Database Users

[Q] Phone restarting and can't connect

HELP! I've been using my LG G2 for around 3 months with mo problems at all. I'm rooted with Janjan's custom rom. This morning my phone froze, so i rebooted it. From then on i could not connect to my mobile network as well as Wifi networks. I can see the phone is also scanning the media files, and i cannot open any programs. The phone then restarts itself after about 20 seconds. If i turn the screen off, i cannot turn it back on.
I have already tried restoring to a backup i had on CWM, but the same thing happens.
Has anybody experienced this before? Any suggestions on what to do????
Thanks!
**Edit.
Was able to snap this pic before it rebooted on me again. The "Error" message, stays on even if i exit Settings.

Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.

MalignantQuechnitlan said:
Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.
Click to expand...
Click to collapse
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.

djlpio said:
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.
Click to expand...
Click to collapse
Hmm, that is odd. Do you have a back up of the phone before you changed anything? i.e. a stock backup?
because it seem you may have wiped your EFS partition by accident.

No i don't have any backups, The only back up i had was a stable version of the ROM i was using. And it seems like when i reverted back to stock, all the files in the internal memory is erased as well.

[q] stuck in bootloop sprint ls980 please help!!!!

OK to start off i am not a noob at this, i have read though the forms and cant seem to find out why my phone will not come out of this bootloop. This started happening 2 days ago when I went to install a new rom on my phone. I powered down my phone, put it in recovery (Twrp), I wiped everything but internal storage. I then processed to flash the new rom. Everything went great. My phone rebooted and worked fine for the first 1 min, when i tried to pull down the notification bar the phone stuck off and went into a bootloop. I then tried to go back to my old rom and had the same problem (notification bar would not pull down). So i went to plan B and used the Back To Stock Form to restore the phone back to stock. The process went smooth as well not a problem at all. When the phone started up it allowed me to set up the voice navigation and name of the phone, as i went to update the prl and profile the phone shut off again, when it turned back on it starts normally and the goes to the lock screen where i am unable to make any iterations with the screen at all besides when it turns the blacklight off, as i try to use the knock on the LED light turns white but the screen will not turn back on (not even with the power button). Then it reboots to the lockscreen again and continues to do it until i manually force it off. I have tried everything from redownloading the firmware files, tried back to stock 3 times, hard factory reset, and reset in recovery mode. My phone is back to stock but i am unable to do anything with it unless i factory reset and go though the set up again, but even then i cant get a connection (even with wifi) without the phone shutting off and rebooting. Everytime the phone reboots the time reads 12:00am and switches to 12:01 really quick. I cant get a connection at ALL (I EVEN TRIED REMOVING THE SIMS AND AND PUT IT BACK IN AFTER BACK TO STOCK PROCESS.)
Im not sure if the application Dr.Web could possibly be making my phone do this. I did have it installed and did not remove before I tried to switch to the new rom. The anti-theft part was active.
SOMEONE PLEASE BE MY HERO AND HELP........I REALLY WOULD HATE TO DEAL WITH LG ON THIS ISSUE IF I CAN FIX IT MYSELF
THANKS TO EVEYONE THAT SUPPORTS AN ANSWER

