Has anyone experimented with modems and found anything worth changing? My cell service is really crap with this phone. Running pie us99830b. Much worse than the K7 I had, two phones and they both have poor service.
callihn said:
Any better modems for the rs998?
Has anyone experimented with modems and found anything worth changing? My cell service is really crap with this phone. Running pie us99830b. Much worse than the K7 I had, two phones and they both have poor service.
Click to expand...
Click to collapse
What is RS998?
I am guessing it's a typo, meaning US998.
For me the US998 Pie 30b modem works perfectly, whereas the Oreo 20h is poor. It is very slow to latch onto a tower and change towers, and reluctant to make an LTE connection. It prefers HSPA. I am on Red Pocket GSMA (AT&T network).
I tried flashing back to Nougat (full ROM, not just modem) which worked much better, but as soon as I upgraded to Oreo again, the problems were back.
I tried flashing all kinds of ways (Upgrade, Partition DL, Refurbish) to no avail. I also tried flashing to H933, but never could get its modem working. And coming back to US998, the problem was still there (I'd hoped the H933 flash might clear it up).
I've tried wiping modemst1 and st2 partitions several times. I reset network settings, Master Reset, even R&D factory reset (SVC Menu). Of course lots of switching Network Mode (RAT Selection). Nothing will fix this modem.
Lately I flashed the H931 20h ROM (TWRP flashable) and that modem is perfect. However there are other things about that ROM I dislike, and I may go back to US998 20h after all.
I also have a second US998 on 30b and its modem remains perfect with the same SIM. Before that I had an H932 on Oreo which also was perfect (both on TMO postpaid, Red Pocket GSMT and Red Pocket GSMA). And my wife's H932 on Pie is also perfect, with her SIM as well as mine.
I haven't tried flashing the Pie modem on Oreo ROM. I might try that someday.
If anybody knows how to fully and completely reset modem storage (without losing IMEI etc) I am very interested.
Sorry OP, didn't mean to hijack your thread. But that's my experience.
Yes it was a typo.
I'd think that we could use twrp to restore the modem partition from a different ROM? I'm using ATT towers too.
You can simply flash other modems with LGUP. Just don't try to flash one from H932, which has different RSA encryption.
But I would assume that there's often some dependencies between a modern and a ROM.
If you're on AT&T, I have to say the H931 ROM was really excellent as far as modem. It also has a few additional LTE bands used by AT&T which are not supported by US998.
I don't do much lgup but have noticed twrp backs up a modem partition. I'm more curious if different version modems could be used from the stock rom, like the modem from 7 being used on 9 as most of my searching seems to indicate that the poor cellular reception started with the 8 Oreo update.
I don't know if flashing Nougat modem on Pie would work.
Once again, my experience is different than yours, since I find the Pie modem best by far. Better than Nougat, and much better than Oreo. And that's on two different US998 phones, one still being on Pie, the other rolled back to Oreo.
I have other reasons to prefer Oreo over Pie, but the modem is what I miss from Pie. Seeing as your experience is the opposite, even though we're both on AT&T, makes me wonder what other factors may be at play.
TheDannemand said:
I don't know if flashing Nougat modem on Pie would work.
Once again, my experience is different than yours, since I find the Pie modem best by far. Better than Nougat, and much better than Oreo. And that's on two different US998 phones, one still being on Pie, the other rolled back to Oreo.
I have other reasons to prefer Oreo over Pie, but the modem is what I miss from Pie. Seeing as your experience is the opposite, even though we're both on AT&T, makes me wonder what other factors may be at play.
Click to expand...
Click to collapse
Have you changed any settings in the hidden menu?
callihn said:
Have you changed any settings in the hidden menu?
Click to expand...
Click to collapse
Yes and no: The second of my US998 (still on Pie) has not had any changes in settings, and its modem works fine.
The first US998 I bought was essentially the same when I first received it (also on Pie). But back then I compared it to the H932 I'd had before (and which my wife still has). I found that it showed fewer bars than the H932 when connected to the same tower and the phone placed exactly the same place. Turned out measured signal strength was the same, just that T-Mobile is showing an extra bar in their ROM to give the impression that their network is better than it actually is. Pathetic!
Then I used Hidden menu->Field Test->Modem Settings->Band Selection->LTE Band to select only the low frequency AT&T bands (5, 12, 17, 29). This is something I'd always done on my H932 to improve reception in my home and save battery, and it's quite effective.
