LS990 gsm user? - G3 Q&A, Help & Troubleshooting

I'm a long time LG user. I've used LS990 in an asian GSM network without any issue. but recently I purchased LS990 phone and unlocked it for GSM networks. But, network capability is strange. Sometimes it detects the sim card. most of the time it doesn't.
"Invalid sim card, please enter a valid sim card" Randomly I get above message.
I'hv tried Fulmics, Tekcafe and cloudy 2.5 which I had zero issues in GSM with my previous LS990. (Tried stock rom with sim unlock methods, no luck)
I barely able to get network, but only for minute. Does anyone know what's the issue? Is it something related with Hardware??
Thanks.

Related

Bell e973 unlocked on rogers...

Can I flash a rogers e971 modem on my unlocked e973? Not sure if the hardware is different (don't want a brick). I just thought signal may be better if I did this
Yup.
Hi Crixley, Everyone,
I have an E973 which was originally a Bell phone. I installed the stock 4.4.2 months ago (http://forum.xda-developers.com/showthread.php?t=2771440) and it worked great. However, today I wanted to give the phone to my brother, so put in his Rogers SIM in the phone, it just says "Searching for Network" and never connections - it detects the network in the "Search Network" options, but says "No Service" if I select Rogers (or any of the other networks). If I put my Bell SIM in, it works immediately and if I put my Rogers SIM in a Xperia X1 or my Nexus 5 it also works right away.
Does anyone have any ideas? I factory reset and wiped the phone to try to resolve it but its made no difference. I also tried installing the E971 modem based on this thread, but also no change to the errors (though my Bell SIM still works fine after the flash).
What it says above suggests it should work - I do not need LTE, just basic phone call/texting service.
Thanks a lot,
Peter

no network available. only getting AWAYs

as the title suggests, i gotten the lg g3 from a guy off kijiji. He was with virgin mobile its d852. i payed to unlock the network and put my WIND sim in. I unlocked the network when there was no sim card. I put my sim card in but the only available networks i was getting is all away.
i swapped the sim thinking it might be that. no luck. i checked to see if this was blacklisted, it wasnt.
im running on cm13.
could this be because the bands are not activated? IF so, i tried following this guide http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059 but it didnt work. i couldnt get the right driver to show up.
Also could it have been impacted by unlocking the network without the sim card in yet?
if someone can help with skype to speed things up for live debugging that would be greatly appreciated. you can add me at [email protected] for skype.
update: so i called wind to see if they can register the phone as on the network and they said they cant put the imei on the account. what does that mean?
Wind needs d852g... Not d852... There is some old threads of people converting the rom and modem to d852g which unlocks the band required for wind.... Search for that, no idea if it works or not tho
Sent from my LG-D852
i had a g3 before and it was d852 and it worked fine...
like i said its d852. i couldnt even flash d852g in.
swapped sim cards with a friend who is also on wind and my g3 couldnt get service but my sim card worked fine on her phone.
another update flashed 852g firmware on my 852 no change. i did so with 852g firmware and 852 dll.
i also flashed 852 tot with 852g dll and still no change in network.
called virgin mobile and they see that the imei is no longer on the account.
this is such a pain does anyone have anything to help??? is there an easy way to view all the bands the phone currently have??
anyone??

sim card.