Sshaffer1992 said:
OK to start off i am not a noob at this, i have read though the forms and cant seem to find out why my phone will not come out of this bootloop. This started happening 2 days ago when I went to install a new rom on my phone. I powered down my phone, put it in recovery (Twrp), I wiped everything but internal storage. I then processed to flash the new rom. Everything went great. My phone rebooted and worked fine for the first 1 min, when i tried to pull down the notification bar the phone stuck off and went into a bootloop. I then tried to go back to my old rom and had the same problem (notification bar would not pull down). So i went to plan B and used the Back To Stock Form to restore the phone back to stock. The process went smooth as well not a problem at all. When the phone started up it allowed me to set up the voice navigation and name of the phone, as i went to update the prl and profile the phone shut off again, when it turned back on it starts normally and the goes to the lock screen where i am unable to make any iterations with the screen at all besides when it turns the blacklight off, as i try to use the knock on the LED light turns white but the screen will not turn back on (not even with the power button). Then it reboots to the lockscreen again and continues to do it until i manually force it off. I have tried everything from redownloading the firmware files, tried back to stock 3 times, hard factory reset, and reset in recovery mode. My phone is back to stock but i am unable to do anything with it unless i factory reset and go though the set up again, but even then i cant get a connection (even with wifi) without the phone shutting off and rebooting. Everytime the phone reboots the time reads 12:00am and switches to 12:01 really quick. I cant get a connection at ALL (I EVEN TRIED REMOVING THE SIMS AND AND PUT IT BACK IN AFTER BACK TO STOCK PROCESS.)
Im not sure if the application Dr.Web could possibly be making my phone do this. I did have it installed and did not remove before I tried to switch to the new rom. The anti-theft part was active.
SOMEONE PLEASE BE MY HERO AND HELP........I REALLY WOULD HATE TO DEAL WITH LG ON THIS ISSUE IF I CAN FIX IT MYSELF
THANKS TO EVEYONE THAT SUPPORTS AN ANSWER
Click to expand...
Click to collapse
god that is really hard to read...did you make a back up before you do installation? if so do a restore, if you dint, download another rom, kernel, put it in your phone, wipe everything except internal storage via TWRP then flash rom then kernel.

G1_enthusiast said:
god that is really hard to read...did you make a back up before you do installation? if so do a restore, if you dint, download another rom, kernel, put it in your phone, wipe everything except internal storage via TWRP then flash rom then kernel.
Click to expand...
Click to collapse
lol sorry i wanted to be as pacific as possible. I did make a backup before flashing the rom. when i tried to go back to it i had the same problem with it rebooting after a few mins. i tried flashing furnace 0.0.8 kernel after installing a fresh rom but same problem. I am back on factory recovery atm is there anyway to flash twrp back to the phone without it being rooted? i tried to get the computer to communicate with the phone when it turns on but it wont seem to connect unless im in download mode or recovery.

Sshaffer1992 said:
lol sorry i wanted to be as pacific as possible. I did make a backup before flashing the rom. when i tried to go back to it i had the same problem with it rebooting after a few mins. i tried flashing furnace 0.0.8 kernel after installing a fresh rom but same problem. I am back on factory recovery atm is there anyway to flash twrp back to the phone without it being rooted? i tried to get the computer to communicate with the phone when it turns on but it wont seem to connect unless im in download mode or recovery.
Click to expand...
Click to collapse
so the phone turn on? try enable debugging in developer option, sometimes that works for me, not sure why.

Solution?
Sshaffer1992 said:
OK to start off i am not a noob at this, i have read though the forms and cant seem to find out why my phone will not come out of this bootloop. This started happening 2 days ago when I went to install a new rom on my phone. I powered down my phone, put it in recovery (Twrp), I wiped everything but internal storage. I then processed to flash the new rom. Everything went great. My phone rebooted and worked fine for the first 1 min, when i tried to pull down the notification bar the phone stuck off and went into a bootloop. I then tried to go back to my old rom and had the same problem (notification bar would not pull down). So i went to plan B and used the Back To Stock Form to restore the phone back to stock. The process went smooth as well not a problem at all. When the phone started up it allowed me to set up the voice navigation and name of the phone, as i went to update the prl and profile the phone shut off again, when it turned back on it starts normally and the goes to the lock screen where i am unable to make any iterations with the screen at all besides when it turns the blacklight off, as i try to use the knock on the LED light turns white but the screen will not turn back on (not even with the power button). Then it reboots to the lockscreen again and continues to do it until i manually force it off. I have tried everything from redownloading the firmware files, tried back to stock 3 times, hard factory reset, and reset in recovery mode. My phone is back to stock but i am unable to do anything with it unless i factory reset and go though the set up again, but even then i cant get a connection (even with wifi) without the phone shutting off and rebooting. Everytime the phone reboots the time reads 12:00am and switches to 12:01 really quick. I cant get a connection at ALL (I EVEN TRIED REMOVING THE SIMS AND AND PUT IT BACK IN AFTER BACK TO STOCK PROCESS.)
Im not sure if the application Dr.Web could possibly be making my phone do this. I did have it installed and did not remove before I tried to switch to the new rom. The anti-theft part was active.
SOMEONE PLEASE BE MY HERO AND HELP........I REALLY WOULD HATE TO DEAL WITH LG ON THIS ISSUE IF I CAN FIX IT MYSELF
THANKS TO EVEYONE THAT SUPPORTS AN ANSWER
Click to expand...
Click to collapse
I had the same problem except with me, i was just trying to change fonts manually. It went into a bootloop and i stressed dover it for hours until finally i found out that you have to use the lg mobile support tool (you can find it in one of these threads on the lg g2) and revert it back to stock. That fixed it perfectly fine. Its a lengthy process but simple. If that doesn't work you have to do what the lg mobile support tool does semi-manually with another program lg flash tool which is longer but just as simple if you follow the directions given in the thread to the letter.

