Bootloop and data privacy - G4 Q&A, Help & Troubleshooting

Hi,
so i am in a bit of a conundrum.
I have a LG G4, that suddenly got in a BOOTLOOP. I have tried putting it in the freezer among other tricks, without luck.
So it looks like i need to send it to the repair shop.
However, i have some sensitive data on the phone that i would not like to get in the hands of others.
I am unable to do a factory reset, it just starts the loop again.
The phone has a passcode to enter, will this be sufficient?
If not what can i do?
Thx.

Related

Weird problem

Hi guys, I'm having this WEIRD WEIRD problem after messing around with the phone.
Here's what happened:
2 days ago, I received the phone. After unboxing it and playing with it for like 10 minutes, turning it on and off often, messing round with the features. Then, the phone rebooted by itself. After that, boot loop. It'd get stuck at the green HTC screen forever. I have no idea what happened, so I tried factory reset. Didn't work. Recovery, also stuck. So I brought it home and looked into rooting/flashing.
Now, the phone is running RUU_Bravo_hTC_Asia_WWE_1.19.707.7_Radio_32.36.00.28U_4.06.00.02_2_release_126179_signed. SOMETIMES, the phone would boot in and I would be able to use it, but most often it'd just keep restarting and then hang at the green HTC screen, or maybe get the quietly brilliant and then restart.
What should I do? I have the RUU for 1.19.707.6, but with that RUU, it keeps saying that it can't see my phone. Sigh.
I can get into fastboot, but no guarantee after that. What should I do? Can't bloody swap it, coz I imported it
trandoanhung1991 said:
Hi guys, I'm having this WEIRD WEIRD problem after messing around with the phone.
Here's what happened:
2 days ago, I received the phone. After unboxing it and playing with it for like 10 minutes, turning it on and off often, messing round with the features. Then, the phone rebooted by itself. After that, boot loop. It'd get stuck at the green HTC screen forever. I have no idea what happened, so I tried factory reset. Didn't work. Recovery, also stuck. So I brought it home and looked into rooting/flashing.
Now, the phone is running RUU_Bravo_hTC_Asia_WWE_1.19.707.7_Radio_32.36.00.28U_4.06.00.02_2_release_126179_signed. SOMETIMES, the phone would boot in and I would be able to use it, but most often it'd just keep restarting and then hang at the green HTC screen, or maybe get the quietly brilliant and then restart.
What should I do? I have the RUU for 1.19.707.6, but with that RUU, it keeps saying that it can't see my phone. Sigh.
I can get into fastboot, but no guarantee after that. What should I do? Can't bloody swap it, coz I imported it
Click to expand...
Click to collapse
sounds like a h/w problem to be honest
Is it possible that this is a firmware problem? I'd hate to have to send it back for repairs, cost a lot.
I did the heap-test command, and everything is ok. So where could the problem be?. Can't even boot using fastboot oem boot. Any ideas?
PS: I think I have the correct RUU for my phone. Always complete without a hitch.

