[Q] Memory leak or something else? - G2 Q&A, Help & Troubleshooting

So this issue has persisted throughout wiping data/factory resetting. I'm really not sure what this is.
Basically what happens is that my phone will gradually get slower and slower until it freezes and then reboots. However, after it reboots, it will go into a boot loop. What I will then need to do is basically wait it out by shutting it off. Then, I wait for an hour (maybe more) before I try turning it back on again, at which point it returns to normal.
Any idea? I thought it might be a memory leak? But how would that affect rebooting? I'd like to also mention that at one point my recovery somehow disappeared as well. I managed to re-flash TWRP using Flashify, but I haven't dared going back into the recovery, because last time when I had lost my recovery, I ended up thinking that I had to wipe my phone completely (because even Download Mode wasn't working correctly).
By the way, I'm running an AT&T LG G2 d800, on the "d80010q" firmware 4.2.2. I'm rooted, with Xposed modules running, as well as the camera mod flashed. No other modifications have been made except for buildprop and systctl (kernel) changes through android tuner.

Same issue
Hello,
I am having this exact same issue. Did you ever find a fix for this? I have been searching for hours. I have tried numerous things, flashing back to stock with lg flash tool, installing different roms, it happens on all roms.
Thanks

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[Q] Phone will not start after first restart from a fresh flash

I have scoured the internet to find someone with the same issue as me, and I haven't found enough to fix the issue, so I'm placing a plea for help here. I have installed TWRP 2.6 recovery, and I am trying to flash OmniRom 4.4.2 nightlies. Originially I was trying to flash cyanogenmod 11, but I had this same problem. It appears to be any kit kat rom that causes the problem (I haven't tried flashing stock or any non-kitkat roms, but I was running on rooted stock before I tried to flash CM11). Anyways, When I flash I am wiping dalvik, cached, system, and data. Then flashing the rom, then flashing Paranoid android gapps. It will boot the first time fine. My phone will work just fine afterwards. However, if my battery dies or I restart, I will be unable to boot back into the rom and my phone becomes a soft brick. It will just stay stuck at the galaxy s 4 logo for as long as I leave it on. I have left it on for more than 30 minutes and there are no changes. I can't have my phone being just a dead battery away from being bricked, so I am asking for your help! Anything is much appreciated!
One other side note: I had my phone just lock up on me once in the middle of it running just fine. Afterwards it turned off on its own and tried to restart, but it resulted in the same issue. I don't know if this is related or just a bug in the rom.
schmidty455 said:
I have scoured the internet to find someone with the same issue as me, and I haven't found enough to fix the issue, so I'm placing a plea for help here. I have installed TWRP 2.6 recovery, and I am trying to flash OmniRom 4.4.2 nightlies. Originially I was trying to flash cyanogenmod 11, but I had this same problem. It appears to be any kit kat rom that causes the problem (I haven't tried flashing stock or any non-kitkat roms, but I was running on rooted stock before I tried to flash CM11). Anyways, When I flash I am wiping dalvik, cached, system, and data. Then flashing the rom, then flashing Paranoid android gapps. It will boot the first time fine. My phone will work just fine afterwards. However, if my battery dies or I restart, I will be unable to boot back into the rom and my phone becomes a soft brick. It will just stay stuck at the galaxy s 4 logo for as long as I leave it on. I have left it on for more than 30 minutes and there are no changes. I can't have my phone being just a dead battery away from being bricked, so I am asking for your help! Anything is much appreciated!
One other side note: I had my phone just lock up on me once in the middle of it running just fine. Afterwards it turned off on its own and tried to restart, but it resulted in the same issue. I don't know if this is related or just a bug in the rom.
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Omni clearly states that it is an alpha, so you mileage may vary considerably.
Sounds kernel related. Have you tried just reflashing the kernel and seeing if it'll boot after that. Or trying a different kernel?
Thanks for the reply! I actually just fixed the problem on my own. I used Odin to flash a newer version of TWRP and then flashed omni, and it looks like everything is working just fine. I read a few people saying that they were having issues flashing kit kat roms with older versions of recovery, so I figured it was worth a shot.

