Data issues after flashing Custom Rom - LG V30 Questions & Answers

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.

Related

Phone unlocked (AT&T give code) but APN not editable?

I have unlocked my AT&T Galaxy Note by requesting the SIM unlock code from AT&T. I then put in a non-AT&T card (T-Mobile), rebooted the phone and was asked for the network unlock code. I entered the code and it was successful. The T-Mobile SIM card works.
I then went to the APN settings to edit the APN and there was only one, the original one from AT&T (shown as ATT PTA). Strangely, this APN CANNOT be edited OR DELETED. Even when I create a new one and select that new APN, the phone always revert back to the original APN.
My understanding is that once the phone is unlocked, the original APN can be edited OR deleted and I can use another APN (T-mobile, etc.). Can somebody help?
Thanks!
Unlocking the phone does not unlock software areas that att has locked down. Good news is that you can add your own apn in that screen.
On the APN setting screen, press the menu button, then "new apn". Type all of your settings, then hit menu and save. Now you can select your new apn on the APN screen.
You don't have to worry about the pta apn from att. If it's not selected, it's not doing anything.
Sent from my SAMSUNG-SGH-I717 using xda premium
chrstndsgnr said:
Unlocking the phone does not unlock software areas that att has locked down. Good news is that you can add your own apn in that screen.
On the APN setting screen, press the menu button, then "new apn". Type all of your settings, then hit menu and save. Now you can select your new apn on the APN screen.
You don't have to worry about the pta apn from att. If it's not selected, it's not doing anything.
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
Thanks for the explanation! As long as I can use the phone in NON-AT&T network, I am happy.
To eliminate that APN you will have to flash a custom rom. You can be stock and custom.
What ^^^^^^^^^^^^^^^^^^^^^^^^ Said....g
He wants to run on T- mobile, would this be his problem, doesn't he need a different modem flashed like for example.. the Blaze modem to run T-mob?
BLACKSTAR XI -SGH-I717 xda-developers app SAMSUNG done right
uwannabananababy said:
He wants to run on T- mobile, would this be his problem, doesn't he need a different modem flashed like for example.. the Blaze modem to . . .
Click to expand...
Click to collapse
Up until about a month ago that was correct, but t-mobile is migrating to the same bands as at&t so test the connection first.
Just using the stock LF6 modem and the t-mobile APN and live with that for a day or two to see if you are in an area that has been migrated.
If you never see H+ or 4G icons you will have to flash the Blaze modem.
Just a quick update:
The original APN cannot be edited, so I created a new APN and select that. When I press the "back" button and go back to the list of APN, the phone AUTOMATICALLY selected the original APN, not mine.
I selected that again, press back button and waited for 5 minutes (in case the phone trying to update whatever it needs with the new APN). Went back to the list of APN and the original APN was selected again! (???).
Did you save the APN you created?
rangercaptain said:
Did you save the APN you created?
Click to expand...
Click to collapse
I did, that's why I was able to select the radio button from the list. So the list shows 2 APN, BUT as soon as I exit, the default APN was reselected.
In this case, a custom rom is needed for APN changes to stick.
I suggest you look in the super thread (top of the general section)
In the stock roms category you'll see a stock (rooted) version of the rom you need.
You can flash this build which allows APN editing and deletion.
Visually the rom is identical to stock, but sets the system permissions via root access to allow those changes.
Once the modification is complete, you can simply reset your counter and unroot to keep a stock device condition.
The beauty of this device is it's simplicity in root/unroot technique...g
Ranger gets the credit for the rom change advice.....I'm just mentioning it again ...g
Thanks for the information all, really helpful!
I flashed a custom ROM just for testing (CWR backup of course) and indeed I was able to change the APN and it sticks! Definitely have to do with my original stock ICS, even though I rooted it.
You can be mostly stock - - that's what I prefer. But our generous developers take the stock rom and tweak it so we can enjoy modifying our phones and be mostly stock. I'm using the Novena rom.

[Q] Lost automatic connection with my data plan

Hi everybody!
Yesterday, I applied a custom rom to my Galaxy Note and after a successful installation, my data plan wasn't working like it used to be.
I have to say this isn't the first time I have done this, and in the previous opportunities after flashing the rom and rebooting, the EDGE/3G icon appeared by itself detecting my data plan. I never had to configure the APN settings (like it is said in many posts I have seen here).
So, when I realize that it wasn't working properly, I re-flashed the rom but didn't worked. So then, I downloaded the ICS stock rom and flashed it through Odin, hoping it would reset all things here and would give me the initial configuration, but that didn't work either.
I have entered through settings and deactivated/activated the options related to mobile data, but that icon never appears or my data connection showed up.
Forgot to mention that this phone was unlocked through cellunlocker by code, and that I can make phone calls with no problem and also the Wifi works fine... And thank you in advance for any advice/help that you could make
If it's happening with different ROMs then take a look at your modem (baseband). Are you using I717UCLF6? Go to System Settings-About Phone-Baseband Version.
Like ^^^^ said, and you didn't say it, but I'm guessing T-Mobile. So flash any ROM you like, reboot and let but settle in, then flash the Blaze 4G or whatever T-Mobile modem works best for you.
You did enter your APN info?
Agoattamer said:
You did enter your APN info?
Click to expand...
Click to collapse
This....^^^^^^^^^^^^^^^^^^^^^^^^^^^................g