This particular LTE Band Selection menu was always available on H932. I was aware of the horror stories from US998 users back in the days, who got locked into a fixed LTE band after using the Band selection menu on US998 Nougat and Oreo. But I was glad to see that the TMO style LTE band Selection menu is present on US998 Pie. And it works: My phone then only connected to bands 5, 12, 17, 29 and avoided connecting to band 2, which AT&T prefers, but it takes a lot of power and doesn't penetrate our walls very well.
HOWEVER, I later realized that the Reset function in that menu doesn't work on US998 like it does on H932: You have to always choose a selection of bands. Not a huge deal, but I don't like hidden menu changes which I cannot undo.
I was surprised after rolling back to Oreo (via 10d, Master Reset and BL unlock) that the LTE band selections survived. By wiping modemst1 and modemst2 partitions I was able to make the phone connect to all bands again, but if I use Shortcut Master to load com.lge.hiddenmenu.tmo_only.LTEBandSelection (which IS available on US998 Oreo) it STILL shows the selections I made long ago on Pie (5, 12, 17, 29) even after many Partition DL and Refurbish flashes back and forth between US99810d, US99820b, US99820h, H93310h, and several Master Resets. The phone DOES connect to other bands, so presumably it's just a leftover display of the TMO menu settings. Still, something is clearly never wiped!
At first I thought that might be the reason my Oreo phone has such a sluggish modem, which only reluctantly connects to LTE. But when I am on US99810d or on H931h20 the modem is perfect. It's only when I am on US998 Oreo it becomes slow. So I have concluded that my modem issue is indeed a limitation of the US998 Oreo ROM, not caused by the menu changes I made. But it still irks me. If somebody can tell me exactly which partitions to copy from my other US998 (without losing IMEI, serial number etc) I would be very grateful!
So in short: Yes, I made some hidden menu changes on one of my US998 while it was still on Pie, and it worked fine to limit which LTE bands it connected to. My other US998 on Pie has had no such changes. Both of their modems work well on Pie, it's only the one on Oreo that has problems.
(Sidenote: May I suggest you edit the Title of this thread to fix the typo: rs998 -> US998. On XDA thread owners can do that themselves.)
Just noticed that in advanced. BTW my bands reset before when I did a factory reset. Not sure how or why that worked.
Interesting. When you say your bands reset, where do you mean? In the LTE Bands Selection Hidden menu?
If so, maybe what I need (and what I should have done before rolling back) is perform a Factory Reset on Pie.
TheDannemand said:
Interesting. When you say your bands reset, where do you mean? In the LTE Bands Selection Hidden menu?
If so, maybe what I need (and what I should have done before rolling back) is perform a Factory Reset on Pie.
Click to expand...
Click to collapse
Yes. Because I initially fubared after I had changed the bands from the default so I did a factory reset then restored the system partition and noticed that it was back at default when I looked again and still is, I gave changed it to global in the settings menu for now which seems to enable more bands. Though I'm still not sure if it would be better to set the bands but getting back to default is a bit too much. I've also noticed settings for 5G NSA and TDA, which isn't even available here yet. Wish I knew what bands are enabled with the default and when set to global in the settings. Also been wondering about interference if bands not being used are enabled. Would be great if there was an easier way to get back to default too, it's just a bit time consuming is all, not too bad with a recent twrp backup but still more time than I typically have lately.
callihn said:
Yes. Because I initially fubared after I had changed the bands from the default so I did a factory reset then restored the system partition and noticed that it was back at default when I looked again and still is, I gave changed it to global in the settings menu for now which seems to enable more bands. Though I'm still not sure if it would be better to set the bands but getting back to default is a bit too much. I've also noticed settings for 5G NSA and TDA, which isn't even available here yet. Wish I knew what bands are enabled with the default and when set to global in the settings. Also been wondering about interference if bands not being used are enabled. Would be great if there was an easier way to get back to default too, it's just a bit time consuming is all, not too bad with a recent twrp backup but still more time than I typically have lately.
Click to expand...
Click to collapse
Thank you.
Did you reset it with a TWRP Factory Wipe? If so I am very surprised that it reset the bands, since that merely wipes the data partition.
But if you Factory Reset it using the Settings menu (requiring stock recovery) that makes sense, since it wipes other things that normally persist (such as the FRP account, and who knows what else).
I am tempted to update mine to Pie again and give that a try to see if it makes a difference to the modem when I roll back to Oreo again.
You can reset the actual bands by wiping modemst1 and modemst1. It's just the Band Selection menu will keep displaying what you last selected. You can select something else there and click Save, and it will take.