[Q] Is my G2 dead?

Ive been running CM12 for a long time, but today I noticed I had a few missed calls and my phone hadnt rung. I rebooted the phone and it went into a boot loop. I cleared cache, but still bootlooping, dirty flashed the latest nightlie and then a full wipe - all of which resulted in the boot loop.
I restored my phone using the TOT method, but it would get to the setting up google account/wifi etc and reboot.
I used KDZ to install 30b lollipop ROM this seemed ok until reboot and then it would factory reset, optimise apps every time and be back to the setup screen.
I managed to install KK using KDZ and this seems more stable so used IOROOT and Autorec. I then flashed CM12 and GAPPS again, but it started to boot loop again.
I hadnt done anything to my phone prior to the problems - ie. no new ROMs, kernels or even apps.
Any suggestions or does it sound like something more physically wrong?
I have managed to get Cloudy G2 2.2 working without any problems except it isn't recognising my SIM. Does anyone have any thoughts or is this a dead phone?

G2 hardware issues, possibly related to flashing?

My G2 has been acting really funky lately, hanging on boot and not being able to "hold" recovery flashes. I'll start from the beginning of my little story.
On Saturday, I wanted to do a nandroid backup from TWRP (not sure which version, an older one but not terribly old). It failed several times. I went back into the OS (CM 12.1) and backed up all apps and app data to an OTG USB via Titanium Backup. This was successful. I tried to go back into TWRP a second time. Nothing. Recovery is not even there, I get a security error from what I believe is fastboot. I went back to CM and tried to re-flash TWRP. Now I get a security error on the LG screen. Nothing would boot, no recovery mode, I did have download mode although I had no PC with me so I didn't know this at the time. I was away last weekend so I had to go without a phone for a day... which was actually... kind of pleasent. Don't ask me why I carried two 32GB USBs and an OTG adapter on my keychain but no laptop, because I have no idea why I would do this, lol.
Came home Sunday afternoon and decided to nuke the whole phone with a TOT flash. Since I always wanted to try CloudyG2 since we all know AOSP-based ROMs don't do the camera justice, I went ahead and TOT flashed, re-rooted, re-AutoRec, etc. Everything worked wonderfully; I did a full wipe in TWRP, flashed in Cloudy, then the KK radio, then Xposed. Played around with things like XCam and a few Xposed modules. Everything was working awesome, so I did my restore in Titanium. Took a few hours, but Titanium says everything went fine (sans for a few CM apps which did not restore by design I guess). I checked out a few apps, all my data is there, wonderful. Titanium told me to restart so after poking around a bit, I went for the restart. Hang on boot. For several hours. Tried to go to recovery, fastboot security error. Seems it can't "hold" recovery or something else that I'm flashing?
Clearly I am doing something incorrect here with flashing and all that, but I can't figure out what. I'm not new to flashing and modding, and I've flashed regular CM updates and other goodies onto this G2 for quite a while with no issues. I'm going through the same steps I would normally with CM, and I've had plenty of success with that. Any ideas what I am doing wrong here?
Had same issue and know I hard bricked it trying to get it fixed ... Off to a different phone I guess .. Not sure why it wouldn't hold a recovery either after a few hours ... I gave up .. Good luck
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I337 extreme lag, random reboots, no recovery

