Develop Bugs

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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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".
Click to expand...
Click to collapse
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

tab gets flickering screen and reboots

I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?

NightShadow02 said:
I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?
Click to expand...
Click to collapse
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.

i was thinking about that but i'm afraid of voiding warranty. do i even still have warranty? due to the knox?

flhthemi said:
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.
Click to expand...
Click to collapse
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.

NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I'm not by any means an expert or repairman of any kind, just so you know. I'm thinking maybe a loose connection at the terminals on the board the battery connects to or if they use a separate board for the battery to connect to and then to the main board it may be somewhere along in there. Maybe a loose wire going into the tab that connects to the prongs. It sure sounds like something isn't making a good connection. Sounds like a load gets put on it and it and that bad connection can't handle the load.
Might just be you're going to have to send it off...

You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.

Same Symptoms
NightShadow02 said:
You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.
Click to expand...
Click to collapse
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?

misrasandeep said:
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?
Click to expand...
Click to collapse
nope, ever since the Power Saving mode solution, it hasnt flickered and rebooted yet. and my warranty was expired by that point so i didnt bring it to the shop. no noticable reduction in performance so far

possible battery connector
NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I have seen this problems on 2 tablets 10.5 and 8.4 the connector where battery is connected on motherboard gets loose which causes reboots and flicker
Solution in my case was resoldering that connector again

i had the same problem, opened up my tablet, just disconnected the battery, cleaned the contacts, pushed it back, made sure its nice and snug, put it all back together and now battery doesn't drain as fast, no more flickers and reboots!

hmm. i'll have to give it a try. you think this may be something to do with condensation?

Sorry for the bump, but I'm having this issue as well on my S 8.4. Custom ROM. The thing with me is that it's not consistent. One day, it will do it a few times; others, no issues whatsoever. I'll try the suggested if it gets progressively worse.

Hey guys,
Unfortunately our home's tablet (Tab s 8.4 Wifi) has the same problem.
It never did weird whatshowever, but when I flashed a custom rom (which went perfectly smooth actually) the screen flashes and the tablet reboots sometimes.
Now it weird that this never happened before and only when I flashed a custom rom it began showing this behaviour.
I am affraid of opening this tablet, and I guess because of the custom rom there is no warranty left anymore (or can this be bypassed by some terminal trick?)
Also I question myself if this is not a software issue, and that it can be fixed with software or so?
Thanks for answering!

My Fix
Hey Guys!
I might have some surprising news to tell about this "issue".
I saw some unboxing video's and saw at what place the battery connector was placed. It was some sort of a 'push to click' system.
So what I did was the following:
I pushed the tablet at the place of the battery connector. I tried this at various places until I heard a *click*.
Now I don't have this issue anymore. Jay!
I hope this will help you too!

I started to have the same issue on a Tab Pro 12.2, presumably after the battery has lost considerable amount of its energy. Normally I remember this tablet to have a dazzling 10+ hours of usage time. Just after some serious usage time of more than 2 years this issue started, along with increasing temperature and finally reboot. From time to time Android gave a warning message about overheating. From time to time charge values drop big values at a time. From 45 to 20 or 80 to 50. Seems arbitrary. This was happening even when I was on stock, then I switched to some Android 6 stock port from some other tablet. Still the same.
I believe the battery needs replacement. (That's obvious after 18 months, I just mean blinking is related to this) Hope I can find a high quality one cause there are several garbage batteries.

Shortened battery life, random reboots, intermittent WiFi ... sound familiar?

I have the SM-T320 (Galaxy Tab Pro 8.4). About 5-6 months ago, I noticed that its battery life began to get much worse (used to last easily through the day, now only lasts a few hours of fairly light use). About two months ago it started suffering from random reboots at odd moments. I had been using one of the CM ROMs and tried others to see if I could solve the problem, with no success. Over the last few weeks the reboots have become so frequent that the tablet is unusable (random reboots every 10-15 minutes) and WiFi has also become unreliable -- the tablet seems to be able to "see" my home network, but can only occasionally get an IP address (even though the signal is strong and other devices have no problem).
Based on the fact that these symptoms have persisted through different ROMs, I strongly suspect it is a hardware issue.
I am wondering if anyone else has experienced these types of symptoms, and if so, how you solved the problem. I don't want to start opening up the tablet unless there is a good chance of success. Is this something a battery re-seat would fix?

Well the second Tab Pro I bought, after trashing the one I received for Christmas. Had a broken Anntena. No clue how that could have happened. As it's a very tiny Board that sits in the lower left Corner that has a Socket on one Side and the missing Gold Finger on the other. The upshot of that was I could only pretty much see the local Net. And Bluetooth had like Zero Range. Replacing that Part with the one from my first Tab Pro I managed to fix that.
As to the Battery, again the consensus here is that it's likely a somewhat lose Battery connection. So I would investigate those Threads for more Details.

Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.

Might be a failed battery.
Sent from my SM-G900T

^ That thought crossed my mind as well. The behaviour I'm experiencing at the moment is as follows:
When I plug in the USB charger, I get a boot loop ("battery charging" icon followed by a few lines of text on the screen, followed by a "battery charging" icon, followed by a few lines of text on the screen, etc.) This happens even if I haven't tried to turn the tablet on.
By holding down the power key and the volume-down button I'm able to get to the "install custom ROM" screen but can't continue past it -- pressing any other button only gets me back into the reboot loop.
I found a few tips online that I'll try out later -- otherwise I'll have to decide whether it's worth it to buy a replacement battery (anyone have a good source?)

-The shortened battery life must be due to being used excessively maybe.....It is recommended that you factory reset the device every 6 months so that it doesn't get wasted like that.
-And the reboots is probably because the Memory being used too much as well, once a limit has been reached it reboots so that it doesn't blow up!
-The wifi issue is very common, the SMT320 has a problem connecting to poor connection wifi...make sure your speed is fast enough and is quite close enough to the router. If that doesn't help, try restarting your router, mostly works.
The boot loop is a very annoying thing, make sure you are not dirty flashing and do a clean one,i,e, wipe your system,data and cache and flash a simple and smooth rom....your choice.
Hope this helped in some way....

Amazon... 20.00 prime
Sent from my SM-T320 using XDA Free mobile app

JHW3 said:
Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.
Click to expand...
Click to collapse
I have a bit of an update on this, for anyone following along or who finds this thread in the future. Re-seating the battery -- for a third time -- ended up solving the boot loop. The key was that I needed to leave the battery disconnected for an extended period of time (overnight). Things are mostly back to normal now, though the battery life is not what it used to be, so I may buy a replacement.

Tried rolling back to stock?
Had a lot of random reboots with cm, so I tried rolling back to a deodexed, deknoxed, debloated stock ROM.. problem dissapered... Then came back now after I've had the tab for 18 months. But only happens when battery is below 50% and screen light is fixed (turning on auto dimmed the screen a bit but stopped the reboots).
I have a T325.
Cheers!

While in the Woods..

Hey guys,
I currently own a Samsung Galaxy S9 and previously owned a Huawei Nexus 6p, both devices, while in the woods, behave very strangely. Since I don't own the 6p anymore, I'm only going to speak of the S9, which is brand new and in brand new condition. But this used to happen on my 6p as well!
A good 75% of the time, when I take my phone out of my pocket, it will be at the boot pattern lock screen. The screen will be on and the battery will have drained substantially. Somehow, the device is rebooting while in my pocket. This ONLY happens when I go camping in the woods here in Ontario. NEVER happens any other time. And it won't happen just once or twice. It'll happen a dozen times over the course of a day easily. My battery, while out in the woods, never lasts more than a day, even though I almost never use it.
Yes. I'm positive I'm not pocket rebooting. I'll move the phone into my cargo pocket, which has TONS of room. Same thing. I'm running stock Samsung, no root, nothing. The stock experience so far has been very smooth and stable. I've had no reboots, very little lags, etc. I step into the woods, BAM, starts acting a fool.
I have a Garmin watch connected via BT, but the watch is ALWAYS connected. NEVER had any issues with the Garmin device. Thought I'd mention this, since it's the only device I have connected to my S9.
Anyone else experiencing this? Or do I sound totally crazy here?? It bothers me because I don't want to go camping with a power bank. I'm often resorted to turning the device off completely and leaving it in my backpack, which isn't ideal.