What interests me is the fact that ANY data persists after Refurbish flash and other wipes on earlier versions. And it makes me wonder if there are some smelly leftovers from Pie unless one performs a Factory Reset before rolling back.
Edit: Just to clarify: We already KNOW there are leftovers from Pie after rolling back, pertaining to the partition table. That's why we roll back via Partition DL to Nougat. But I wonder if there are OTHER undesirable leftovers that could be cleared with a Factory Reset in Pie before rolling back. NOT a Master Reset (button dance) and NOT a TWRP Factory Wipe, but a good old fashioned Factory Reset from the Settings menu (again, which requires stock recovery).
TheDannemand said:
Thank you.
Did you reset it with a TWRP Factory Wipe? If so I am very surprised that it reset the bands, since that merely wipes the data partition.
But if you Factory Reset it using the Settings menu (requiring stock recovery) that makes sense, since it wipes other things that normally persist (such as the FRP account, and who knows what else).
I am tempted to update mine to Pie again and give that a try to see if it makes a difference to the modem when I roll back to Oreo again.
You can reset the actual bands by wiping modemst1 and modemst1. It's just the Band Selection menu will keep displaying what you last selected. You can select something else there and click Save, and it will take.
What interests me is the fact that ANY data persists after Refurbish flash and other wipes on earlier versions. And it makes me wonder if there are some smelly leftovers from Pie unless one performs a Factory Reset before rolling back.
Edit: Just to clarify: We already KNOW there are leftovers from Pie after rolling back, pertaining to the partition table. That's why we roll back via Partition DL to Nougat. But I wonder if there are OTHER undesirable leftovers that could be cleared with a Factory Reset in Pie before rolling back. NOT a Master Reset (button dance) and NOT a TWRP Factory Wipe, but a good old fashioned Factory Reset from the Settings menu (again, which requires stock recovery).
Click to expand...
Click to collapse
I think hidden menu might be saving some files on the sd card when changes are made as I gave seen the folder created when just going into the menu without making changes or saving.
I wouldn't expect Hidden Menu to rely on SD card for storage, but of course not ruling it out.
In my case I don't have an SD card in my phone, and Internal Storage has been wiped countless times where the LTE band selections survived. And again, possibly other leftovers too. The only things I have yet to try are (A) mess with other sensitive partitions (such as fgs) and (B) update to Pie again and perform a Factory Reset from there. If I had more time on my hands, I'd definitely try the latter.
Edit: I see there is indeed an Android/data/com.lge.hiddenmenu folder on my Internal storage. So you're right it writes something, although no files in that folder. I'm guessing it is for log files. But nothing persistent for sure, as it is lost in a factory reset.
Is the 9 modem still borked for wifi on 10 roms? I'm on 20b modem right now and it seems fine. Fingerprint sensor is still wonky though
How can I tell what modem I have installed on my phone? Where do I find it and what does it say? I am currently on us99830b twrp flashable rom. I have tried a couple of version 10 roms, but do not have Wi-Fi or a tethering hotspot on it (which I do have now on 30b).
I have downloaded the pie modem img file and while in twrp, after installing the ver 10 rom, I have flashed (I think) the pie modem (in twrp, install image>install modemimg>tic modem box then flash and reboot). Is that the correct procedure? Wi-Fi still does not work. I have done that a couple of times (on POSP). But, I am unsure if it installed? Am I on the pie modem or ver 10 modem, even now on 30b rom?
I want to make sure I have done the install correctly before trying other fixes.
Thx, for any help offered. Much appreciated.
Related
For the last two weeks, I've miraculously had 4G LTE working on my vs985 despite using the 35b bootstack and 47a stock firmware (rooted and debloated)
I know it was just on band 4, and the 35b radio disables LTE on non Verizon networks. But somehow, amazingly, it was working anyway even across reboots, cache wipes, flashing zips for xposed, and even TWRP backups/restorations.
But when I removed my SIM card, put it in my old phone, and then put it back in my vs985, I lost 4G LTE!
Here are all the details I can remember, although I don't know what might be relevant or accurate:
Originally, I flashed to 10B stock using the TOT. From there I rooted and installed TWRP and flashed various roms to see what works best. I ended up on CM13, but at that point, my SIM card wasn't being detected at all, and I actually took it to AT&T to check my SIM and it was fine. They told me the phone must have re-locked itself. So I went home and wiped everything but microSD. I flashed the 35b bootstack, vs98547a rooted stock. I set up the phone with my google account and put in AT&Ts NXTGENPHONE APN settings. THEN I flashed a debloat zip (even though it gives you more space if you do it before starting the phone.) When I left the house and my phone disconnected from the Wifi, I had a 4G LTE signal! I had no idea how I got so lucky! When I got home, I made a full backup with TWRP, and kept only the zips I had just used for this setup.
