Hi Guys, I have a E988 HK version 10D Stock Rom. I found the signal is not stable at all.
As my mobile carrier does not support 4G, so have seleted the network to 2G/WGCDMA.
I found the phone lost signal completely and then it has an error saying sim invalid, but when I reboot the phone, the signal became good again. This is very painfu as I needed to reboot my phone a few times a day.
Can someone give me an idea please? Thanks.
Sounds like modem problem try to install a different stock rom or a new modem
I had the CM11 rom...flashed the Vanir rom and since have not been able to get any network. I made a backup before and reverted to that backup but now theres no network even in CM11...I am using the LG F180S...Help please :\
neaznc021 said:
I had the CM11 rom...flashed the Vanir rom and since have not been able to get any network. I made a backup before and reverted to that backup but now theres no network even in CM11...I am using the LG F180S...Help please :\
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I had similar problem.
I'm on E975 and I was able to get networks connecting manually because LTE is on by default (but it was always droping)
After changing to 3G no more problems. Have you tried this?
P.S. I never tried to solve the 4G issue but probably I need to change APN settings.
rimsilva said:
I had similar problem.
I'm on E975 and I was able to get networks connecting manually because LTE is on by default (but it was always droping)
After changing to 3G no more problems. Have you tried this?
P.S. I never tried to solve the 4G issue but probably I need to change APN settings.
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Mine doesn't even recognize the network. Can't even search for it manually. I reflashed the KDZ and flashed the baseband still no network :\
Don't understand what you mean... after reboot you get any message? What do you have in status bar? the red cross over the signal icon?
That what I was getting...
You can't go to setting - more - mobile networks - network operators and seach networks? Why, it's grey?
rimsilva said:
Don't understand what you mean... after reboot you get any message? What do you have in status bar? the red cross over the signal icon?
That what I was getting...
You can't go to setting - more - mobile networks - network operators and seach networks? Why, it's grey?
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Click to collapse
Yeah I;m getting the red cross. When I was in CM 11, I tried searching for networks manually but it would just be a loop. So I reflashed the LGF180S KDZ and I am back to stock. Still I have the red cross and the stock rom does not allow to search for networks manually.
neaznc021 said:
Yeah I;m getting the red cross. When I was in CM 11, I tried searching for networks manually but it would just be a loop. So I reflashed the LGF180S KDZ and I am back to stock. Still I have the red cross and the stock rom does not allow to search for networks manually.
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I'm with E975 stock ROM and I have the options to search network, as I mention above and you should have too.
The problem here could be that it's grey and you are not allowed to do it, but the option is there, is that your case?
I'm not sure if I had that before (you know so many flashes...) but I've always solved my issues by restoring to a previous works ROM. I remember that I got GPS issues too and I restore a ROM backup.
I believe that I can't help more
flash baseband and you're done
and8eye said:
flash baseband and you're done
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Click to collapse
tried and didn't work...Had to flash e975 kdz and flash f180s modem through CWM
me also have the samr problem.where to het naseband?
Sent from my LG-E975 using xda app-developers app
This post may help yu... Use it as reference
http://forum.xda-developers.com/showthread.php?p=47101752
Sent from my LG-E975 powering Stock 4.1.2
first if you read a little and ask in the Vanir rom thread if you can't see which of the 2 roms are for your phone, you need to have the correct modem flashed to the rom aswell, plus using the right APN's or else you can have network trouble.
i am running stock CM11 on my own E975 and it don't have any mobile network when i do a reboot or a cold boot, but then i go in and search for network and all networks in my country shows up, and i just choose the one i want and i get 3g/4g LTE no problem there
I've been having issues with my E971 on Rogers ever since I tried to flash an E975 ROM on it some time back. The phone is unable to connect to the network and shows 'Service Disabled'. I am unable to manually add an APN or search for networks. If I take the SIM out of the phone it shows my IMEI but if the SIM is in the phone it shows as null.
I used a KDZ to go back to the stock Jelly Bean version of Android and still had the same issue. I thought it might be an issue with the modem so I rooted the phone and flashed houstonn's Rogers JB modem and still couldn't solve the issue. If I flash the ICS modem on the 4.1.2 ROM I'm able to connect to the network but WiFi doesn't work. I tried installing various different AOSP based custom firmwares and was able to get data using the ICS modem but again no WiFi. Using the JB modem on an AOSP ROM would give be an external modem(undefined) subsystem crash. At this point I got my hands on a stock ICS bin file for the E971 and flashed it using LGNPST. On 4.0.4 both my data and my WiFi worked so I backed up my EFS manually using adb and ran the OTA updates on the phone. Unfortunately once I had updated to 4.1.2 the network stopped working and once again I got the 'Service disabled' messaged. Manually restoring my EFS didn't solve the issue.
It seems that for some reason my phone is unable to work with the JB modem. I find it odd that after restoring to stock the OTA would end up breaking it like that. I'm not sure if I'm backing up and restoring the EFS wrong or if the phone is just broken in some way. Any help would be greatly appreciated!
Actually i lost my network after flashing custom rom(it might have caused bcoz of installing downgraded rom)..causing not registered on network issue....than i flashed patched modem for n7100 than the problem was gone and my new modem was N7100XXUFND3....BUT MY PROBLEM NOW IS IT USES LOT OF MY BATTERY..when i put my phone on flight mode..than it is okk....i m from india my default modem was N7100DDUFND1...WHICH I GOT IT ON INTERNET BUT IS NOT PATCHED...HOW CAN I FIX THIS ISSUE ????
Hi.
I got problems with signal drops every 10 sec or so.
So I tried to flash 21C, 21A and 20P modem without any luck.
Was first when I also flashed RPM/TZ my signal drop problem was solved.
But, I got a new problem.
I can't get any connection on LTE.
It's like I'm not allowed on the LTE-network, its grayed out with a !.
No problem with surf on GSM and UMTS/WCDMA.
Using TurboRom.
Do I need to try this?
http://forum.xda-developers.com/lg-g3/general/request-3g-2g-lte-d850-t3300908
Or is it some other solution?
I installed RR custom rom and now LTE works.
I guess I just needed to flash the modem a second time.