Vs980 doesn't connect to LTE anymore - G2 Q&A, Help & Troubleshooting

My two year contract with Verizon expired last week and I'm yet to sign up for a new plan. So currently I'm on the same data plan but on the month to month pricing.
Within 24 hours of my contract expiring, I noticed I can't connect to 4g/lte.I can however get a 3g signal and WiFi is fine. I tried flashing a couple of roms, reflashed bootstacks, and tried playing around with APN settings, but I still haven't been able to get a LTE signal. And it's not the location. I've had no success within a 20 mile radius from my home location.
I don't know if coming out of contract has anything to do with it, buy the timing of it seems to be too much of a coincidence to not consider it.
Any suggestions /tips are much appreciated.

I am having the same problem on my VS980. I have tried a 39A ... KDZ flash.. and still in 3g on the stock rom.
before the KDZ i tried Slim Saber, Cloudy 2.2, Extreme.
Could it be the sim card?
Thanks!
UPDATE:
KDZ back to 24A and 4G is back. I will step it back upto 39A and then get back to XDABBEB's rom. Hope this helps.

Thanks for the update. Glad it worked out for you.
I replaced the Sim card today and no luck. Tried the Sim in another phone and got LTE. So it's not my account. Even tried switching to another 39a bootstack.
Will update after trying 24a tomorrow. Thanks again

Still working great. I didn't try just flashing the boot stack I did a full CSE KDZ flash of the 24A firmware.
If just flashing the bootstack and modem work for you that would be great and you wouldn't have to copy all your files to the computer before wiping the phone. Good luck.

I finally got it working. Ended up flashing the 39a kdz and got 4g back. Lg_root and the 39a freedom tool got me back to flashing roms. Thanks for the direction on going the kdz route.
What I noticed is that if I flashed my TiBu update.zip file to get all my apps back, it puts me in the same situation. I lose 4g. And I have to do the whole thing over again. Ended up downloading all my apps and restoring data from TiBu individually.

Related

Root gets rid of all radio stuff?

I had an issue with Alliance rom. It went from wifi to 4g and I lost the prl and other stuff (said unknown). I only had wifi.
I was able to Odin back to stock. It took like three times as it would not move past the activation screen.
Now, on stock, I flashed TWRP recovering using ODIN, then used the CF root from Odin also. Phone restarted and while I have the 4g logo, I have no phone and the information is missing again (PRL). I do get wifi.
I just used Odin to reflash stock and it is still doing it. I also used the imei tool to restore what I had backed up (EFS). Can anyone help? What is going wrong?
Edit: Phone restarted with root BUT now I cannot make calls (it says roaming) and I am missing the prl and other things again. HOWEVER, I can use wifi, and 4g and no texting also.
If anyone has a clue I'd like to know, thanks.
rlewis312010 said:
I had an issue with Alliance rom. It went from wifi to 4g and I lost the prl and other stuff (said unknown). I only had wifi.
I was able to Odin back to stock. It took like three times as it would not move past the activation screen.
Now, on stock, I flashed TWRP recovering using ODIN, then used the CF root from Odin also. Phone restarted and while I have the 4g logo, I have no phone and the information is missing again (PRL). I do get wifi.
I just used Odin to reflash stock and it is still doing it. I also used the imei tool to restore what I had backed up (EFS). Can anyone help? What is going wrong?
Edit: Phone restarted with root BUT now I cannot make calls (it says roaming) and I am missing the prl and other things again. HOWEVER, I can use wifi, and 4g and no texting also.
If anyone has a clue I'd like to know, thanks.
Click to expand...
Click to collapse
Please somebody has to know something. Give me a clue, help me out please.
Have you tried flashing the stock rom modem?
give some info on what s5 you have, G900F? what stock rom have you flashed?
stalli0nUK said:
Have you tried flashing the stock rom modem?
give some info on what s5 you have, G900F? what stock rom have you flashed?
Click to expand...
Click to collapse
I actually could not find the stock modem. I DID solve it.
1.) Odin back to stock. It will freeze on the activation screen.
2.) Remove sim card after shutting down.
3.) It will get past that and connect with wifi.
4.) THEN clock on roaming to turn it on with sim in.
5.) Phone will then contact US Cellular to "activate and program." It will finish after a few minutes.
6.) Restart and enjoy
In case this happens to anyone else. Thanks for the help (lol). I've had a Droid Eris, HTC DNA, and a Droid Bionic.