Recently bought a new out-of-the box Galaxy S4 I337 from Amazon. Had i known how much trouble it would give me, i would have picked something else. When i first turned the device on, it was almost totally unusable due to lag and random reboots. Software version was 4.4.2. I used Odin to flash a rootable NB1 onto the device. Still had lag and random reboots. Upgraded to lollipop using this guide: https://forum.xda-developers.com/galaxy-s4-att/help/guide-att-samsung-galaxy-s4-sgh-i337-t3383078 and still have lag and random reboots. Also, the first time i upgraded to lollipop, i installed safestrap not knowing it wouldn't work on lollipop. Obviously, my recovery disappeared. When i figured out what was going on, i did a fresh install of lollipop. I got recovery back, but today when i tried to boot into recovery to wipe the cache, i discovered it had mysteriously stopped working again. If i attempt to boot into recovery, it just skips to the Samsung logo. I didn't install safestrap or any other custom recovery this time.
When i turn the phone on, either it hangs at the AT&T white splash logo and refuses to load at all, or advances to the lock screen. I have disabled animations and every widget i could on the lock screen and yet when i attempt to unlock the phone, it usually freezes. If i repeatedly swipe the phone for thirty seconds or so, it unlocks but it is still frozen and i have to continue swiping to prevent it from locking again. Eventually i'm able to navigate the phone normally, until it randomly reboots or freezes. Sometimes i see an error message that Touchwiz home, Process System, or SystemUI has stopped working or is not responding. This is always accompanied by a freeze. Also, choosing an option in the dialogue that comes up when i press the power button (shut down, reboot, etc) invariably causes the device to soft reboot. Other times a soft reboot happens totally at random, even if i'm not doing anything. Anybody have any idea what's going on or did Amazon just sell me a dud? All of these issues have been happening since before i rooted the device or upgraded it, except for the disappearing recovery mode.
Thanks in advance for your help.
Sounds like a data factory reset is in order. First you need recovery back so I would odin the latest firmware for the phone that can be flashed in odin. If it's still messing up then get Amazon to replace it.
Since you have safe strap though, try booting a TW based rom like Thor ROM or Golden eye ROM. That may fix some things.
StoneyJSG said:
Sounds like a data factory reset is in order. First you need recovery back so I would odin the latest firmware for the phone that can be flashed in odin. If it's still messing up then get Amazon to replace it.
Since you have safe strap though, try booting a TW based rom like Thor ROM or Golden eye ROM. That may fix some things.
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Just wanted to bump this to thank you for your reply. Never got the phone to work but i was able to get it back to stock and return it. I got a refurbished S5 instead.

[Help!] N910T3 Strange Crashing/Bootloop - Crashes even while in Recovery

Hey guys, I've encountered a thorny problem on my wife's N910T3, and am running out of ideas about what this could be... so, could really use some help.
Some background: The phone's been working fine for over a year of ownership, mostly on the stock ROM, which gets pretty laggy at times. A few weeks ago I installed a custom ROM (the Acapolypse-X N7 port) to improve performance, and for the past few weeks it's been working perfectly fine on the custom ROM no problem.
Today, when my wife went to check Twitter, the phone crashed and started bootlooping. I had seen a similar issue on my Note 3 before (which turned out to be a specific issue with the kernel I was using), so I figured I would just go into recovery, flash a different kernel or at worst, do a clean install of the ROM.
That's when things started getting weird: The phone would crash while INSIDE recovery during ROM installation (I've never seen a phone crash inside recovery before...) After failing to successfully flash a ROM or, even in cases when it succeeds, fails to boot, I decided to do a full flash back to the latest unmodified stock ROM (since I couldn't find an ODIN-flashable image to download, I used Samsung Kies for this - typically this resolves any kind of left over from previous installations).
On the first attempt, it succeeded - the phone booted into the stock ROM and I was able to start customizing settings. Figuring the issue has been resolved, I went ahead and attempted to root by flashing TWRP through ODIN, and that's when the phone went back to rapidly bootlooping again (it reboots every 2 seconds, I can't even get into recovery when this is occuring). The only way I can return to Recovery is by flashing it again in ODIN (typically this trick will only work once; upon rebooting the phone after that it is prone to start bootlooping again).
Based on the symptoms I suspected the NAND going bad. However, I receive no emmc read/write errors during flashing - all write operations in ODIN results in success and my friend even ran a full storage check via ADB and this phone just doesn't seem to have any bad sectors (I almost wish it were since that would resolve the mystery).
Anyone have any ideas what may be the problem? I have a decent amount of experience installing custom roms on my phones and troubleshooting installation issues, but I've never seen anything like this (crashing/bootlooping directly inside recovery).

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