How to go from fulmics MM ROM to XDABBEB's VS985 (help!)

i flashed fulmics ROM just before others posted that it has issues on VS985 (3G only + laggy WiFi). since this is not going to work for me, i tried moving to CandySiX but had to reflash fulmics due to baseband incompatibility. since then, i have decided to stick with LP for a while and want to flash XDABBEB's VS985. is it safe to do so? it seems like it should be since it has the full bootstack for flashing. however, i really don't want to brick my phone...
btw, fulmics is 30b while XDABBEB's VS985 is 35b.
i have attached a screenshot of my software info.
many many thanks!
i found some courage and flashed XDABBEB's VS985 following the instructions and it went smoothly.
i wish that there was some way to remove the VS985 from the list of supported phones from fulmics ROM since i don't think that anyone would consider 3G only to be supported. it is likely due to the difficulty of supporting CDMA when you don't actually have a CDMA phone to test on.
In my case I've been using Fulmics during a couple of weeks and it shows thw 4G connection icon. After flashing I get no sim, but fulmics tweaks has the verizon hidden menu where you can select the network mode in Modem Protocol section. Hope it helps.
jmenc said:
In my case I've been using Fulmics during a couple of weeks and it shows thw 4G connection icon. After flashing I get no sim, but fulmics tweaks has the verizon hidden menu where you can select the network mode in Modem Protocol section. Hope it helps.
Click to expand...
Click to collapse
Hi there, im sorry, can you rephrase that since I'm interested in using Fulmics.
Are you saying that you have the VS985 and are using Fulmics AND still have 4G icon? And to do so, what exactly did you have to select in the network mode in the hidden menu ?
Thanks,
geminihc said:
Hi there, im sorry, can you rephrase that since I'm interested in using Fulmics.
Are you saying that you have the VS985 and are using Fulmics AND still have 4G icon? And to do so, what exactly did you have to select in the network mode in the hidden menu ?
Thanks,
Click to expand...
Click to collapse
Yes, in my case I've selected network mode automatic in the hidden menu, at this point it recognises my sim and prompts for the pin number. After that I go again to the modem protocol and select LTE band selection and select band 3.
Finally to check everything is right go to the normal network advanced options in settings, to see if anything is selected in network mode and select the desired, in my case is automatic 2G/3G/4G.
That worked for me.

Flashed CM13 now no data

So got my phone rooted and ready to accept a custom ROM. Now what ever ROM I flash I get no cellular data. Only when I am on WIFI do I get data. On my status bar it shows my LTE connection to T-Mobile with a ! in it. Am I supposed to flash or do something else when flashing a ROM? I used the latest version of TWRP 3.0.2-0
OK if I revert back to the stock Oxygen OS 2.2.1 ROM it now works fine. What would cause flashing a custom ROM not to have signal?
No data means ur using the wrong cm13 version(i have no data problems on ashwins build.) or maybe your apns just arent configured. Google for your provisers apn configs and set them manually. Also validate that you can see your IMEI on the phone.
Sent from my ONE E1003 using Tapatalk
I got the CM from the forum here.
You missed the point.
Sent from my ONE E1003 using Tapatalk
AW OK got what you mean Downloaded Beanstalk CM13 still same problem. Flashes fine then I have no data no signal at all from T-Mobile. Only the stock Oxygen OS ROM works.
Just gave up. Went back to Stock recovery and stock ROM and locked my boot loader. Everything now works as intended. Not sure why all 10 ROM's I tried would flash and load fine but I would have no cell signal strange....
If you need to manually set APN settings go to Settings > SIM cards > SIM 1 settings > APN config.
There click on one APN-setting in the list to open it. Change everything you need, including the name (example: name: Hollandsnieuwe, APN: live.vodafone.com, username: vodafone, password: vodafone, MCC: 204, MNC: 04, APN-type: default, APN-protocol: IPv4, Roaming protocol for APN: IPv4, the rest is blank) then click: Menu > Save. Then go back to the APN list and click the dot right to the entry you just created. Then restart your phone and you should have the new settings active.
By the way: In OOS 2.2.1 you don't have these settings but they are probably already righteous.
I have this problem too but I saw a fix somewhere and cannot find it
Yeah I got it to work finally. It was the APN setting thing. But what is odd is, if I use the T-Mobile APN settings it will not work. If I use MetroPcs (Which T-Mobile owns) then it will work fine. So go figure....
falcon26 said:
Yeah I got it to work finally. It was the APN setting thing. But what is odd is, if I use the T-Mobile APN settings it will not work. If I use MetroPcs (Which T-Mobile owns) then it will work fine. So go figure....
Click to expand...
Click to collapse
APN is fine. I also have the same APN in other ROMs. I'm also on Telekom.mk (ex T-Mobile Macedonia)
Tmob no.. Roaming +
If I'm on any rom other than OOS I can use data when roaming (99.9% AT&T tower) but have issues with data on T-mobile. However OOS = no roaming data, but no t-mobile data problems. CM 13 and MM roms are useless for a daily driver. I can't recall which MM rom I tried recently but I could not get it to register on t-mobile LTE network even in areas where Tmob was the leading network.
I am getting pretty tired of onyx... I have other network issues with the recent update.
mpkeith29 said:
If I'm on any rom other than OOS I can use data when roaming (99.9% AT&T tower) but have issues with data on T-mobile. However OOS = no roaming data, but no t-mobile data problems. CM 13 and MM roms are useless for a daily driver. I can't recall which MM rom I tried recently but I could not get it to register on t-mobile LTE network even in areas where Tmob was the leading network.
I am getting pretty tired of onyx... I have other network issues with the recent update.
Click to expand...
Click to collapse
I just installed AOSParadox and have no issues. You can try it if you want MM
Sent from my OnePlus X
falcon26 said:
Just gave up. Went back to Stock recovery and stock ROM and locked my boot loader. Everything now works as intended. Not sure why all 10 ROM's I tried would flash and load fine but I would have no cell signal strange....
Click to expand...
Click to collapse
Never ever re-lock your bootloader, it could bug it out so that you can not unlock it again and/or strange things can happen.
Be glad if you are not affected, but if you unlock it again, keep it that way since it's of no disadvantages to have it unlocked.