G4 Bootloop

Hi Guys,
i am really confused and a little bit angry. The Following happened to me today:
My Phone (Unrooted, Locked BL) was behaving weird this morning.
It just randomly crashed and wouldn't boot up.
Eventually i got it to boot once or twice, but still it crashed, shut down and Bootloop.
A Reqular Factory Reset did nothing. now i'm trying to install the Regular KDZ-File for the H815, but things are just not working as expected.
Has anyone else had this problem before?
Is it normal that the LG Flash Tool is on 1% for over 5 Minutes and nothing changes on the Phone screen?
I want to know what has broken my phone so bad, cause this time, I just used it the way it was supposed to be used, no hard drops, no rooting, no changing of software in any means.
First LG Phone and it broke with no warning and no explenation. I'm a little disappointed right now.
Greetz
Esok
Same
The same happened to mine. Are you able to get to download mode by powering off your phone and plugging it into your computer? Im able to flash stock ROMs but nothing helps. The phone reboots by itself at random times and makes it into the operating system a few times but is never usable.
martinsavvy said:
The same happened to mine. Are you able to get to download mode by powering off your phone and plugging it into your computer? Im able to flash stock ROMs but nothing helps. The phone reboots by itself at random times and makes it into the operating system a few times but is never usable.
Click to expand...
Click to collapse
Hey,
yes i can get into download mode.
I am able to flash files, but the phone wont boot up anymore.
I just want to save my data, but i guess i wont be able to do so.
So i have to get to the store and get a new g4
Luckily i made a backup of my two weeks ago, so not much will be lost.
I also send an email to the LG customer Service, will post their reply here too.
I am really disappointed by LG at this point, i usually had motorola phones and they didn't have random errors like this one.
I switched to LG, cause G4 sounded awesome, but this error is making me sad.
I am really thinking that i won't buy another LG Product, which is making me sad too, cause usually most things made by them are great.
Greetz Esok
//==============First Request by me:======================
Hello dear LG-Service Team,
i just bought the premium product LG-G4.
Since some days, the Phone is beginning to hang and reboot, resulting in a bootloop.
Sometimes the phone boots, than optimizing Android for about 30 minutes (100+ Apps installed). After this happened, i kann use it again, but not fully.
To shortcut eventual questions:
The Phone is in factory State, no Custom Rom installed. The bootloader is locked and the Phone has not been rooted.
The mistake seems to come from your firmware.
I am really disappointed, because i paid a lot of money and no have a product which is barely usable.
I switched to LG because of the G4 and i don't want to regret this decision.
Kind regards
<<Esok>>
//=========================Reply======================
Dear Mr. <<Esok>>
thanks for Contacting LG-Electronics Germany
We regret the problems you have with your smartphone.
Probably the reason is a Update-Error in the Google Play Services.
To check this, start your device and activate ariplane mode.
in Settings ->Apps->All-> Google Play Services coose Uninstall Updates.
Afterwards turn airplane mode off.
Android will update the Google Play Services with a working Version.
If this is not working and your Phone is in Warranty, you got the possibility to send in the Phone, for a free Hard- and Software Check-up.
To trigger this process, please send us the following data via Email:
Phone Number, name, Adress, Buy date, Imei-Number, Serial Number, Modell, Color and a detailled Description of the Error.
After getting your data, we will send you an reply formular via email, with which you can send in the phone for free.
Please print the Coupon and go to you next mail station.
Please pack the device secure and put the Battery, a copy of the bill and a description of the error in the package too.
You can also bring the Phone to the retailer.
The average time for a repair is 5 Days.
You can also call us on 01806115411 to get contact and boost the process.
I hope i answered all your quetions.
kind regards
<<Lg-Customer Service>>
//===================================================================
Email and response, translated by me, so there might be some mistakes...
I don't like the response, it feels like not being taken seriously.
Well, nevertheless, i will go to the retailer and will see what happens.
I will keep you updated.
What do you think of this response?
Greetz Esok
That response is terrible lol. I called in and they said they do not support my phone because it is an international version. So there was nothing they could do for me.
I have a similiar issue, but mine was due to a OTA update, and I didn't know about the download mode until now.
Thanks.
Any tips when I can get into the download mode? I just wanna recover my personal data (images, and texts)? Flashing STOCK image would preserve the personal data right?
While your phone is off, plug it into your computer while holding volume up. If you are using LG flash tool to flash a .KDZ firmware file, you will come across an option that says Normal flash or CSE Flash. Normal flash will not wipe data, while CSE Flash will. I have flashed stock images and it didn't work. Hopefully it works for you though.
martinsavvy said:
That response is terrible lol. I called in and they said they do not support my phone because it is an international version. So there was nothing they could do for me.
Click to expand...
Click to collapse
+1 I'm in same boat and exact same issue with my H815. I love the device but this is unacceptable.
I'm having the same problem, it just happened to me all of a sudden and now I can't even get to the boot animation. I've been able to get into recovery 2 or 3 times but usually it just restarts before it even gets there. I recently updated to the newest xposed framework (though I've restarted just fine a few times after I installed it), did anyone else here do the same?
When I get home from work I'm going to keep attempting to fix it, I've flashed my current TOT but it failed after rebooting. I don't know if I'm having the same problem as everyone else but I'll update if I can find a solution.
same issue here on the at&t 810. Starting about 3 days ago I started getting random reboots + bootloops. Sometimes it would boot to the LG logo and stick, sometimes to the AT&T logo and stick, sometimes to the OS and freeze after the lock screen appeared. I can get into the OS and use it for awhile, then it will restart and it all begins again. 2 factory resets so far and no dice. I am rooted on 10e but have a warranty device on the way which undoubtedly will be on a higher firmware and will likely miss out on the potential coming bootloader unlock. At this point I am probably going to sell on craigslist and get a 6p. The phone is great when it works and I love the size, the looks, and the screen, but the lag and these reboots are unacceptable.
Just a short update by me:
I gave it to the retailer, they said it would take about 10 Days.
I hope this stuff won't happen again or this was the last time i am buying a LG Product.
I think i would have been better off by sending it directly to LG but nevertheless, maybe giving it to the retailer will make my warranty stay longer
I will keep you updated, including firmware Version the phone has after sending it in and so on.
All of the sudden my phone today just froze leaving me with a black background and no animations, the phone is very hot if I try to use it on that moment. Even when I reboot the phone stays very very slow and says system it's no responding.
What can I do? Even when a Reboot it some times works normal then suddenly does it again.
atrix_noob said:
All of the sudden my phone today just froze leaving me with a black background and no animations, the phone is very hot if I try to use it on that moment. Even when I reboot the phone stays very very slow and says system it's no responding.
What can I do? Even when a Reboot it some times works normal then suddenly does it again.
Click to expand...
Click to collapse
Sounds like a heat problem in your case.
What happens if you pull out the battery, wait 10 minutes to let the phone get cold and than reboot?
Well, no luck on my end. I could only even get into recovery one out of every 50 times or so that I tried, and when I managed to I wasn't able to sideload any system software because it wouldn't initialize the driver (my computer recognized the phone just fine, except the ADB portion). Clearing the data did nothing either. Luckily I'm on Sprint and the phone's being recalled anyway, so I just walked in and they swapped it no questions asked. At least after flashing a TOT and clearing the data they shouldn't have an easy way to tell I was rooted or anything.
esok44 said:
Sounds like a heat problem in your case.
What happens if you pull out the battery, wait 10 minutes to let the phone get cold and than reboot?
Click to expand...
Click to collapse
Thanks for replying, I completely restored phone today and was a success. No more black background.
same random rebooting issue here as well. and I just bought this phone brand new from a 3rd party :/
Update: I seem to have gotten past the problems after updating to 10n. Now running stock debloated 10n rom with no reboot issues (so far)
Update 2: Had 1 - 2 cycle bootloop on 10n
esok44 said:
Just a short update by me:
I gave it to the retailer, they said it would take about 10 Days.
I hope this stuff won't happen again or this was the last time i am buying a LG Product.
I think i would have been better off by sending it directly to LG but nevertheless, maybe giving it to the retailer will make my warranty stay longer
I will keep you updated, including firmware Version the phone has after sending it in and so on.
Click to expand...
Click to collapse
I don't see how you giving your phone to your retailer will extend your warranty. That makes absolutely no sense, since your warranty begins from your date of purchase.
My phone also ended up with the bootloop and having to exchange with a new unit. I'm on the TMO Variant H811.
Sfkn2 said:
I don't see how you giving your phone to your retailer will extend your warranty. That makes absolutely no sense, since your warranty begins from your date of purchase.
My phone also ended up with the bootloop and having to exchange with a new unit. I'm on the TMO Variant H811.
Click to expand...
Click to collapse
Actually German Law is a little bit different.
Regular warranty is not what i meant in my post, i meant the "Gewährleistung" its an additional kind of warranty given out by the retailer.
There are some cases in which this "Gewährleistung", which usually lasts for about 2 Years is made longer. Mostly this happens when the retailer would have to send in a product for the third time, they basically give out a new one, which will be treated like a NEW device. So new Warranty, new "Gewährleistung".
I hope this somehow made sense
Today i got my phone back.
They repaired it.
Everything is like it was before, so i am pretty sure they didn't change it.
Firmware Version is 10d.
The Phone is working so far.
Will keep you updated if anything changes.
Greetz Esok
same issues unlocked ... rooted ... android 6.0 hard reset doesnt work ... kdz method stay at 5% and nothing happend .. etc etc