So I got comfortable with the phone for two weeks, and now I'm crushed to have lost LTE! I can still use mobile data if I change my APN settings to "phone" instead of NXTGENPHONE, but it's obviously slower.
I wish I knew exactly why I manged that minor miracle for two weeks. I tried everything again, even flashing TOT, but without luck and I have no idea what perfect storm of events may have affected that magical time.
The zips I saved were: 35b bootstack, rooted vs98547a, and a custom debloat zip. I also saved the 10b radio zip, but I just can't remember if I used it that last time. I can't imagine I did, because obviously it wouldn't work with 47a. But then why did I keep it?
My guess is that somehow I got around the disabling of LTE, perhaps by having something specific flashed to a partition that only TOT can reach? Or maybe an LTEconfig got deleted or modified? Did I somehow hybridize the radios? I heard that maybe autoprime is working on a unified radio that might solve this problem?
Do you guys have any ideas? How did I ever make it work?
I'm having a weird signal type problem with US998 on Verizon, and want to see if anyone has any suggestions. If I start clean (I'll explain in a moment) I get 4G all the time - low signal or not. If I reboot the phone it goes to 3G, occasionally 1X mode, and sometimes no signal, but never to 4G mode even in areas that have really strong signal. As part of trying to figure this out, I've flashed the modem partition with the one from Verizon KDZ, and get the same result. If I boot into TWRP and wipe modemst1 and modemst2 from the terminal using dd (the starting clean), then reboot, 4G magically works again - until the phone gets rebooted or power cycled.
Because of some things I did with my early attempts at using the Verizon modem, which also include updating Magisk to version 17 that day (I first thought the bootloop was from the modem), plus I had dirty flashed 20d, I decided to start from scratch. I backed-up the data partition and made a copy of everything TWRP excluded (media), used LGUP to "refurbish" the phone using the 20e KDZ , and flashed the Verizon modem from their 20d KDZ. Unfortunately the problem remains.
The phone currently has US998 20e firmware, except for the modem is from Verizon's 20d, TWRP, Magisk 16, the Google Dialer & Contacts apps flashed using syndre's provided zip (without the Magisk module) - no other mods.
The KDZ files don't have the FSG partition separate - that was one of my first thoughts, as that usually gets done with the modem. I'm thinking of flashing the System part of the Verizon KDZ, or possibly trying a full flash of it. Could it be the phone hardware itself?
Flashing System from the Verizon KDZ seems to have fixed my problem - I reflashed the modem partition (again) as well, and also did the Persist partition (which I tried before with the modem partition). As part of clearing out some of the Verizon included stuff, I noticed there is some extra configuration (APNs, etc) apps included that may be part of what fixed things.
Basically, If you have a "stock" US998 and have signal issues on Verizon, either do the whole conversion to (or back to) a VS996 by flashing the Verizon KDZ (except recovery), or mix and match (with possible negative side effects) - just flashing the modem partition isn't enough.
hitokage004 said:
Flashing System from the Verizon KDZ seems to have fixed my problem - I reflashed the modem partition (again) as well, and also did the Persist partition (which I tried before with the modem partition). As part of clearing out some of the Verizon included stuff, I noticed there is some extra configuration (APNs, etc) apps included that may be part of what fixed things.
Basically, If you have a "stock" US998 and have signal issues on Verizon, either do the whole conversion to (or back to) a VS996 by flashing the Verizon KDZ (except recovery), or mix and match (with possible negative side effects) - just flashing the modem partition isn't enough.
Click to expand...
Click to collapse
Flashing the @westwood24 VS996 20D ROM should do the same thing, shouldn't it? It's just VS9996 20D KDZ with TWRP.
[ROM][VS996][Stock][OREO] LG-VS996 20D ROM
I'm just asking, as I'm not a Verizon customer. But my understanding (which may be wrong) is that flashing that "ROM" was basically the same thing as Frankenstein, except it kept TWRP and all you needed to do was then re-flash Magisk.
ChazzMatt said:
Flashing the @westwood24 VS996 20D ROM should do the same thing, shouldn't it? It's just VS9996 20D KDZ with TWRP.
