Yes the phone took the APN automatically
runningnak3d said:
Did you change your APN?
-- Brian
Click to expand...
Click to collapse
It has the NXTGENPHONE one I chaged it also to phone but still HSPA+
I will look and see if that model uses the same RSA key. If it does, then you can try flashing the entire AT&T firmware.
runningnak3d said:
I will look and see if that model uses the same RSA key. If it does, then you can try flashing the entire AT&T firmware.
Click to expand...
Click to collapse
Thanks
Your v20 supports most of att lte bands except band 17, all other should allow you to get lte with att. are you sure the apn is correct, and have you tried forcing the phone into lte mode?, use *#*#4636#*#*, if this menu does not work, download shurcutmaker from the playstore and search for network mode, that should allow you to open the network swtching menu.
runningnak3d said:
I will look and see if that model uses the same RSA key. If it does, then you can try flashing the entire AT&T firmware.
Click to expand...
Click to collapse
Hi,
Were you able to find if the firmware can be installed?
siulmagic said:
Your v20 supports most of att lte bands except band 17, all other should allow you to get lte with att. are you sure the apn is correct, and have you tried forcing the phone into lte mode?, use *#*#4636#*#*, if this menu does not work, download shurcutmaker from the playstore and search for network mode, that should allow you to open the network swtching menu.
Click to expand...
Click to collapse
Hi, I also have the same problem. The above mentioned code doesn't work, neither does the software you've mentioned. A bit more help will be appreciated.
Have the same problem on other operator. However if I reset the network settings and don't go into the network options it connects to 4G. If I just open the network settings, without touching anything, it locks to 3G/H+. There's no 4G option in network settings as mentioned. My APN is set up correctly. I did a bit of research and found these threads on Vietnamese forum, google translate was not helpful.
lgviet.com/forum/threads/mat-song-4g-ban-nao-ho-tro-minh-voi.66812/
lgviet.com/forum/threads/up-nhàm-rom-khác-khong-4g.67637/
lgviet.com/forum/threads/sua-loi-mat-3g-4g-lg-v20-h910pr.69517/
If you can't open the links, paste them in google and use google translate option. Any help would be appreciated.
vzeljkov said:
Have the same problem on other operator. However if I reset the network settings and don't go into the network options it connects to 4G. If I just open the network settings, without touching anything, it locks to 3G/H+. There's no 4G option in network settings as mentioned. My APN is set up correctly. I did a bit of research and found these threads on Vietnamese forum, google translate was not helpful.
lgviet.com/forum/threads/mat-song-4g-ban-nao-ho-tro-minh-voi.66812/
lgviet.com/forum/threads/up-nhàm-rom-khác-khong-4g.67637/
lgviet.com/forum/threads/sua-loi-mat-3g-4g-lg-v20-h910pr.69517/
If you can't open the links, paste them in google and use google translate option. Any help would be appreciated.
Click to expand...
Click to collapse
the reset method working for me, but this behaviour is weird, thanks though, i really down last week because of this, got scammed h910 version lol
Please see my write-up here: https://forum.xda-developers.com/v20/how-to/hardware-modem-modem-firmware-ril-t3744860
-- Brian
I running to other issue, when im on data and then there's call coming, after that my phone locked to 2G, i dont know how many time i must reset network....
runningnak3d said:
Please see my write-up here: https://forum.xda-developers.com/v20/how-to/hardware-modem-modem-firmware-ril-t3744860
-- Brian
Click to expand...
Click to collapse
Is it safe to root/flash ROMs onto H910PR (it has V10j-CLR-PR software) using the H910 methods mentioned here?
Dhikavolution said:
I running to other issue, when im on data and then there's call coming, after that my phone locked to 2G, i dont know how many time i must reset network....
Click to expand...
Click to collapse
Unfortunately I have the same issue, really disappointing. I'll try messaging the seller on aliexpress or I'll try to get in touch with the service on that Vietnamese forum I mentioned earlier. It is obviously software-side error so I am hoping this can be solved.
Also, you can go to service menu by typing *#546368#*910#.
Edit: After a bit of research I came across this thread: https://forum.xda-developers.com/lg-g3/help/lte-option-network-selection-t2827499
It is for LG G3 but the problem is the same. Basically Field test-Modem Settings-RAT selection - GSM/CDMA/LTE is a temporary fix. Other methods require root.
In the Field Test - PDP Setting - APN setting I have "LTE attach profile" which is hidden in the normal Network Settings menu. Don't know will modifying this to match my carrier's APN will change anything.
If you are still ARB 0, then you can use the H910 method. If you are ARB 1 or greater you will have to wait for the firehose method.
vzeljkov said:
Have the same problem on other operator. However if I reset the network settings and don't go into the network options it connects to 4G. If I just open the network settings, without touching anything, it locks to 3G/H+. There's no 4G option in network settings as mentioned. My APN is set up correctly. I did a bit of research and found these threads on Vietnamese forum, google translate was not helpful.
lgviet.com/forum/threads/mat-song-4g-ban-nao-ho-tro-minh-voi.66812/
lgviet.com/forum/threads/up-nhàm-rom-khác-khong-4g.67637/
lgviet.com/forum/threads/sua-loi-mat-3g-4g-lg-v20-h910pr.69517/
Hello, I am new to the site, something similar happens to me, I have an LG V20 H910, with the AT&T system it allowed me to select the 4G mode in the mobile networks option, now I changed the system for the company CLARO Puerto Rico And I don't get the 4G option in the settings, I only get 2G and 3G. It does not let me enter the hidden menu either, it tells me that it does not work on this device, I can not solve with the combination * # 546368 # * 910 #, I select the option only LTE, the coverage goes away and it comes back in 3G. Please, if someone solved this problem can you help me?
Click to expand...
Click to collapse
H910PR - How to root & install any ROM! (all lineage ROMs verified)
Hey guys! :D I've been struggling over the weekend to get my H910PR rooted w/ a custom ROM installed. I kept getting kernel panics saying 'modem crashed' but was finally able to figure it out. Step 1 - Root / TWRP I followed these steps...
forum.xda-developers.com