Phone won't boot

Hi All,
My phone will not boot. I have tried soft resets multiple times. It will not even boot after I selected the factory data reset by holding down the volume down and power button since it seems like that requires a full boot to reset. During boot it shows the LG logo and sometimes makes it to the AT&T logo but after that either black screens, back to the LG logo and powers off, or boot cycles and keeps showing the LG logo multiple times. I have taken out the SD card and tried all these steps with and without it. Took out the sim card and reseated it. The phone is stock and not rooted.
Let me know if you guys need more information or have any ideas.
Thank you all and I'm sure this is been solved before, but I'm at work and don't have time to research so thoroughly through all the threads/posts.
if it's not rooted and stock, i'd send it back to lg under warranty
reg66 said:
if it's not rooted and stock, i'd send it back to lg under warranty
Click to expand...
Click to collapse
I have already put in a ticket to LG before this post for their return shipping information and repair. I was just hoping by some miracle that someone had a fix besides a factory reset since it won't even boot to allow the factory reset.
Thank you
Ok, sorry for the lacking help! Good luck, hope someone else replies with a suggestion
This just happened to me too.
Shows the lg logo. Sometimes the att logo.
But, just doesnt boot up. All i see is a blank screen :/
From everything i read here on XDA it seems that many of the phones are faulty.
Symptoms are almost identical. Outta no reason reboots and dead phones. Many of them are stock not rooted.
I have still no answer from LG about mine. Hope to hear soon. Something is going on with these phones but what causes it.....that`s the question....
The same thing happened to my H-815 model. I went to bed listening to YouTube and woke up to a dead phone. The LED doesn't come on when charging. Just like you, when I turn it on all I see is the LG boot screen and then it shuts off. The phone repeats this twice and then doesn't turn on again.

