Develop Bugs

Screen wake lag - Let's solve this thing

EDIT: According to garyd9, this is an Exynos issue and cannot be fixed. I believe him that this is an Exynos issue because it supports what I've seen, and he's a smart guy. I'm still holding out hope that there is some possible resolution in the future. Why else are we here if not to find ways to make our phones better, right? However, because of the nature of this issue, it's not going to be resolved by app settings, disabling apps, etc. If you don't see the lag yourself, it's because your phone isn't in deep sleep when you try to wake it.
Original Post:
Alright guys, some of you have probably noticed that this phone suffers from the wake lag that others (all Samsung?) have also suffered from.
Symptom: When you press the power or home button it takes 1-2 seconds before the screen turns on.
This DOES NOT happen when the phone is plugged in, likely because the problem is a delay getting the phone out of deep sleep. Deep sleep does not occur while the phone is plugged in.
Culprit: Anybody know? My wife's AT&T GS2 has this same problem and has with every ROM/Kernel combo I've tried (AOSP, AOKP). My Skyrocket has the issue on some of the more recent versions of Sky Jelly Bean, which I believe Sean said was a Kernel problem.
Fixes that don't work: This morning I tried the most popular suggestions:
Turn off Lock Screen Popup note
Lock Screen Ripple Effect
S-Voice home key
S-Voice Auto-start speaker
S-Voice wake up command
NONE OF THESE WORK!
So, let's band together and solve this thing. Do some tests and find something that works. Preferably, a solution that takes as little modding as possible.
Is this something that can only be solved by a customer kernel? If so, let's see if a dev is up to the task!
EDIT TO ADD: This seems to be an issue on all variations of this device. I'm searching their forums for an answer, but don't see one yet. I decided to post this here to get more eyeballs on the problem
More info from Entropy512:
Entropy512 said:
To be more detailed: It seems to be specific to how Samsung wires up the modem interfaces of Exynos devices. On Exynos4 devices, they're always hung off of HSIC (a variant of USB) buses. Since HSIC is based on USB, it has the same slow suspend/resume of USB. Almost all Exynos3 devices hung the modem off of a serial port if I recall correctly, and these devices could suspend/resume much faster. If you look at a resume sequence, there are huge time gaps, and after the first 200-300 msec, almost all resume activity is modem stuff.
The only solution, unless someone figures out a way to make the HSIC resume faster (I'm not messing with it, I have enough trouble getting it not to drop the bus randomly!!!!!!!), is to inhibit deep sleep with a wakelock - but this will be bad for battery life.
Click to expand...
Click to collapse

Jrockttu said:
Alright guys, some of you have probably noticed that this phone suffers from the wake lag that others (all Samsung?) have also suffered from.
Symptom: When you press the power or home button it takes 1-2 seconds before the screen turns on.
This DOES NOT happen when the phone is plugged in, likely because the problem is a delay getting the phone out of deep sleep. Deep sleep does not occur while the phone is plugged in.
Culprit: Anybody know? My wife's AT&T GS2 has this same problem and has with every ROM/Kernel combo I've tried (AOSP, AOKP). My Skyrocket has the issue on some of the more recent versions of Sky Jelly Bean, which I believe Sean said was a Kernel problem.
Fixes that don't work: This morning I tried the most popular suggestions:
Turn off Lock Screen Popup note
Lock Screen Ripple Effect
S-Voice home key
S-Voice Auto-start speaker
S-Voice wake up command
NONE OF THESE WORK!
So, let's band together and solve this thing. Do some tests and find something that works. Preferably, a solution that takes as little modding as possible.
Is this something that can only be solved by a customer kernel? If so, let's see if a dev is up to the task!
Click to expand...
Click to collapse
I'm not feeling major sleep lag on att , Sprints on the other hand was pretty bad with 2-3 sec delay

Simple soft locker from market... doesnt seem to effect battery. Try it out works great
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

u921333 said:
Simple soft locker from market... doesnt seem to effect battery. Try it out works great
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
The app creates a partial wakelock, so it will affect battery. A wakelock will keep the phone from going into deep sleep, which is what extends Android phone battery life. With such a large battery, it won't be as noticeable on this phone, but it still has substantial negative effects.

sling said:
I'm not feeling major sleep lag on att , Sprints on the other hand was pretty bad with 2-3 sec delay
Click to expand...
Click to collapse
I'm getting about 2 second lag on both mine and my wife's AT&T N2s. Mine is rooted, hers is not.