my vs985 is 1 yr old,rooted,all of a sudden my phone starts this problem with sim card non read..I've kdz,and tot all the way back to 10b,phone works great at10b,then stumproot(xda) and sim cards unreadable,or searching for global reading,it doesn't makeany difference to the setting of global or CDMA etc,after 10 times I still lose sim card when I root,I am on 10b root now however to twrp to jasmine or 47a I lose the sim. I'm staying on 10b root for now as i have no choice,any help is greatly appreciated..
jlb1959.01 said:
my vs985 is 1 yr old,rooted,all of a sudden my phone starts this problem with sim card non read..I've kdz,and tot all the way back to 10b,phone works great at10b,then stumproot(xda) and sim cards unreadable,or searching for global reading,it doesn't makeany difference to the setting of global or CDMA etc,after 10 times I still lose sim card when I root,I am on 10b root now however to twrp to jasmine or 47a I lose the sim. I'm staying on 10b root for now as i have no choice,any help is greatly appreciated..
Click to expand...
Click to collapse
You'll need to flash the 35b bootstack before you flash the ROM for things to work properly on 47a(not sure about jasmine). Read bullet point 5 for a link for the boostack... https://forum.xda-developers.com/ve...t/vs985-46a-stock-flashable-firmware-t3304365
did that.my phone started acting up that my sim was searching for global setting while on 47a for over a year,was giving a suggestion to tot back to stock the start over at 10b,my problem is whether I tot or kdz as soon as I root with stump(from xda site) I get sim non readable and searching for settings.this happens well before I even get to bootstocks,or ROMs.this is while trying to get it rooted on 10b,I've read many people are having a problem with sim cards..obviously tot/kdz gets me to stock with no problem,but trying to get from 10b upgraded is where the sim acts up..
as of now,it works and doesn't work.nothing to do with bootstacks,as I'm on 47a and it didn't work,I rebooted and it did work..then 2hrs later it screwed up again..not sure what it is....
download network settings guru apk and choose bands or *#*#4636#*#*
maybe your problem is something else...
https://forum.xda-developers.com/lg-g3/help/sim-card-t3472164/page3
jlb1959.01 said:
did that.my phone started acting up that my sim was searching for global setting while on 47a for over a year,was giving a suggestion to tot back to stock the start over at 10b,my problem is whether I tot or kdz as soon as I root with stump(from xda site) I get sim non readable and searching for settings...
Click to expand...
Click to collapse
OK...I really need to read more gooder So root is killing your signal somehow. Strange...
Can you grab some logs and post them please? Maybe a log before root when things are working, and one after root with a toggle of airplane mode a couple times to see if it kicks an error into the log and hopefully provide a lil info.
Also, does anything in the "about phone" settings info change after you root/lose service? For ex: unknown baseband, no imei, etc.
yes that's the main problem,I lose ime as well as phone number,and the phone says no sim card,and searching for global setting..if I reboot I may get sim card working but 9 out of 10 times the phone sim is unavailable.example is today,all day the phone worked great,then all of a sudden it lost sim card,no imie,phone number..after pulling battery and rebooting 3 times its working again.I'm on rooted 47a.
+1 For network signal guru, I had to unlock the other bands using that program. It took a few minutes.
It seems that the Verizon variants soft-lock the radio bands.
update this morning,when turning on my phone,it reads sim card searching for global settings,after pulling the battery it reboots and reads sim found,search for settings,global found,and phone works normal??, now if I tot to stock,phone is normal at 10b,then root,twrp etc and sim card will not read,after pulling battery it reads sim searching for global settings,4,5 seconds and phone is OK,then bootstacks,47a and lose sim,then pull battery and go thru the exact same thing,now I've gone to Verizon when sim is unreadable and with a new sim I still get unreadable sim,with no imie,no phone number??...

LG G3 D851 shows full bar signals but no service

Hey guys i'm having some problems with my lg g3 d851, since the screen of my beloved lg g2 died after 2 years and a half, my friend gave me his lg g3 to use it as a tablet since the phone doesnt recognize any signal at all, right now is running the stock rom for android marshmallow, everything works fine except for the signal that either always keeps in "no service", i already try to put another sim card on the phone and its showing the same problem, already checked the IMEI on the swappa blacklist and everything is okay, here are a few screenshots, any thoughts on how to solve this problem would be very appreciated thank you!
Have you modified the APN settings under mobile networks?
kfcherry said:
Have you modified the APN settings under mobile networks?
Click to expand...
Click to collapse
hi thanks for replying, yeah i already modified the APN settings under mobile networks with the APN of my carrier that is IUSACELL (AT&T México) and is still showing the same problem "no service" or "searching"
I had the same problem, try installing another modem, or send me an pm, I have the same mobile company (right now I'm having some problems with the at&t mexico)
I am having a similar problem with my d851 30g. It isvnot rooted and running stock android 6.0 tmobile rom. I am with movistar (mexico) it will have signal and be on the network and then eject the sim saying invalid then reset. Did factory reset. Movistar sim worked for about an hour and then same thing. Have a s from telcel switched and no problem till this Morning. Did the same thing and restarted. Recognized the sim and all fine. I am new to this and could use a little help. As it is connecting with the other sim and not my movistar sim. Possible software issue or corrupted sim?
Thanks in advance,
Alex miller

LG G4 Verizon VS986 27C Says Service disabled.

I bought a Verizon G4 VS986 with firmware 27c and was using it with non verizon sim card it was working fine but suddenly it says service disabled and "sim card is not from verizon wireless" and it stopped reading my sim card. I have tried resetting and changing network mode to Global and CDMA but it didn't work. Please help as the phone is currently unusable.
Satyam171 said:
I bought a Verizon G4 VS986 with firmware 27c and was using it with non verizon sim card it was working fine but suddenly it says service disabled and "sim card is not from verizon wireless" and it stopped reading my sim card. I have tried resetting and changing network mode to Global and CDMA but it didn't work. Please help as the phone is currently unusable.
Click to expand...
Click to collapse
Make sure it didnt get black listed if u bought it from a third party they may have not paid it off or reported it lost

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