No LTE on VS980 through multiple ROMS

Hey guys,
So my Verizon LG G2 hasn't had 4G service for quite some time. I was running the Cloudy ROM and lost it. I flashed different ROMs in an attempt to get it back to no avail. I flashed back to stock through TWRP and still nothing. I came across a thread that gave instructions to flash using kdz or tot files but couldn't get those to work. My phone wasn't being recognized by the programs. I don't have access to another computer to test either so I'm stuck there. I've checked APNs and they all seem fine. I'm getting 3G service just fine and everything else about the phone is great. I'm currently running SlimROM but no 4g still. Anything I can do? Any input is appreciated!
Thanks,
Bewb

Can't get LTE on G900-R4

Hey guys, hopefully you can help me get my S5 back on track.
KLTEUSC G900R4
The story goes:
I've been running CM13. Flashed a nightly, I notice my phone hasn't locked 4G basically all day. 3G only.
So I Odin back to stock using the latest firmware. Phone is still stuck in 3G. Phone does an OTA update to CPF2 baseband version. Still no 4G.
Took the phone to USC store, they provided me with a new SIM. Nothing changed.
I took a trip out of my home area, about 100 miles away I got 4G, but i had no network connection? The phone displayed 4G but i could not connect to any internet. It then dropped down to 3G shortly after and I was able to access data again.
Since then I've flashed back to CM13 (snapshot august 20th release) since if I'm going to be stuck in 3G forever, it might as well be on a ROM that I like.
Please help!
Thanks,
Jeremy.
Bump. Still no LTE.
If I reboot the device, the phone locks LTE for a few seconds, with network connectivity, but then quickly loses it and drops back to 3G. If I leave the phone in LTE preferred, it will run in 3G for most of the time, but occasionally totally lose data (I'm assuming its trying to connect to LTE) then go back to 3G.
Any Ideas?
flash the stock tar.md5 in Odin, reflash TWRP, boot it up fully, boot into recovery, make a NAND, reflash your ROM. Sounds like something got screwed up in the radio firmware
Will that still work even though I can't get 4G when i'm on the stock rom?
$50 reward to whoever can successfully restore 4G LTE to my phone. I've been living on 3G for 6 months and its starting to get to me.
I've been on Lineage OS with the same results. There was a firmware update, so I flashed it through Odin, and ran the stock rom/firmware for about 3 days with the same results. No 4G. Called up the US Cell Tech guys and they were going to check everything over on their end.
The last go round, I repartitioned the phone, did NandEraseAll, and EFS clear.
Any ideas?

What am i doing wrong?

I am having issues getting other rom's to work. I have flashed lineage to my sprint samsung galaxy s5. I have the twrp bootloader installed and thanks to skillsoft tool i was able to get it to actially stick. I did not like lineage primarily because it has issues with lte and my 64gig sd card ( my 16gig worked though despite being significantly slower) So i tried moar rom by downloading it doing a wipe and installing zip. I let it sit for 40 minutes but it stayed on the samsung screen. So i thought ok maybe its the rom, i downloaded aj's a8 2016 port v2 did a wipe and installed it as a zip, same thing. Is there an issue going from droid 7 to these other rom's?
OK, So i was wondering if this is just me. I dont see much mention about this problem browsing the threads. Course i could be missing it. So despite not really wanting to i brought my phone back to factory. The LTE connection came right back which was relieving i thought maybe i screwed something up royally. So i re-installed twrp and flashed ResurrectionRemix-M-v5.7.4-20161121-kltespr figuring maybe its something with the neugat based roms. I still cant get my phone to connect with lte. I switch it to lte prefered, nothing. Switch it to 3g and i can connect. Back to lte still nothing. I am clueless as to what might be going wrong other than maybe its the modem driver?
The factory rom i used was G900PVPU3BOK4_G900PSPT3BOK4_G900PVPU3BOK4_HOME.tar.md5
Any insight on this would be very welcomed.
Well I am a bit confused on this. I took the stock rom and extracted the NON-HLOS and modem bin files. ( thank you 7zip allowing fools like me with windows to do things linux is often used for ) from the stock marshmello rom which i downloaded and previously flashed to my phone and verified it connects with lte. I made a tar with both of them and flashed that via cp on odin and i still can only connect with 3g. I am really not sure whats going on with this.
Ok Turns out not knowing what i was doing basically created a LOT of extra work for me. I use a 3rd party mvno called tello which is great for low cost low usage customers like me. I finally stumbled upon this thread: https://forum.xda-developers.com/general/help/tello-apn-settings-t3409432
Added the tello apn and whala worked like magic, didnt even have to reboot. I had to do this with it set to global. For whatever reason when its set to lte i couldnt add and save a apn. Once i added the apn then switched to lte whala lte connection.