Jrockttu said:
Alright guys, some of you have probably noticed that this phone suffers from the wake lag that others (all Samsung?) have also suffered from.
Symptom: When you press the power or home button it takes 1-2 seconds before the screen turns on.
This DOES NOT happen when the phone is plugged in, likely because the problem is a delay getting the phone out of deep sleep. Deep sleep does not occur while the phone is plugged in.
Culprit: Anybody know? My wife's AT&T GS2 has this same problem and has with every ROM/Kernel combo I've tried (AOSP, AOKP). My Skyrocket has the issue on some of the more recent versions of Sky Jelly Bean, which I believe Sean said was a Kernel problem.
Fixes that don't work: This morning I tried the most popular suggestions:
Turn off Lock Screen Popup note
Lock Screen Ripple Effect
S-Voice home key
S-Voice Auto-start speaker
S-Voice wake up command
NONE OF THESE WORK!
So, let's band together and solve this thing. Do some tests and find something that works. Preferably, a solution that takes as little modding as possible.
Is this something that can only be solved by a customer kernel? If so, let's see if a dev is up to the task!
EDIT TO ADD: This seems to be an issue on all variations of this device. I'm searching their forums for an answer, but don't see one yet. I decided to post this here to get more eyeballs on the problem.
Click to expand...
Click to collapse
I have everything that you have listed except Turn off screen popup mode & I have no lag at all.

It's a side effect of the exynos SOC. You can't "fix" it. It just takes about 800ms to wake from deep sleep.

garyd9 said:
It's a side effect of the exynos SOC. You can't "fix" it. It just takes about 800ms to wake from deep sleep.
Click to expand...
Click to collapse
800ms???? No way can I wait that long lol jk
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

garyd9 said:
It's a side effect of the exynos SOC. You can't "fix" it. It just takes about 800ms to wake from deep sleep.
Click to expand...
Click to collapse
Bummer.

Jrockttu said:
The app creates a partial wakelock, so it will affect battery. A wakelock will keep the phone from going into deep sleep, which is what extends Android phone battery life. With such a large battery, it won't be as noticeable on this phone, but it still has substantial negative effects.
Click to expand...
Click to collapse
I have used it on my galaxy s2 and my international galaxy s3 without seeing any negative battery issues. Now granted it has to have some effect but even with the not so great life on s2 wasnt noticeable. Try it out and see if it works for you. I was skeptical at first.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

It is in fact S-Voice.. completely remove it from the Note and you will remove the lag.. this has been an issue with virtually every device with S-Voice... I bet there will be a bebloated ROM come along in the next day or 2 and itll fix it.
Sent from my SAMSUNG-SGH-I317 using xda premium

I dont but I do know my galaxy s3 had it even when I was on aokp.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

daddymatt said:
It is in fact S-Voice.. completely remove it from the Note and you will remove the lag.. this has been an issue with virtually every device with S-Voice... I bet there will be a bebloated ROM come along in the next day or 2 and itll fix it.
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
Like the poster above this says, my wife's Galaxy S2 has the lag on AOKP and AOSP based roms that do not have S-Voice. As much as I don't want to believe it, Gary is likely right that it's an exynos issue. I was just hoping that it could be solved through a kernel.
Tested it for ****s and giggles, definitely not S-Voice. I disabled it and restarted phone. Let it settle about a minute from start up, opened BetterBatteryStats to CPU state screen and looked at the "deep sleep" state. Turned screen off for a few seconds, lagged, checked deep sleep state to make sure it had increased (ensuring it was recovering from deep sleep). This is the simple method to test any of these supposed fixes that people say will solve the laggy wake.
Anybody that says their phone doesn't lag when they wake up the screen is likely because they're looking at it while they're charging it, they're playing music, they have an active notification, or they're turning it off and back on really quick. All of these prevent the phone from deep sleeping. Deep sleep is what causes the issue.