androidfantic32 said:
I had the same problem except with me, i was just trying to change fonts manually. It went into a bootloop and i stressed dover it for hours until finally i found out that you have to use the lg mobile support tool (you can find it in one of these threads on the lg g2) and revert it back to stock. That fixed it perfectly fine. Its a lengthy process but simple. If that doesn't work you have to do what the lg mobile support tool does semi-manually with another program lg flash tool which is longer but just as simple if you follow the directions given in the thread to the letter.
Click to expand...
Click to collapse
I tried the lg flash tool and it put my phone back to stock but still have the same problem. I also tried lg mobile support tool but it will not recongize my phone. I did happen to get into settings and seen that both my imei and baseband are unknown. Could this be causeing the proble m? is there any way to fix it?

G1_enthusiast said:
so the phone turn on? try enable debugging in developer option, sometimes that works for me, not sure why.
Click to expand...
Click to collapse
Yes my phone turns on but doesnt stay on for long it will freeze and reboot i noticed my imei and baseband are unknown. Any idea what can be causeing that to happen? Could it cause the phone to reboot like it is? I am back on stock firmware again,. I did try debugging but still no luck, i was even luck enough to root it again before it rebooted but still didnt help.

Sshaffer1992 said:
Yes my phone turns on but doesnt stay on for long it will freeze and reboot i noticed my imei and baseband are unknown. Any idea what can be causeing that to happen? Could it cause the phone to reboot like it is? I am back on stock firmware again,. I did try debugging but still no luck, i was even luck enough to root it again before it rebooted but still didnt help.
Click to expand...
Click to collapse
**** thats not good at all. This happen when I was using my S3, if IMEI is gone then you could not use the phone at all, theres no way you can get it back unless you made a back up. you have to sent it in man, sorry this is as good as hard brick.

G1_enthusiast said:
**** thats not good at all. This happen when I was using my S3, if IMEI is gone then you could not use the phone at all, theres no way you can get it back unless you made a back up. you have to sent it in man, sorry this is as good as hard brick.
Click to expand...
Click to collapse
My friend also has a lg g2 that i rooted for him would i be able to use a backup from his phone. Also when i turn the phone conpletely off and hold down all 3 bottons it brings me to a hardware key settings it does shows my imei number there. If i sent it into lg would they know the phone was once rooted or does the back to stock method cover it up? Thanks for your help btw

Sshaffer1992 said:
My friend also has a lg g2 that i rooted for him would i be able to use a backup from his phone. Also when i turn the phone conpletely off and hold down all 3 bottons it brings me to a hardware key settings it does shows my imei number there. If i sent it into lg would they know the phone was once rooted or does the back to stock method cover it up? Thanks for your help btw
Click to expand...
Click to collapse
they have coders there, I'm sure if they really want to know they can figure it out. If you send it in to get it fix out of your own pockets (meaning you pay them) then i'm sure they dont care, but if you want a replacement due to warranty then it may be a different story.

Sshaffer1992 said:
Yes my phone turns on but doesnt stay on for long it will freeze and reboot i noticed my imei and baseband are unknown. Any idea what can be causeing that to happen? Could it cause the phone to reboot like it is? I am back on stock firmware again,. I did try debugging but still no luck, i was even luck enough to root it again before it rebooted but still didnt help.
Click to expand...
Click to collapse
That suck bro I'm facing the same issue right now hope you got it repaired if so feel free to share the process lol

Nba2kgod said:
That suck bro I'm facing the same issue right now hope you got it repaired if so feel free to share the process lol
Click to expand...
Click to collapse
I eneded up restoreing my phone back to stock and took it into my local sprint store it cost ne 75 dollars to replace the phone not under warranty (if u have sprint protection its free) i told them i took and ota update and it started rebooting itself. If you do get a replacement make sure u back up your efs files to a safe place on your phone. Theses files can become corrupted by flashing roms and kernals.

