Brightness dropping to 90% - G4 Q&A, Help & Troubleshooting

My phone is getting warm to the touch but mine is dropping my brightness down to 90% often. This only appears to be the case when it gets warm and once it has a chance to cool off it jumps back up to 100% on it's own.
Quite annoying, anyone else?

xPK44x said:
My phone is getting warm to the touch but mine is dropping my brightness down to 90% often. This only appears to be the case when it gets warm and once it has a chance to cool off it jumps back up to 100% on it's own.
Quite annoying, anyone else?
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My G2 used to do that, but I haven't noticed any heat issues with the G4 at all.

Yep, g3 did it as well. Happens often on the g4, annoying

I'm not any kind of helpful but I'll confirm this happens all the time.

Related

Heat on the top right of the phone

I was playing games on my phone for an hour or two and noticed in the top right of the screen about where the power button is, it was getting really hot. Just on the screen face. I took my cover off and felt around the back and it was cool. But it was getting noticeably hot when touching that part on the screen. Has anyone else noticed this?
Zalnorn said:
I was playing games on my phone for an hour or two and noticed in the top right of the screen about where the power button is, it was getting really hot. Just on the screen face. I took my cover off and felt around the back and it was cool. But it was getting noticeably hot when touching that part on the screen. Has anyone else noticed this?
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Yeah..must be where the CPU/gpu is
sent from my DAMN phone!
I'm worried about Heat for my phone E4GT too.
Idle, it's around 27c, which isn't bad at all.
But during usage it jumps to 34-37c, and wireless tethering causes it to go 49c.
My GTX 570 runs idle at 37c, that's fairly cool for a GPU but my knowledge in phone hardware isn't nearly as great.
What kind of temps can this phone handle?
Same issue here I m so pissed
Sent from my SPH-D710 using XDA App
The highest mines gotten so far was 116F but it was charging with my HTC charger and i was playing a game. The odd thing was the main part that was really hot to the touch was the top of the screen near the ear piece and it wasn't just warm it was hot. But that's only happened about 2 times now.
Sent from my §ãM§ûñG GåLâXÿ §2 éPîç 4G TøùçH
Third phone and still experiencing heat issue
I have changed my phone twice at Sprint and, for each one of them I have experienced the heat issue. Sometimes, the temperature goes as high as 53 degrees. I am not sure what exact combination causes this problem. I have seen it with or without 4G on - charging it makes it worse. Rebooting seems to help.
Makes me worry about this phone. I really like this phone but I definitely don't want to deal with a heat issue.
Heh, just try using this phone with zedomax's kernel set at 1.5ghz and playing Dungeon. Hunter HD II for an hour . . . it gets blazing hot! No performance issues through, only immense heat

screen brightness issue/overheating

i've had my phone since launch and ever since my screen brightness gets automatically reduced due to overheating.
At first, the screen will dim itself ever so slightly. After a few seconds later, it returns to normal brightness and it repeats itself.
Eventually, i notice upper half of my phone as well as the screen itselft getting really hot and the brightness dims permanently.
I usually keep my brightness setting at the highest level but when i go into the menu to increase the brightness setting back to highest, it tells me the brightness is reduced due to overheating. only way to increase the brightness back to highest is to turn off the screen and let it cool down for a few min.
whenever this happens im usually browsing the internet for no longer than 10 min before this kicks in. i seriously dont think im using too much cpu by browsing forums for this super phone to be overheating.
i've read other post regarding auto brightness feature causing issues but i have not enable this feature on my phone. and its kinda hard to believe that i have to lower my brightness to prevent it from overheating.
anyone having this issue? man i'd hate to return this phone and start from scratch. tia
I would love to hear more about this...My experience matches yours perfectly. Does everyone's phone do this? If enough people say no I'm going to get a new one...it is absurd. I got those phone almost primarily for it's beautiful screen which I can't see at full brightness for more than a minute or two!?? fnck that.
Is it possible for us to get a brand new replacement unit even if your 15 day return period is over? Assuming that other users are not experiencing the same problem.
Mine does this as well, I think it's some kind of fail safe if your phone is running hot cranking up the brightness is just going to add more heat so they limit it while it's running hot. Once it cools down then it will allow it again
I have this same issue, I have to recharge above 30 percent to get the point where I can max the brightness up again
Hmmmm... guess im not the only one with this issue and hoping that it is addressed in the future update. However, it seems odd that no one brought this up? Could it be that there are only a few of us that are affected? If so, im beginning to think that this is a hardware defect?
Ive had the phone since day one. I am not having this problem. The only time it ever gets noticeably warm is when using the phone for extended periods while charging. And this is not hot like some people are reporting. I would try exchanging the phone.
Mine did this the other day, I normally have auto brightness on but I was showing a photo so i went to turn it off and crank the brightness up but it didn't let me. I pulled the battery for 10 seconds and it let me do it.
I think alot people are not experiencing this issue because they either keep the auto brightness feature turned on or keep the brightness setting at a low level. I dont wanna exchange my phone if im gonna have the same issue. What can i do?
icexige said:
I think alot people are not experiencing this issue because they either keep the auto brightness feature turned on or keep the brightness setting at a low level. I dont wanna exchange my phone if im gonna have the same issue. What can i do?
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You may be on to something.... I rarely ever have my screen at 100%, mostly because its just too bright for me.
Although, I did watch 2 hours of video (1 hour from the SD card, one streaming from Netflix) at full brightness, and never had a heat issue. A little warm, maybe, but certainly not hot.