I had lag on my Note I whenever it would deep sleep on any Rom. This only happened when I had Wi-Fi off when sleeping. When I turned Wi-Fi on all the time lag was gone. Not a clean battery friendly fix but the lag was driving me crazier than charging the battery a little sooner.
Sent from my GT-N7000 using Tapatalk 2

I have the att version and I was just wondering...the same thing...I am willing..to try anything...I mean it sucks just waiting a little bit. I was just waiting for a new rom

daddymatt said:
It is in fact S-Voice.. completely remove it from the Note and you will remove the lag.. this has been an issue with virtually every device with S-Voice... I bet there will be a bebloated ROM come along in the next day or 2 and itll fix it.
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
I would have to say this is true. I've seen people do this in videos and it seems to work. They say its the wake looking and checking to see if you held the button or double clicked it that will solves this problem. Are there any other settings that control the home button settings like how you show recent apps or s-voice?

http://www.youtube.com/watch?v=UHMIxBUclh0&feature=plcp

truth77 said:
I would have to say this is true. I've seen people do this in videos and it seems to work. They say its the wake looking and checking to see if you held the button or double clicked it that will solves this problem. Are there any other settings that control the home button settings like how you show recent apps or s-voice?
Click to expand...
Click to collapse
The only thing disabling S-Voice does is make your Home key work faster once the phone is already on because it's not waiting to see if you're double tapping it. S-Voice has no impact on the wake issue.

Mj23foreva said:
http://www.youtube.com/watch?v=UHMIxBUclh0&feature=plcp
Click to expand...
Click to collapse
That's the first thing I watched this morning when investigating this issue. If you notice, his "fix" doesn't seem to work that well for him. Try it yourself, it won't work. That's why I put it in the OP that these don't work.

No lag here and the phone's been in use/running for 24 hours now.

Screen brightness repeatedly going up and down

Was reading some stuff on the web today and the screen brightness went down, then about 15 seconds later up, then it went down again, up, down, etc. Drove me nuts, had to stop reading. Times between changes were maybe 15-20 seconds apart. I lowered the brightness to 50% and it still did it.
What gives?

Do you have auto brightness on ?

Nope, Auto Brightness was/is not on.

I know there was an issue in the beginning when the device gets hot or thinks its hot, it will decrease brightness.
Sent from my LG-LS970 using xda premium

_Epic said:
I know there was an issue in the beginning when the device gets hot or thinks its hot, it will decrease brightness.
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
Agreed. Most likely the phone is getting hot and lowering the brightness to help it cool off a bit. Can you be more specific on what you are doing when this happens?

Yeah, I've read about the heat thing. I've seen that message pop up once on my phone a while back. If it lowers brightness I'm OK with that if it would just stay lowered (and if, in fact, that was the problem with my phone.) Like I said, I lowered it myself but the problem persisted. It started doing this when I was reading some stuff online. No video, no outrageous number of apps running in the background - maybe 3 or 4? I sent one text and one email, that's it. I noticed all 4 cores were on so I turned on Eco Mode and still had the problem.

Colonel Travis said:
Yeah, I've read about the heat thing. I've seen that message pop up once on my phone a while back. If it lowers brightness I'm OK with that if it would just stay lowered (and if, in fact, that was the problem with my phone.) Like I said, I lowered it myself but the problem persisted. It started doing this when I was reading some stuff online. No video, no outrageous number of apps running in the background - maybe 3 or 4? I sent one text and one email, that's it. I noticed all 4 cores were on so I turned on Eco Mode and still had the problem.
Click to expand...
Click to collapse
Keep ur brightness at 60 or below and it won't do that.
Sent from my LG-LS970 using xda app-developers app

I've noticed it only happens to me when the phone is plugged in and the screen starts doing its lag thing. I figured the two were related (that whole voltage bug)

[Q] Screen Wake Delay?