Click to expand...
Click to collapse
My understanding is that using a flashable zip or Upgrade mode in LGUP will flash everything except the Data partition. I used Partition DL mode and flashed only those three (System, Modem, and Persist) - I'm trying to keep away from as many of Verizon's modifications as possible.
If I start to have other issues, I'll probably start clean, and install the whole Verizon KDZ. Otherwise I might start picking at the various Verizon mods, and see if maybe I can figure-out what does what.
I went into the Hidden Menu and forced LTE Only. I have poor signal where I live and honestly 3g blows.
I looked at some of the hidden menu stuff, the problem is some of that seems to be legacy stuff they never removed, and made things worse.
hitokage004 said:
I looked at some of the hidden menu stuff, the problem is some of that seems to be legacy stuff they never removed, and made things worse.
Click to expand...
Click to collapse
Field Test -> Modem Settings -> RAT Selection is where I forced mine to LTE only
Hey there, I have the V30 US998 model (bought from US Cellular, my service provider as well) and I'm having issues with my service after flashing.
Stock root works perfectly fine, but when I try to flash any Oreo or Pie room I either get with with perfect SMS and MMS (only works after making a call) with both 4g and 3g running about .3 Mb.....or I don't get any of it working at all.
Is there something I'm missing? Maybe flashing a kernel? I would appreciate all help and advice!
maybe after flashing try adding the corresponding apn for your carrier and see if that helps out with your mms and sms issue. also make a back up of the stock rom with root if swapping roms. it'll be faster than restarting from scratch after a flash.
Make sure your APN is set correctly. This is what's recommended by US Cellular for the V30:
Name: USSC
APN: internet
Proxy: wap.voicestream.com
Port: wap.voicestream.com
Username: [email protected]
password: yourMSID
MCC: 310
MNC: 120
Authentication Type: not set
If "APN type" pops up: default,supl
Not sure why they suggest putting a domain in the port field as I've never had a carrier that used anything there... it's always been "not set" for me. It doesn't make sense logically by basic understanding of the internet but maybe it's something weird and specific to phones and carriers.
Not sure exactly what MSID is but apparently if you call 611 US Cellular can give you it.
Normally nothing "pops up" but that's what their site claims. Usually "APN type" is where you set "default,supl".
To save those APN settings you click the three dots at the top right then select save.
Ultimately, you could nandroid your flashed phone and put your stock US Cellullar ROM back on, record the APN data and flash the nandroid back onto the phone then restore the default APN settings but first I suggest you try to just enter the APN based on the information from the US Cellular site and the below step.
Another thing that could be going on, assuming the APN is set correctly is to enter the following hidden menu with the dialer: *#*#4636#*#* and go select the appropriate preferred network type. For me on ATT I went with "LTE/UMTS auto (PRL)". I think this should work for you as well. This resolved data issues in the past on my Nexus 5 and I had the same problem on the V30+ after flashing a ROM which it also resolved.
s0lidsneak said:
Make sure your APN is set correctly. This is what's recommended by US Cellular for the V30:
Name: USSC
APN: internet
Proxy: wap.voicestream.com
Port: wap.voicestream.com
Username: [email protected]
password: yourMSID
MCC: 310
MNC: 120
Authentication Type: not set
If "APN type" pops up: default,supl
Not sure why they suggest putting a domain in the port field as I've never had a carrier that used anything there... it's always been "not set" for me. It doesn't make sense logically by basic understanding of the internet but maybe it's something weird and specific to phones and carriers.
Not sure exactly what MSID is but apparently if you call 611 US Cellular can give you it.
Normally nothing "pops up" but that's what their site claims. Usually "APN type" is where you set "default,supl".
To save those APN settings you click the three dots at the top right then select save.
Ultimately, you could nandroid your flashed phone and put your stock US Cellullar ROM back on, record the APN data and flash the nandroid back onto the phone then restore the default APN settings but first I suggest you try to just enter the APN based on the information from the US Cellular site and the below step.
Another thing that could be going on, assuming the APN is set correctly is to enter the following hidden menu with the dialer: *#*#4636#*#* and go select the appropriate preferred network type. For me on ATT I went with "LTE/UMTS auto (PRL)". I think this should work for you as well. This resolved data issues in the past on my Nexus 5 and I had the same problem on the V30+ after flashing a ROM which it also resolved.
Click to expand...