Sshaffer1992 said:
I eneded up restoreing my phone back to stock and took it into my local sprint store it cost ne 75 dollars to replace the phone not under warranty (if u have sprint protection its free) i told them i took and ota update and it started rebooting itself. If you do get a replacement make sure u back up your efs files to a safe place on your phone. Theses files can become corrupted by flashing roms and kernals.
Click to expand...
Click to collapse
Not under warranty? Doesn't it have a 1 year manufacturer warranty? The G2 wasn't released on Sprint until November last year so it should have been covered.
Sent from my LG-LS980 using Tapatalk

Yes its still under manufacturer warranty but when i made a repair order with lg it said it would take 2 to 3 weeks to get my phone back and if they found out it was due to being rooted and flashing roms im sure lg would of charged a arm a leg to repair it. With sprint i got a new phone in 2 days or ordering it.

Unable to use as a phone after reflashing

Ugh, I've been flashing since the HTC Touch Elf but I'm finally stuck.
I was using Bobcat, but it wasn't keeping the 3g when the screen turned off, post v13. So I flashed Phoenix which had a troubleshoot for that - which I followed and it worked. Flash the new modem zip using Odin. Thing is, without realising I didn't allow it to finish. I booted up and 3g remained connected fine, so "obviously" it worked, though I never tried to call in or out last night.
I got a voice mail this morning and found I couldn't hear anything during a call - which took forever to connect. Figuring a slow rom, I downloaded and flashed Foxhound - still no calls. So I try the modems again, letting it sit for a few extra minutes until Odor says Pass. But it still doesn't work... It's also quite slow, as Phoenix was.
Any help?

Flash the stock rom again via odin.
Get the stock rom from sammobile
Sent from my GT-I9500 using XDA Premium 4 mobile app

Not what I'd like to do, but I'll give it a try. Downloading now.

I've done it and it still doesn't work. And the camera also doesn't work... Although the camera thing only started after I flashed the I9505XXUFNC9_GSM_LTE_Modems. Not sure that would be the reason for it to work or not, but that's what happened.
I've tried the above modems and I9505XXUFNB9_GSM_LTE_Modems, flashing other firmware in recovery and reflashing the original firmware using Odin.
Have I completely naffed my phone?

Oh, and also the wifi doesn't work since returning it to EE's latest firmware...

Nobody have any ideas?

I had a similair problem. I assume you are still on the old bootloader?
This is what I did:
1. Full wipe in cwm
2. Advanced wipe > wipe /system (this will wipe everything, so it also wipes your sd card).
3. Flash the phoenix rom
4. Flash the modem (I use MJ5)
5. Make sure the modem actually flashed. Check it in settings > general > phone information.
That did the trick for me. Make sure you have proper backups and also a good backup of your efs.

As I didn't have Wifi I had to install Clockworkmod Recovery via Odin. So I wiped everything, but the option was to wipe Cache, wipe System and wipe data. There was also wipe data and data/ (SD card), but I didn't do that one as I don't think the problem was down to the memory card. I flashed Foxhound, as that's what was on my memory card already, put the XXUFNC9 modem on using Odin and booted up. It now connects to 3G and wifi.
However, I tried to call my house and it took about 30 seconds to connect, then when my wife picked up neither of us could hear each other. So it still doesn't work...
When going into download mode, it doesn't say anything about Knox, so yes I'm on the old bootloader still. I don't have a backup of my efs, but I have a complete backup of everything from using Titanium Backup before I tried flashing away from Bobcat.
I noticed something very strange. When I go to About and Phone Information, the phone number shown isn't my number. The number that showed up on the house phone was my correct phone number. Is this related?