So I searched around in this forum but I can't find an answer. My Note 2 (AT&T obv) takes almost a full second to wake after pressing the unlock button. It's been like this through 2 roms and was the same way on my stock rom. Literally I press the button and it takes a good 1/2 to a full second to wake up to the lock screen. Am I the only person having this issue? I tried removing my SD card and it slightly lowered the wake time but it's still significant. I went from my Inspire 4G to this and even with the perseus kernel and both on cleanROM and Jedix6 or whatever it's called the problem persists and the phone doesn't seem as snappy as my OC'd Inspire. I mean the inspire had little to no lag at all after pressing the button to see the lock screen but it seems odd to have to wait as long as I do on a newer, faster phone. Maybe I'm just being nit picky... Any ideas?

Bliznade said:
So I searched around in this forum but I can't find an answer. My Note 2 (AT&T obv) takes almost a full second to wake after pressing the unlock button. It's been like this through 2 roms and was the same way on my stock rom. Literally I press the button and it takes a good 1/2 to a full second to wake up to the lock screen. Am I the only person having this issue? I tried removing my SD card and it slightly lowered the wake time but it's still significant. I went from my Inspire 4G to this and even with the perseus kernel and both on cleanROM and Jedix6 or whatever it's called the problem persists and the phone doesn't seem as snappy as my OC'd Inspire. I mean the inspire had little to no lag at all after pressing the button to see the lock screen but it seems odd to have to wait as long as I do on a newer, faster phone. Maybe I'm just being nit picky... Any ideas?
Click to expand...
Click to collapse
Ive noticed it as well. Got used to it and it don't bother me anymore but a solution would be nice
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

http://forum.xda-developers.com/showthread.php?p=33492447
Sent from my SAMSUNG-SGH-I317 using xda premium

have you tried to increase your minimum deep sleep cpu frequency from 200mhz to maybe 350mhz or so?
a shot in the dark would be reducing the animation scale in developer settings but this is only if it's considered an animation when you turn on the phone

battery life is amazing on this phone and if you agree and want to try it. There is a app called soft locker on the market that will fix the delay. I dont notice that much of a drain on the battery even though I know it has to have some. Basically the CPU in samsung phones go into a very deep sleep and that helps battery but if you use the above app it creates wakelocks that keep it from deep sleep and fixes the issue.
This can make battery life less but like I said I have used it for over a month and still get over a day out of my phone and I usually have 4 hours or more screen on time and still end day with 25%-50% battery left.

http://forum.xda-developers.com/showpost.php?p=35617276&postcount=2096
Apen83 in the Jedi ROM thread says to do this:
"Settings > developer options > window animations off / transition off / animator duration off"
Looks like its working for them.
If it works for you, hit the link and thank his post.

This doesn't help as it's not an animation.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

It's a characteristic of Exynos processors. It sucks, but what can ya do?

I'm using asylum rom and kernel and see nowhere near the delay that stock had. It's almost instant on for me

Its probably the pegasusq governor, but that's what you have to go with to be able to hotplug CPU cores. This is the price you pay for battery life.

You did not search well enough. There is no solution, and nothing you can do about it other than the aforementioned Soft Locker, which will negatively impact your battery life.
More info here: http://forum.xda-developers.com/showthread.php?t=1983697&highlight=wake+lag
It sucks, but I guess it's a sacrifice I have to live with on an otherwise awesome device.

Help with setting my battery straight

On BBS, My kernel and partial wake locks are mostly under control as far as percents but they have some seriously high wakeup counts. For example, "Key events" has 74740 wake up counts but it's 0.0%. In "other", it's awake time is 96%, as well as no data connection, etc, I have pics so you can see what I'm talking about. According to GSam, the android system is taking the most power and second is the screen. I lowered my max/min cpu and set the phone in power save mode. It goes from 100-30% in 6 hours. I have it on wifi like all the time (poor 3g coverage where I am) and it sits in my pocket. I did the basic requirements ( got rid of apps, fixed refresh intervals, etc) I attached my log.