Click to collapse
I tried to save the APN settings but it failed due to an error? I think it had something to do with either port or the apn type. So I am curious, would grabbing us99820e_02_0910.kdz for US998 (US Cellular) and using LGUP help in this instance? Would all I have to do is reunlock the bootloader and root?
KazutoFloofles said:
I tried to save the APN settings but it failed due to an error? I think it had something to do with either port or the apn type. So I am curious, would grabbing us99820e_02_0910.kdz for US998 (US Cellular) and using LGUP help in this instance? Would all I have to do is reunlock the bootloader and root?
Click to expand...
Click to collapse
You don't have to re-unlock bootloader. It will stay unlocked unless you re-lock it; please don't. Because to re-unlock you have to temporarily downgrade to pre-July 2018 firmware.
Why US998 20E? Why not the most recent? 20E is older. 20F is most recent You can even flash via TWRP. Just reflash Magisk before rebooting.
You can also enable DTS 3D stereo on US998 20F:
https://forum.xda-developers.com/lg-v30/how-to/enable-dts-3d-stereo-lg-v30-variants-t3887139
At least try it out before you flash back to custom ROM...
ChazzMatt said:
You don't have to re-unlock bootloader. It will stay unlocked unless you re-lock it; please don't. Because to re-unlock you have to temporarily downgrade to pre-July 2018 firmware.
Why US998 20E? Why not the most recent? 20E is older. 20F is most recent You can even flash via TWRP. Just reflash Magisk before rebooting.
Click to expand...
Click to collapse
I stated before, even flashing back to stock was still giving me issues. I really haven't had much sleep recently due to this issue, so please have patience. I ended up plugging my V30 into my laptop for LG Bridge and it automatically updated to us998 20F. I am hoping its what I needed.
KazutoFloofles said:
I stated before, even flashing back to stock was still giving me issues. I really haven't had much sleep recently due to this issue, so please have patience. I ended up plugging my V30 into my laptop for LG Bridge and it automatically updated to us998 20F. I am hoping its what I needed.
Click to expand...
Click to collapse
I only saw where you said stock rooted works fine:
KazutoFloofles said:
Stock root works perfectly fine, but when I try to flash any Oreo or Pie room I either get with with perfect SMS and MMS (only works after making a call) with both 4g and 3g running about .3 Mb.....or I don't get any of it working at all.
Click to expand...
Click to collapse
For custom ROMs, you do often have to edit or even create APNs for specific carriers.
Hope stock 20F solves your problem.
Sent via open market LG US998 V30/V30+
ChazzMatt said:
I only saw where you said stock rooted works fine:
For custom ROMs, you do often have to edit or even create APNs for specific carriers.
Hope stock 20F solves your problem.
Sent via open market LG US998 V30/V30+
Click to expand...
Click to collapse
Yeah, when I got back home and flashed back to stock, I was only having issues with 4G and it's speed. Just went up to F and I'm still running into them. I also can't edit the apn settings I actually need to change.
Screenshot below
KazutoFloofles said:
Yeah, when I got back home and flashed back to stock, I was only having issues with 4G and it's speed. Just went up to F and I'm still running into them. I also can't edit the apn settings I actually need to change.
Screenshot below
Click to expand...
Click to collapse
Try "add APN", then make it the default.
View attachment 4689821
Sent via open market LG US998 V30/V30+
KazutoFloofles said:
Yeah, when I got back home and flashed back to stock, I was only having issues with 4G and it's speed. Just went up to F and I'm still running into them. I also can't edit the apn settings I actually need to change.
Screenshot below
Click to expand...
Click to collapse
Also for US CELLULAR, you want LTE/CDMA, right? I of course have where I need for AT&T. Don't use what I have, I'm just showing the options.
Sent via open market LG US998 V30/V30+
ChazzMatt said:
Also for US CELLULAR, you want LTE/CDMA, right? I of course have where I need for AT&T. Don't use what I have, I'm just showing the options.
Sent via open market LG US998 V30/V30+
Click to expand...
Click to collapse
I believe US Cellular is one of the last to use CDMA, but I made the apn default but still everything but the first two are still grayed out.
Download 20f zip to sd card in your phone. Go into twrp and go to wipe. Swipe factory reset then go to advanced wipe and wipe the things i have in sceenshot. Then format data. Flash zip. Wipe cache. Reboot system. Make sure you backup anything important because if it is on phone storage it will be gone. You can flash magisk later if your phone works after that. I am on us cellular also.