Acelister said:
As I didn't have Wifi I had to install Clockworkmod Recovery via Odin. So I wiped everything, but the option was to wipe Cache, wipe System and wipe data. There was also wipe data and data/ (SD card), but I didn't do that one as I don't think the problem was down to the memory card. I flashed Foxhound, as that's what was on my memory card already, put the XXUFNC9 modem on using Odin and booted up. It now connects to 3G and wifi.
However, I tried to call my house and it took about 30 seconds to connect, then when my wife picked up neither of us could hear each other. So it still doesn't work...
When going into download mode, it doesn't say anything about Knox, so yes I'm on the old bootloader still. I don't have a backup of my efs, but I have a complete backup of everything from using Titanium Backup before I tried flashing away from Bobcat.
I noticed something very strange. When I go to About and Phone Information, the phone number shown isn't my number. The number that showed up on the house phone was my correct phone number. Is this related?
Click to expand...
Click to collapse
I had the same problem as you had. The procedure that I descriped fixed them for me. My guess is there are some files on your sd card that somehow interfere.

I will try doing the same again, but with a different formatted memory card.

Flashed the new bootloader, problem solved.

Phone connected but no internet

Hi everyone,
i am having a SM-G900F (it is t-mobile). It is on stock lollipop LRX21T.G900FXXU1BNL9 with modem and bootloader BOB7 (which i flashed a week ago).
I have problems since the last 2-3 days, my phone is connected to a working WiFi or mobile data and everything seems alright, but it isn't, i don't have any internet access. I have to turn of WiFi or mobile data and turn it on and eventually it starts working again :S
Does anyone has an idea what the problem may cause and how should i fix it? Thanks in advance
EDIT: Also if i take out the battery of my phone and turn it on afterwards, it turns off but with a black screen, and i get a "System fc", and i have to try to turn it on a few times to get it work like it should, but if i turn off the phone without taking out the battery it turns on just fine everytime

First thing Id try is clearing CACHE from Recovery
Did you factory reset after updating to Lollipop from KK? It is needed to get rid of left over bugs / files from KK

*Detection* said:
First thing Id try is clearing CACHE from Recovery
Did you factory reset after updating to Lollipop from KK? It is needed to get rid of left over bugs / files from KK
Click to expand...
Click to collapse
When i bought the phone (used) it already had lollipop on it. I tried clearing cache+dalvik cache but still the same, but didn't tried a factory reset, right now i am downloading a custom rom, will wipe everything and see what happens after that.
Some strange thing that i noticed is, that the internet now won't work for any app escept for viber, on viber it works without problems

Right now i have flashed another ROM with wipe-ing everything before and i have still problems with the internet :S
i don't know what do to now :/
EDIT: Data is working, but wifi connects but no internet :/
EDIT2: I've found out what the problem is, it wasn't my phone, it was some weird virus which changed my routers DNS settings

Phone not connecting data

Hey everyone, let me start off that I love XDA and I have been using this site for years! So let me give you a little history. I am still on 4.4.4. Recently I finally updated it to 5.0 and retained root, sweet! I also had a custom lollipop recovery that allowed me to go back to 4.4.x. However, I needed the wireless tether function and I could not find a way to get it unlocked without flashing some mod (which would brick my phone) so I used ODIN to flash back to a rootable tar image that I have always used. It was 4.4.2 on NI2 Kernal. Now normally, no matter how many times I ODIN'ed it, flashed it, restore a backup, everything would be up and running in no time. However, lately my phone has not been able to connect to the network completely for some reason. I can make/receive calls and texts. Anything using data though would not work. I called Verizon to see if they could reset something from the back end and they saw me and connected and running. Needless to say, their help ended almost immediately. I am currently running Ricks ROM v19.2 G900VVRU1ANI2 and was only able to connect to data one time a couple of days ago. I had to restart though and when it booted back up, it lost the data again. It does show that I am connected to 4G LTE, strong signal. I have tried the stock ROM 4.4.2, fresh install of Ricks ROM, restore my backup of Ricks Rom (maybe two weeks old), tried Eclipse ROM, nothing seems to be working. I've never submitted anything on here asking for help so this is a first for me cause normally I can fix any problems I create, however, I cannot figure this out for the life of me. Does anyone have any suggestions that I can try? Thanks in advance!
Nic