phone says there's LTE service, but disconnects when making a call and cannot receive/send texts

I installed the latest lineageOS 19 version, rooted my phone then ran into this problem where the phone says i have service, but when i place a call it wont fully make the call. Then my mobile data will X out and i get pop up error saying mobile service is unavailable. I then tried lineageOS 18.1 and arrowOS and same problem persists.
formating between installs obviously.
I have looked at every option on this phone and tried combinations and everything in the network/system/ everything and still not working.
The process was actually very simple since i have some programming experience. Other sources mention possible baseband issues? On the fastboot screen it shows a baseband version. all the information there appears normal. I only flashed the boot image one time to root and didn't mess with any other manual flashing processes. Just used twrp. I didn't quite understand twrp at first and therefore didn't get a backup using it... iused adb to make a backup which apparently didn't work so Im lost and hope someone could help me out here. please and thank you!
If i may add I can use mobile data just fine, i can browse the internet and such (with wifi off and data on only) so i really dont understand. Is this a normal issue to have when using custom roms? did I trip some security that blocked me now? any input???
I wonder, though, this moto g7 is an A/B partition thing. so if i understand correctly, flashing twrp would not work and thus why i did not do that. it makes sense. But should i try flashing it, booting into it then installing lineage? even if i did i feel like that would give me same issue considering the method i followed got me into lineageos, plus root checker said i was rooted.
What I can tell you is what I had to do in order to get LTE (voice calls) running on my G7 - I was forced to switch over to LTE because AT&T turned off 3G here in the US and 4G without LTE is not good enough for voice calls:
Get the latest stock firmware and install it using e.g. Lenovo's "Rescue And Smart Assistant". That will get Motorola's Android 10 on the phone.
After installation, go through setup and actually make a call (calling your mailbox is fine). Then check your ims status (*#*#4636#*#*, goto phone info, pull ims status) to see that ims is actually working.
Shutdown the phone and start installing LOS (use the partition copy script too to make sure that the partitions not touched by LOS installation are updated "on the other flash bank").
Go through LOS setup, select a valid APN for your setup, set "LTE only" or "LTE / WCDMA" for the network and make a call. You should be good to go.
Again this is what I had to do to get LTE working with AT&T USA. YMMW.
Markus.
I know this is way late, and you probably already figured it out. I didn't share the no text problem. The Problem isn't just the "LTE" setting itself. There is one more option(some Roms show it, some don't) I believe its in the phone app settings? VOLTE must be checked. I have noticed Some Roms do have this option and some don't. when volte is checked, it'll keep your data/internet on during a call, some Roms that option won't show up or isn't available. I haven't used G7 in a while, but I do remember the problem and how to fix (on my phone anyway).

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