Reports of Dimming On Over Heating

Just read the review by PC Mag, and I have to admit it's making me a little hesitant to pick up the phone Sunday. Essentially when the phone gets warm it auto dims the screen. I wish he posted more details about the issue.
I've been jazzed about the phone for a couple of weeks now, but it does have some drawbacks for me right out of the box. The non-removable battery, the lackluster camera, and lack of micro-sd slot on the Sprint version. Still I could live with those issues, by and large, but the dimming issue reported by PC Mag has me to the point where I'm reconsidering buying in.
I'm hoping people who get this phone over the weekend weigh in with their experience on the issue.
Here's the relevant excerpt:
"One big problem: I did most of my testing with the screen brightness set to maximum. I noticed it dip considerably after about 10 or 15 minutes of benchmarking. When I checked on it in the phone's Settings, I saw the brightness level had dropped down to 66%. I tried to turn it back up, and got the message, "Unable to brighten more due to high temperature. Try again later." I encountered this issue on multiple occasions. Especially when using processor-intensive applications like games, the top half of the phone becomes increasingly warm. LG claims it has not encountered this issue, but two test units as well as our AT&T model of the phone did the same thing."
http://www.pcmag.com/article2/0,2817,2411011,00.asp
Who keeps their phone on max brightness? 66 is twice what my brightness is set on :/
But yes, I will agree that it's an unusual thing to force user to take those measures.
daryllh said:
Who keeps their phone on max brightness? 66 is twice what my brightness is set on :/
But yes, I will agree that it's an unusual thing to force user to take those measures.
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Totally agree. That's why I'm sort of waiting with anticipation for people to get them in their hands and report their experience with that issue. I've got my current phone set to like 30% most of the time, so this is workable, but there are times when I need that brightness maxed out for a significant length of time.
I'm hoping the reports are good. I really want this phone.
If the phone overheats I'm going to ask Sprint to cover the restocking fee when I return it. On the contrary, that's the only review that has mentioned overheating that I could find though.
sn0w said:
If the phone overheats I'm going to ask Sprint to cover the restocking fee when I return it. On the contrary, that's the only review that has mentioned overheating that I could find though.
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Yeah but they said it happened with three test sets, with both the AT&T and the Sprint hardware versions. Looks like it dims by design given the warning message they received. That tends to indicate LG knows they run hot on heavy usage.
touchprofan said:
Yeah but they said it happened with three test sets, with both the AT&T and the Sprint hardware versions. Looks like it dims by design given the warning message they received. That tends to indicate LG knows they run hot on heavy usage.
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That's not good news, I'm going to stay optimistic with it since it's already on the UPS truck and if it overheats on any normal use I will return it as defective. In all fairness, I've never had a smartphone that didn't overheat, especially during tethering.
Dimming Display
received mine yesterday and I was able to recreate the pc mag error. It wasn't that hot either, wasn't doing much. I'm a bit concerned.
faithfulshark said:
received mine yesterday and I was able to recreate the pc mag error. It wasn't that hot either, wasn't doing much. I'm a bit concerned.
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I haven't encountered the error yet, it runs a bit warm, but I keep my screen at about 36% to save battery.
My screen brightness is at 40% and looks great.
People have to understand the powerful hardware runs hotter. It's physics and unfortunately, unlike PC, cars etc, they can't simply install a better cooling system so they use software to tone things down when things get heavy. Also, it's not "overheating" unless the phone acts erratically. Running "hot" does not qualify as "overheating".
AvatarOfFrost said:
My screen brightness is at 40% and looks great.
People have to understand the powerful hardware runs hotter. It's physics and unfortunately, unlike PC, cars etc, they can't simply install a better cooling system so they use software to tone things down when things get heavy. Also, it's not "overheating" unless the phone acts erratically. Running "hot" does not qualify as "overheating".
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More like running warm, I think people might be over reacting a bit whenever this issue is brought up.
This user is reporting random reboots. Also, the sprint rep recommended they pull the battery for about a minute... on the lg optimus g.... with the fixed battery door.
http://community.sprint.com/baw/message/499063#499063
Sorry to hear that. No problems yet. The camera is disappointing, but everything else is working well. The dimming issue is an issue. I was out taking pics to test the camera and needed more brightness but the phone was locked at like sixty three percent or maybe forty three i cant remember.
Sent from my LG-LS970 using xda app-developers app

[Q] Too Hot.