H811 fried? KDZ won't work

So I'm pretty sure my phone is fried. Just wanted to double check with anyone before sending it in.
I was driving and streaming music to my car when it stopped, and I noticed my screen wasn't responding. Swapping the battery only showed me the LG splash screen before restarting, showing the splash screen, then shutting the screen off and not responding. No length of time will let it boot.
I have everything on my SD card so no worries, I tried wiping from recovery. TWRP booted, froze, screen shut off and the phone was again, unresponsive.
Last resort, restoring with the KDZ. I got it into download mode, waited to see if the screen shut off again, and went ahead with flashing after I saw it was ok. It finished up and rebooted, and once again all I saw was the LG splash screen. I got to the "Android is upgrading" screen at one point, and it froze and shut off the screen again. It was, again, unresponsive.
tl;dr
Phone crashes, even after KDZ flash and master reset. Is there any hope I can fix it? I have a backup phone in the meantime but it's so horrible, I miss my G4!
Thanks for reading.
Better send it. Got crazy bootloops myself.
At the end even couldn't charge it. After i got it back i asked what was broken, they told me that it was unable to repair mainboard and usb port and they put new.So my advice let it fly to the repair shop.

My G7 just randomly factory reset itself?

I received my lightly used LG G7 G710ULM a few hours ago. (purchased from eBay)
Went out and took a bunch of pictures with it without a sim card in it. Came home and powered the phone off before throwing my sim card in.
Booted the phone back up and it seems to have factory reset itself; Was thrown back into the initial setup screen and of course, after going through all that again, all the photos I took today are gone.
Needless to say I'm furious and now have trust issues with this thing.
Any idea as to what might have happened, if it's possible to recover my lost photos, or what I should do right now?
I haven't been able to replicate this issue yet (tried powering off and removing sim again) so it's not a consistent thing, but now I'm scared that it might randomly happen to me again.
Thanks.
Thaifight-R said:
I received my lightly used LG G7 G710ULM a few hours ago. (purchased from eBay)
Went out and took a bunch of pictures with it without a sim card in it. Came home and powered the phone off before throwing my sim card in.
Booted the phone back up and it seems to have factory reset itself; Was thrown back into the initial setup screen and of course, after going through all that again, all the photos I took today are gone.
Needless to say I'm furious and now have trust issues with this thing.
Any idea as to what might have happened, if it's possible to recover my lost photos, or what I should do right now?
I haven't been able to replicate this issue yet (tried powering off and removing sim again) so it's not a consistent thing, but now I'm scared that it might randomly happen to me again.
Thanks.
Click to expand...
Click to collapse
Are you sure that the previous owner account wasn't still logged in? If it was the previous owner could have launched a remote factory reset (yep it's a feature).
LameMonster82 said:
Are you sure that the previous owner account wasn't still logged in? If it was the previous owner could have launched a remote factory reset (yep it's a feature).
Click to expand...
Click to collapse
Pretty sure it wasn't as I had to do the whole Google setup when I first turned the phone on.
My friend postulates that this might be similar to the "security feature" found in newer Samsung Galaxy phones in which whenever a new SIM card from another country (more specifically from Canada) is used, when one switches to a U.S. SIM after having been on a Canadian SIM, the phone will do a factory wipe.
Man that just happened to me, I have been using this phone for like 3 days... I fully charged it and I don't know sometimes I like to make a restar so I hold power button to show the restart menu so I clicked on power off and restart, went to the bathroom took a shower and came back to find my phone reset.. No one's is in home so is no like someone tried to type pass codes and after several attempts go to factory reset so no that didn't happen, so yes my LG G7 reset itself... Sorry my bad English

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