Before I saw this post I was having problems with cell data, after leaving wifi data will not kick in, I had to go to setting and enable 3g only then LTE and after that, I got data connection, what I did I just dirty flash 20f (I didn't want to lose my info), and everything has been working fine.
PS
I never had a custom rom, it was just converted from sprint to US998, and worked fine for a while and then suddenly started having the data problem
fatboysh said:
Download 20f zip to sd card in your phone. Go into twrp and go to wipe. Swipe factory reset then go to advanced wipe and wipe the things i have in sceenshot. Then format data. Flash zip. Wipe cache. Reboot system. Make sure you backup anything important because if it is on phone storage it will be gone. You can flash magisk later if your phone works after that. I am on us cellular also.
Click to expand...
Click to collapse
Question, have you gotten any of the Oreo or Pie roms to work nicely with your phone and service? Curious cause now I've fully fixed my phone's service And junk, kinda getting antsy to try out one of them.
Liquidremix worked good but you have to make a call after reboot to get calling and data to work. Right now i prefer stock rooted
After waiting a bit I haven't found any ROMS supporting US Cellular off the bat.
I'm on the latest update US99820G and still having no luck. Anyone else find a fix found a similar post!
I don't have a US Cellular phone (I have the vs996 (Verizon) Frankensteined to US998 - - currently on 20g). For me to install any custom AOSP rom, I have to first do a clean wipe and install the twrp flashable US998 - - 20e rom. I then do a clean wipe and install the AOSP custom Rom of choice (resurrection remix, Liquid Remix, etc.).
If I don't do it this way, then I have problems with data, sound, texts, etc. Again, I don't know if this applies to the US cellular phone or not.
I still have to make a phone call (I call my voice mail) after reboots to get things working.
Just tried to update to Q Havoc, which went fine, but no wifi. Tried using the wifi patch. It failed at "unable to wipe persist" or something. After that I would just bootloop. Tried my TWRP backup (it had worked earlier), which would loop at the bootleggers splash screen. Tried a couple of fresh installs with different roms, wipes, etc. Same thing. Tried THIS stock ROM, now stuck at the LG boot screen. I still have TWRP and unlocked BL.
So...at this point I would probably try using LGUP if I had access to a windows box in the next couple of days (I don't, just linux).
Any other solutions that I could do through TWRP/adb/fastboot whatever?
If not, what step do I start with using the LGUP method?
Ok, so I was able to wipe the data on that stock firmware and it then booted. From there able to restore my backup. However, the cell radio doesn't seem to be working. When I loaded the stock rom I got a no sim detected error but didn't pay attention to it since I immediately restored my backup. I tried reflashing the kernel with no luck.
Always tell the variant you have. There's two dozen different V30 variants. Some have specific notes.
When you say you tried to "update" to Q, did you ever have AOSP ROM before that? If you have a former H931/H933 did you ever do the steps necessary to run AOSP ROMs? See, stuff like that.
Sorry, LS998-->US998. So I was running CM based rom before that, but don't think the AOSP stuff applies in my case.
Anyway, finally got it working. Reflashed with your (@chazzmatt) stock rom stock oreo (I used 20e), which worked fine and I was able to restore as usual. Is the earlier rom i linked to the euro version only/not compatible with US carriers?
Still not sure why I can't flash the wifi fix, still getting errors with the persist partition, but I'll follow that up on another thread.
nola mike said:
Sorry, LS998-->US998. So I was running CM based rom before that, but don't think the AOSP stuff applies in my case
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Right. Converted LS998 to US998 doesn't need the tedious extra H931/H933 AOSP Prep steps.
nola mike said:
Anyway, finally got it working. Reflashed with your (@chazzmatt) stock rom stock oreo (I used (US998) 20e), which worked fine and I was able to restore as usual. Is the earlier rom i linked to the euro version only/not compatible with US carriers?
Still not sure why I can't flash the wifi fix, still getting errors with the persist partition, but I'll follow that up on another thread.
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Right. H930 variant stock KDZ/ROMs are not compatible with any North American variants. There's warnings in my various KDZ threads to only flash H930 to H930 and North American to North American -- and T-Mobile H932 is an island unto itself. Modem partitions are especially not compatible.
Yes, there is a thread here in this forum that shows how to flash selected portions of H930 KDZ over North American, but I have nothing to do with that and I will never recommend it to anyone. Some people may have valid reasons for doing that (for East European language, etc) but they take full responsibility. For that hack, you have to to Partition DL flash and OMIT certain partitions, and when doing updates ALWAYS continue to OMIT those partitions.