Deleted

It'd be cool if we knew what Rom/kernel your using.
Sent from my GT-I9300 using xda premium

xblackvalorx said:
It'd be cool if we knew what Rom/kernel your using.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Of course. I'm on Jellybomb version 11 and im using the stock LJ 7 kernel.

Could I have some help please

Optimus G Issues Thread

This thread is for track issues regarding the Sprint Optimus G. This is not a discussion thread and I will flag any discussion type posts for removal. Information will be posted using the following template ONLY;
ROMs-
Kernels-
Issue(s)-
Example of issue(s)-
How to duplicate the issue(s)-
Not following the above template will get you post flagged for removal. We must be able to duplicate the issue in order to consider it valid. Here is an example of how you post should look;
ROM-Stock Rooted, Lifeless, Imperium
Kernel-All
Issues(s)- 3G data failure, high temp
Example of issue(s)- Flashed ROM and had to reprovision phone to get 3G data to work. Running CFBench multiple times CPU temp showed as high as 80C in System Tuner.
How to duplicate the issue(s)- Flash any ROM. Run CFBench multiple times and monitor CPU temp with System Tuner.
Tools and suggestions;
System Tuner for monitoring CPU temps
CFBench App
(list will be updated as more information comes in)

Issue report
ROM-Stock Rooted, Lifeless, Imperium
Kernel-All
Issues(s)- 3G data failure, high temp, losing data connectivity after Optimizer turns on wifi
Example of issue(s)- Flashed ROM and had to reprovision/activate phone to get 3G data to work. Running CFBench multiple times CPU temp showed as high as 80C in System Tuner. Losing 3G service after Optimizer tries to find wifi connection for extended peroid of time
How to duplicate the issue(s)- Flash any ROM. Run CFBench multiple times and monitor CPU temp with System Tuner. Let Optimizer activate wifi with no wifi network to connect to for hours then attempt to connect to 3G.

ROM- Stock sprint rooted "VZ8"
Kernel- 3.0.21
Issue(s)- Loss of data connection
Example of issue(s)- Losing 3G service after Optimizer tries to find wifi connection after I have specifically turned off wifi.
How to duplicate the issue(s)- Enter location with a previously connected wifi network, turn wifi off, wait for optimizer to turn wifi back on, attempt to run application that requires data, receive 'no data connection, try again later' message.

ROMs- Stock ZV9/Lifeless/Imperium
Kernels- Stockish 2.1.1
Issue(s)- Keyboard typing goes crazy
Example of issue(s)- If I am typing a message and going fast and spell a word wrong such as "goin" it will autocorrect to "going" but end up like this in the message "goingoing" almost like the autocorrect doesn't correct the word and just writes in front of it. Another issue is similar to the issue in ZV8 were the cursor goes to the front except when i try to delete a letter it will go crazy and will just keep adding the past 2 or 3 letters and end up with like a 1000 letter message.
How to duplicate the issue(s)- Doesn't happen often, the autocorrect happens 7 times out of 10 and the other issue happens 3 times out of 10.
Only way to fix either issue is a reboot. But I have noticed it happening more when the device gets hot, so maybe it has something to do with the "True HD-IPS+" panel and the heat generated from the device. I will try to get a screenshot when it happens again.
EDIT: Joker, do you think heat is causing my issue? Like I said it only happens when the device is warmer than normal. I didn't want to create a new post and kill the thread.

Heat is caused by 3 main issues
1: quad core/big GPU/huge IPS display sandwiched into device the thickness of a pencil. Not really an issue however combined with...
2: mpdecison. A proprietary binary driver from Qualcomm that helps with making the phone appear smoother than normal by ramping up the clocks and cores unnecessarily. (Will be fixed)
3: poor thermal protection code. This one is part mpdecision's polling method/overwriting the thermal cooldown and inefficient code to prevent overheats.
Normally the CPU should ramp down at 80°C to cool off the CPU and also cut off some cores. At 85 it shuts down. However the code doesn't work properly and is very slow. Combined with mpdecision's polling/override method it can't work properly.
How to fix it. Better thermal protection code and getting rid of mpdecision. Currently mpdecison is what turns off the other CPUs when not in use. So changing to anything but ondemand or turning off mpdesicion results in excessive cores running.
I already added some code to override mpdecison on underclocking to help those with hot phones. More tweaks and fixes will come.
Sent from my LG-LS970 using xda app-developers app