I got my nexus 7 a week ago. Everything is working awesome but I really worried about the hot issue on the back side under the top speakers. Whenever I surf web for not more than 5 minutes the back feels a minor hot, I only take 3 to 5 pics with camera then the back of my tablet feels more hot, when I do gaming(Riptide GP2) for not more than 10 minutes then at this point my tablet,s back become really hot after this I have to close the game and wait for the tab to cool down.
Please guide me what to do I am really very worried about this right now I am on Stock 4.3.
Can you try to do the same things with minimal screen brightness, and see if there is any change?
Too low.
pacman1891 said:
Can you try to do the same things with minimal screen brightness, and see if there is any change?
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Thanks for your reply I tried it to the brightness bar at very end but this is not solving my problem. It's not happen only with Riptide GP2 but with the others games too.
Muhaimen Ayyub said:
Thanks for your reply I tried it to the brightness bar at very end but this is not solving my problem. It's not happen only with Riptide GP2 but with the others games too.
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Mine gets a little hot too, but much better than S4 and iPad3, so I am actually happy with it.
I guess that's just the way it is, unless you can compare yours with another one and yours is hotter under the same situation.
My 2 cents, I believe it isn't about the screen problem with brightness. The heat should be coming from the running processor. So far never heard about overheating on new nexus 7 yet. I'll suggest send for replacement , worst come to worst.
Because something gets hot doesn't mean there is a problem.
Its physics.
And feel is irrelevant. You need the actual temperature to determine if there is a issue.
Small thin devices with a powerful SoC will get warm under load
i think, if its still touchable and not using to much battery you shouldn't worry.
also you could try turning off wlan/lte and it shouldn't get that warm.

The heat Issue?

I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?
Rupar4o said:
I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?
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I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.
Heisenberg420 said:
I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.
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Thanks for the reply, someone with issues ?
Same here not felt it get warm even watching video.
When the phone gets hot several things happen.
1) The CPU is clocked down to help lower heat
2) Brightness is capped to help lower heat
3) If the phone continues to get too hot (usually when its already hot and you then start to play a really intense game, or benchmark the phone may shut itself down.
People complained a lot with the Korean model but I haven't seen anyone with a US model complain. Maybe the type of person that waits is less likely to be a phone gamer? They may have actually tweaked it so it doesn't activate as quickly or harshly. I do know some people disabled it on the Korean model. I haven't heard of anything bad happening but those few people may have felt dumb if it destroyed their phone and not posted that it did...
I have no heating problem with my lg g3 international D855 16gb model, even during quadrant test or playing games.
Sent from my LG-D855 using Tapatalk
Define an actual temperature for hot.
I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.
I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.
what heat issue
jutley said:
I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.
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Do we have any official documentation from Qualcomm on how hot the cpu can safely be?
flaring afro said:
Do we have any official documentation from Qualcomm on how hot the cpu can safely be?
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Not sure it must be out there somewhere I am sure.
[email protected] said:
I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.
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My girlfriend picked this up yesterday and this is happening to her G3. Not playing games though, just browsing the internet/reading an article. It makes no sense to me. How can you take control over that? She doesn't want to root the phone.
But yeah, just reading something or even looking at Facebook, the phone gets way too hot.
I picked up the Verizon version yesterday. It's gotten pretty warm around the power button a few times for me also. Typically not bad or what I would consider unusual with one or two exceptions.
My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!
ShiroEd said:
My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!
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This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.
Batfink33 said:
This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.
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Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.
mrhaley30705 said:
Define an actual temperature for hot.
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this.
all phones get warm if you are on it for an extended period of time, surfing (using data), gaming etc etc screen on for long periods of time. those saying they can game and not have heat are lying to you. phone gets warm when screen is on for extended period of time and by phone I mean any phone
ShiroEd said:
Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.
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Yeah, i had a flickering display which didnt go away.I returned that phone. Another poster yesterday had the same issue.Im wondering if the GPU is frying itself? Although the GPU does throttle as well as the CPU. Running Antutu I would get 60+deg C maybe playing a game for an extended period of time for example is causing damage? Just a theory.

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