I was using an AOSP rom for several months but decided to roll back to my stock oreo rom backup in TWRP. Only issue is my VoLTE is not working anymore during calls. I am on Oreo (H93220s) and never updated to stock PIE.
Is there an easy way to flash a modem or something without having to completely start from scratch? I found a 20r modem in one of the T-Mobile threads, but not sure if I should flash that on 20s. Thanks for any help.
Of course verify you have an LTE connection. I am sorry, just making sure :angel:
Then try a Network settings reset, if you haven't already: Settings -> General -> Reset -> Network settings reset. Then restart the phone.
If that doesn't work, you could try re-loading IMS settings using the LG Hidden menu: Dial *#546368#*932# using the stock dialer -> Field Test -> IMS Setting -> Test -> Load Preset Configuration -> Initialize Configuration. Then back out twice to Field Test -> IMS Setting -> Test -> Restart IMS process. Give it a few minutes.
If that doesn't work, then I'd say probably some firmware wasn't restored to stock after using the custom ROM. Try flashing @weakNPCdotCom's FullStock.zip from the thread linked below, factory wipe in TWRP. Once you've verified VoLTE works, restore just the data from your TWRP stock backup.
[STOCK] [H932] [20s] [Oreo] T-Mobile LG V30 Stock Collection (Includes Debloated)
https://forum.xda-developers.com/lg-v30/development/stock-t-mobile-lg-v30-stock-collection-t3917560
Finally, if that doesn't do it either, you may have to perform a genuine Factory Data Reset from the Android Settings menu. This wipes some persistent data which isn't wiped by TWRP nor by Master Reset. It requires stock recovery, so you will lose TWRP. Personally I would perform a full flash of stock 20s using LGUP in Refurbish Mode. This will also ensure that all necessary TMO partitions are flashed.
I suppose you could flash TWRP to your laf partition (as described in the H932 root thread) then flash 20s in Partition DL mode, everything BUT laf. That way you wouldn't have to start over rooting the phone.
My only concern is that H932 is easily disturbed, sometimes with bad consequences. Being kind of OCD, I would probably go nuclear if it came to this, meaning full Partition DL to 10d (to ensure partitions are straightened out), THEN partition DL to 20s, THEN Factory Reset, verify that VoLTE is working. Then you'll have to start over rooting, including temporarily back to 10d again. But that's just me
Once you got it working and are back on 20s, THEN you can restore just the data from your TWRP stock backup. IOW restoring that backup is your last step.
Thanks for the detailed tips. I have tried everything you mentioned so far, up to flashing the fullstock.zip, and unfortunately that still didn't fix it. I had this problem with another LG phone before, and the only way I could get it fixed was flashing a .KDZ, but I know this phone is a lot trickier considering the root method and all.
Am I able to flash a KDZ and not have it flash the LAF partition all over so I don't have to re-root it? Thanks again.
Got it. Yeah you probably need a full firmware flash.
I think I misspoke in my last post: Of course you can't put TWRP on laf and then use LGUP. Duh
I can't really think of a way to do a full flash (incl recovery) without having to start over. I'm sorry.
Maybe there is a way that others can think of. I'm not my sharpest right this moment.
Edit: Just to make sure, you know your account and SIM are provisioned for VoLTE? And you're on TMO, right? H932 doesn't do VoLTE on other carriers (such as AT&T).
Edit2: If you haven't already gone nuclear, and assuming you're on 20s FullStock.zip, you could try flashing TWRP to laf (as previously discussed), then flash stock recovery to recovery -- if you can find stock recovery somewhere, either as an img or zip. Just make sure it's same version (20s). This should allow you to perform a Factory Reset from the Android Settings menu. If that solves VoLTE, you can use your laf-TWRP to put TWRP back on recovery and laf back on laf. (I hope that made sense.)
Again, I would go nuclear, but I can definitely understand if you want to avoid it. There are also risks when rooting H932, in addition to the work.
So I went through the whole process of flashing back to 10d and redoing root. Same issues. Then my wife tells me that T-Mobile is having network issues all over, even my Verizon phone was having calling issues. What a waste of time that caused me. It must have just been coincidence that the same day I start messing with my phone that the whole network goes down! Thanks again for the great suggetions though.
T-Mobile's having huge network issues at the moment.
Caffination said:
T-Mobile's having huge network issues at the moment.
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Sprint has infected them!
Aww man, I'm sorry you wasted all this time on nothing. Best I can come up with is congrats on successfully rooting your H932. Again!