_Epic said:
Joker, do you think heat is causing my issue? Like I said it only happens when the device is warmer than normal. I didn't want to create a new post and kill the thread.
Click to expand...
Click to collapse
It's getting away from the thread format but I'll answer it for him.
Most of you see/play with a couple phones a week, I fix as many a 20-30 in one day. Heat will cause the following;
touchscreen issues
signal level issues
call quality issues
display issues
the list goes on......
SOP when trouble shooting phone repairs
Duplicate
Hard reset (Baring obvious issues caused by apps/low memory of course)
Duplicate after hard reset
Possible causes are then Factory Software, hardware or both. (this is why I'm looking for issues affecting multiple ROMs including Stock Locked)

Lokifish Marz said:
It's getting away from the thread format but I'll answer it for him.
Most of you see/play with a couple phones a week, I fix as many a 20-30 in one day. Heat will cause the following;
touchscreen issues
signal level issues
call quality issues
display issues
the list goes on......
SOP when trouble shooting phone repairs
Duplicate
Hard reset (Baring obvious issues caused by apps/low memory of course)
Duplicate after hard reset
Possible causes are then Factory Software, hardware or both. (this is why I'm looking for issues affecting multiple ROMs including Stock Locked)
reported, again
Click to expand...
Click to collapse
I fix quite a few devices myself, as a lead tech at a Sprint store. I understand all the issues. I just wanted to know if the kernel changes will help with heat and such.
Sent from my LG-LS970 using xda premium

ROMs-stock
Kernels-stock
Issue(s)-
1. When typing in a comment box on the browser it is sometimes impossible to move cursor to edge of screen. You can resize the page to the see entire comment box. As soon as you click on the box to type it resizes back. If you need to move your cursor to edit text you can't get the cursor to anything off screen(sliding the cursor).
2. Auto correct duplicating text. I am using Swype. I am not sure if other keyboards do this. This is the same issue joker is describing. I just wanted to let you know I have the same issue and what keyboard I am using. I have had the problem since purchasing the phone and on zv8 and 9.
Example of issue(s)-
1. Typing in a comment box on a forum or posting an ad on craigslist.
2. As stated above.
How to duplicate the issue(s)-
1. The example should explain how to duplicate.
2. As stated above.
Sent from my LG-LS970 using xda premium

kc_exactly said:
ROMs-stock
Kernels-stock
Issue(s)-
1. When typing in a comment box on the browser it is sometimes impossible to move cursor to edge of screen. You can resize the page to the see entire comment box. As soon as you click on the box to type it resizes back. If you need to move your cursor to edit text you can't get the cursor to anything off screen(sliding the cursor).
2. Auto correct duplicating text. I am using Swype. I am not sure if other keyboards do this. This is the same issue joker is describing. I just wanted to let you know I have the same issue and what keyboard I am using. I have had the problem since purchasing the phone and on zv8 and 9.
Example of issue(s)-
1. Typing in a comment box on a forum or posting an ad on craigslist.
2. As stated above.
How to duplicate the issue(s)-
1. The example should explain how to duplicate.
2. As stated above.
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
Kc, same issue that I explained for your #2 with the text issue?
Sent from my LG-LS970 using xda premium

Yes, same issue. I just wanted to report it also so it makes it clear that the issue is widespread. Plus, if it matters I wanted to share what keyboard I was using. I doubt Swype is the issue but out of curiosity what are you using?
Sent from my LG-LS970 using xda premium

kc_exactly said:
Yes, same issue. I just wanted to report it also so it makes it clear that the issue is widespread. Plus, if it matters I wanted to share what keyboard I was using. I doubt Swype is the issue but out of curiosity what are you using?
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
Happens on Android Keyboard, Swift, and stock LG keyboard.
Sent from my LG-LS970 using xda premium