No Cell Service/Modem after flashing dump modem images H910. Advice requested.

Hello XDA,
I recently purchased a H910 from EBAY.
I was able to install Oreo and root it using the excellent tutorials before I was able to have a working sim card on hand so I cannot confirm if this phone was good or bad as I received it. I am using an activated ATT sim card and have used it in another phone with calls, texts, and data working. I have not for the life of me been able to get the any of these features to work on the H910. I have checked the APN settings, I have confirmed both the IMEI number and the sim ID number with ATT. The H910 is able to see the sim card but no mobile network is connected. I can use wifi calling and texting.
I did make a backup/dump of the phone and have flashed the modems, fsg, and misc images with no effect.
I have tried to restore to a stock image of 10q and 20G with the results ending in boot loops so I have not been able to test the stock firmware.
Is there any way to test for a hardware fault?
I would like to avoid returning this phone for something that could be fixed on my end.
Any advice would be greatly appreciated.
MDM3D said:
Hello XDA,
I recently purchased a H910 from EBAY.
I was able to install Oreo and root it using the excellent tutorials before I was able to have a working sim card on hand so I cannot confirm if this phone was good or bad as I received it. I am using an activated ATT sim card and have used it in another phone with calls, texts, and data working. I have not for the life of me been able to get the any of these features to work on the H910. I have checked the APN settings, I have confirmed both the IMEI number and the sim ID number with ATT. The H910 is able to see the sim card but no mobile network is connected. I can use wifi calling and texting.
Click to expand...
Click to collapse
What APN are you using ?
I did make a backup/dump of the phone and have flashed the modems, fsg, and misc images with no effect.
Click to expand...
Click to collapse
This sounds like a hardware failure
I have tried to restore to a stock image of 10q and 20G with the results ending in boot loops so I have not been able to test the stock firmware.
Click to expand...
Click to collapse
are you sure the roms are flashing correctly ? no errors in TWRP ?
I have restored many times with those 2 files and never had a bootloop, flash the 10q or 20G rom then format data before you reboot
Is there any way to test for a hardware fault?
I would like to avoid returning this phone for something that could be fixed on my end.
Any advice would be greatly appreciated.
Click to expand...
Click to collapse
Ive had nothing but great luck getting phones off ebay, but it really sounds like you may have gotten a lemon.
The H910v20 is one of the easiest phones to root and return to stock the 20G rom should work and immediately ask to update to 20H with a AT&T sim in it.
taking the 20G to 20H update will insure you have all the correct modem files and APN.
clsA said:
What APN are you using ?
This sounds like a hardware failure
are you sure the roms are flashing correctly ? no errors in TWRP ?
I have restored many times with those 2 files and never had a bootloop, flash the 10q or 20G rom then format data before you reboot
Ive had nothing but great luck getting phones off ebay, but it really sounds like you may have gotten a lemon.
The H910v20 is one of the easiest phones to root and return to stock the 20G rom should work and immediately ask to update to 20H with a AT&T sim in it.
taking the 20G to 20H update will insure you have all the correct modem files and APN.
Click to expand...
Click to collapse
clsA, Thank you for taking the time to reply, and for your excellent tutorials.
I tried both the stock(default) APN and manually entering the nxtgenphone APN info I was prompted by ATT but no change. Searches for a signal for about 30 seconds and the throws an x over the signal bars. The phone does detect the sim card and shows my phone number.
I do think it is hardware failure. All of the modem problems I have read have an error saying that the radio is off. I do not get this I get a message stating out of service. I also copied the Modem files from another stock H910 20H from a friend and that did not change anything. Their phone also shows signal bars even when the sim card is removed.
I checked the MD5 Hashes and they are correct on the SD card I was using. I saw no errors in TWRP and I tried 3 different flashing combos with both 10q and 20H. The first was to format device and then advance wipe system, cache, and dalvik, then flash, followed by format device. I then tried just format before and format after flashing, and then not formatting before and only formatting after and got the same boot loops with the 3 combos depending on whether I was using 10q or 20g. ie 2 different boot loops with the different zips. Once the boot loop started I could get to the stock recovery to "erase" the phone but that had no change. The only way I found to stop the loops was to flash the 996.kdz file using lgup and start over. The 20H file works perfectly. as does the 10R. It is really odd.

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