V30 & MMS/modem Settings - Trying to figure this out

Hey all. So I'm flummoxed.
I have an LS998 that I Frankenverted to US99820a and then flashed to VS996 20d. Everything had been great, as I've had this setup for probably a month or so without issues. Everything worked fine ... until a few days ago. Although I can't be positive, I know just about the time that I failed the magisk update, I lost the ability to send mms pictures.
I spent the next few days playing around with my settings. I tried Network Settings resets (didn't work), Restoring Default Settings to APNs (kind of worked until reboot) and all sorts of things to try to fix it.
Here's my work flow to give some idea of what I've done and learned.
1. Tried switching message applications. None worked except Verizon Messages while on WiFi, which makes sense since MMS then routes through the internet
2. Restoring Default to APN. This did work to restore my ability to send MMS, however:
a. Every time it rebooted, I lost the ability to send mms​ b. At least one time, I was no longer able to receive messages from my wife (fluke? Unsure)​ c. Regardless, Restoring Default APN after every reboot is not what I wanted to do.​
3. Reset Network Settings...nope.
4. I kdz'd in LGUp back to US998 20a. In US998, everything works perfectly! MMS comes and goes without any problem.
5. Great! KDZ'ing to 20a works, so let's flash VS996 20d, right? Right!
a. Except after flashing from the working US998 20a ROM (KDZ'd) to VS996 20d (TWRP Install), I lost the ability to send MMS again!​ b. Rinse and repeat of LGUP'ing KDZ'ing 20a and flashing 20d in various ways and the same game played out.​
6. Called Verizon and had them look at the account. The guy I was on chat with was amazingly helpful...I explained the entire situation to him in increments without throwing him for any loops and he tried his best on his end to see if there were any weird settings. He updated some things, tried other things, but of course, nothing worked. He's sending me a new SIM card just for the heck of it.
7. All along, I've figured it was APN issues, which I can't figure out where to find or set any default settings for this anywhere, so that's a block on that.
8. This brings us to 8. On a whim, I decided to try the Textra fix that worked for some folks on US998...change to legacy, set limit...but I also noticed an option to Manually Configure APN (for Textra). Ok, I figured, let's try this. So I tick it on and what do I see?
MMSC : https:/mms.sprintpcs.com
Changing this to http://mms.vtext.com/servlets/mms gets Textra to work perfectly.
So now I KNOW it's an APN issue (of sorts) where the Verizon rom has default Sprint mms settings? WHAT?!?!
Recap ... this worked from early August until this weekend, just at or before the time that I updated to Magisk. conicidental? Possibly. Regardless, how can this happen? What am I missing? Shouldn't flashing the VS996_20b rom overwrite the modem? Or so I thought? If it did, then how did it revert?
Regardless, should I just try to update the modem on the V30 using the full Verizon 20b or d KDZ from here:
https://lg-firmwares.com/lg-vs996-firmwares/firmwares/
as others have done in this thread https://forum.xda-developers.com/lg-v30/help/extract-modem-bin-file-vs998-t3802215
Any guidance and insight into what's going on would be greatly appreciated.

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