_Epic said:
I fix quite a few devices myself, as a lead tech at a Sprint store. I understand all the issues. I just wanted to know if the kernel changes will help with heat and such.
Sent from my LG-LS970 using xda premium
Click to expand...
Click to collapse
Yes in normal use it will, extreme use like benchmarking I can only improve how the kernel handles the heat. Better throttling and improved polling can help catch the heat faster before it becomes an issue that could cause damage. This phone is very sensitive to heat. Try leaving it recovery long enough and you'll see what I mean. Hard bricks are the last thing anyone wants even lg/sprint. Radios can also decrease or increase heat as with many many other software related issues. Battery life also drains faster at higher heat levels. I've seen phone(photon) that the charger couldn't keep up with drain until a reboot. Heat being a very obvious symptom on top of the heat. High discharge of the battery also causes heat, as does poor connections to the battery.
Sent from my LG-LS970 using xda app-developers app

ROM-stock rooted v8
Kernel-stock
Issues(s)- bluetooth
[Example of issue(s)- bluetooth drops on pickup of phone call.
It isnt all the time about 80 percent of my incoming call get dropped. But as soon as i hit bluetooth while in the call it reconnects.
Sent from my LG-LS970 using xda app-developers app

ROM-Stock ZV8 and ZV9 (eco mode)
Kernel-3.0.21 (assuming all)
Issues(s)- Keyboard freaks out while typing, causes duplication of words and network connection drop
Example of issue(s)- While typing a message using stock keyboard, cursor will "lock up" for a moment and "autocorrect" my word attaching the full word onto the partial. (e.g. "Hello how are you *doidoing*) I have noticed that my network/wifi connection drops momentarily afterward, even with excellent signal.
How to duplicate the issue(s)- Might be heat related; happens often after playing games or watching youtube and while charging. Go watch an episode of Dragon Ball Z Abridged on youtube or play some Jetpack Joyride then try to text a few pages afterward. Typing quickly might help replicate issue as well. If able to duplicate typing issue, spam it as much as possible and check network connection; see if wifi/3g/4g drops connection completely.

\m/ said:
ROM-Stock ZV8 and ZV9 (eco mode)
Kernel-3.0.21 (assuming all)
Issues(s)- Keyboard freaks out while typing, causes duplication of words and network connection drop
Example of issue(s)- While typing a message using stock keyboard, cursor will "lock up" for a moment and "autocorrect" my word attaching the full word onto the partial. (e.g. "Hello how are you *doidoing*) I have noticed that my network/wifi connection drops momentarily afterward, even with excellent signal.
How to duplicate the issue(s)- Might be heat related; happens often after playing games or watching youtube and while charging. Go watch an episode of Dragon Ball Z Abridged on youtube or play some Jetpack Joyride then try to text a few pages afterward. Typing quickly might help replicate issue as well. If able to duplicate typing issue, spam it as much as possible and check network connection; see if wifi/3g/4g drops connection completely.
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When I watch videos or play games the device gets hot and I can confirm the device is still hot when I send the text message. So I am still assuming heat related.

_Epic said:
When I watch videos or play games the device gets hot and I can confirm the device is still hot when I send the text message. So I am still assuming heat related.
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ive had it happen plenty of times when the device was not hot so it may not be

javskies said:
ive had it happen plenty of times when the device was not hot so it may not be
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Weird, every time it happens to me the device is hot. These issues are very confusing.

_Epic said:
Weird, every time it happens to me the device is hot. These issues are very confusing.
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You guys should turn off autocorrect unless you really need it. I have it off and have never experienced any typing issues.
*But I do have to admit that this phone gets hot more often than not.

jorgis1 said:
You guys should turn off autocorrect unless you really need it. I have it off and have never experienced any typing issues.
*But I do have to admit that this phone gets hot more often than not.
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I type insanely fast and it comes in great handy. Like I said doesn't do it all the time.
Sent from my LG-LS970 using xda premium

i just use go sms now and it doesnt do it