TheShamsMan said:
Hey guys,
I currently own a Samsung Galaxy S9 and previously owned a Huawei Nexus 6p, both devices, while in the woods, behave very strangely. Since I don't own the 6p anymore, I'm only going to speak of the S9, which is brand new and in brand new condition. But this used to happen on my 6p as well!
A good 75% of the time, when I take my phone out of my pocket, it will be at the boot pattern lock screen. The screen will be on and the battery will have drained substantially. Somehow, the device is rebooting while in my pocket. This ONLY happens when I go camping in the woods here in Ontario. NEVER happens any other time. And it won't happen just once or twice. It'll happen a dozen times over the course of a day easily. My battery, while out in the woods, never lasts more than a day, even though I almost never use it.
Yes. I'm positive I'm not pocket rebooting. I'll move the phone into my cargo pocket, which has TONS of room. Same thing. I'm running stock Samsung, no root, nothing. The stock experience so far has been very smooth and stable. I've had no reboots, very little lags, etc. I step into the woods, BAM, starts acting a fool.
I have a Garmin watch connected via BT, but the watch is ALWAYS connected. NEVER had any issues with the Garmin device. Thought I'd mention this, since it's the only device I have connected to my S9.
Anyone else experiencing this? Or do I sound totally crazy here?? It bothers me because I don't want to go camping with a power bank. I'm often resorted to turning the device off completely and leaving it in my backpack, which isn't ideal.
Click to expand...
Click to collapse
Check if Settings > Display > Navigation Bar > Hard Press Home Button & Unlock With Home Button are disabled, otherwise it is very easy to turn the screen on when you pull the phone out of your pocket, was happening to me for a while until I realised what was happening
Battery drain could be coming from low carrier signal forcing the phone to search for a signal a lot more than usual

I'd stay out of those woods! ?

*Detection* said:
Check if Settings > Display > Navigation Bar > Hard Press Home Button & Unlock With Home Button are disabled, otherwise it is very easy to turn the screen on when you pull the phone out of your pocket, was happening to me for a while until I realised what was happening
Click to expand...
Click to collapse
Those settings were actually one of the first things I disabled on my S9. SUPER ANNOYING, but those aren't the causes for my strange behavior. I've experienced this same issue with all those disabled, as well as on a completely different device that doesn't even have those settings.
*Detection* said:
Battery drain could be coming from low carrier signal forcing the phone to search for a signal a lot more than usual
Click to expand...
Click to collapse
Really?? I did not realize this was a thing. Something to keep my eye out. Most places I go camping, even though deep in the woods, still has cellular reception, but usually not LTE, only 3G or no-G even some times. Are you able to enlighten me on when the S9 drains the most when it comes to it's carrier signal? I just want to know how to set my phone next time I go into the woods for best troubleshooting.
Thanks for the reply!

Tel864 said:
I'd stay out of those woods!
Click to expand...
Click to collapse
Last I checked, they are probe-free woods. My phone is probably the one getting the probe.

TheShamsMan said:
Those settings were actually one of the first things I disabled on my S9. SUPER ANNOYING, but those aren't the causes for my strange behavior. I've experienced this same issue with all those disabled, as well as on a completely different device that doesn't even have those settings.
Really?? I did not realize this was a thing. Something to keep my eye out. Most places I go camping, even though deep in the woods, still has cellular reception, but usually not LTE, only 3G or no-G even some times. Are you able to enlighten me on when the S9 drains the most when it comes to it's carrier signal? I just want to know how to set my phone next time I go into the woods for best troubleshooting.
Thanks for the reply!
Click to expand...
Click to collapse
I generally have 4G most places I am so I can't help there, but I would try setting the preferred connection type to whatever you seem to get in the woods the most, so if it drops to H+ or E or whatever you get when 3/4G isn't available, set it to 2G or whatever the lowest available is in connection settings, could be that searching for a 3/4G signal constantly is causing that drain so telling it not to even look for one could help, but also could be that this radio type is causing that drain itself, maybe 3/4G signals are a lot less power hungry regardless of whether or not the phone is set manually to them or not
You could test it in the house now, set it to 2G and do a battery drain test vs 3/4G you usually have, if there is no extra drain in the house, there should be no extra drain in the woods, but if there is then 2G and lesser obviously uses a lot more power

Tel864 said:
I'd stay out of those woods!
Click to expand...
Click to collapse
This guy gets it. You have been warned, lol. If you have a logcat I'm sure someone would be able to identify the problem.

pedodroid said:
This guy gets it. You have been warned, lol. If you have a logcat I'm sure someone would be able to identify the problem.
Click to expand...
Click to collapse
Haha!
Logcat is a good idea. I think the next time I'm out there, I'll pull one and we'll see what's what.
Should be going back into the woods real soon. Blair Witch be damned.

Far left side of OP7t screen doesn't register touch reliably.

Yesterday I received a gently used Oneplus 7t I bought from ebay. I noticed as I was trying to log in to my Google account during setup that the letter "a" wasn't registering very well, but it seemed like when I unplugged it from the charger it worked again, so I figured it was the result of using a cheap cable.plugged into a laptop and kept setting it up. Later I noticed it happening again, all along the left side - I couldn't toggle the wifi quick setting. So I started testing and experimenting. If you start the touch elsewhere on the screen and go to the left edge, it registers fine, but if you start anywhere in the "dead zone" it rarely ever works. Dead zone is less than 1 cm in width (enough to make it difficult to get the letter a or the shift button and almost impossible to type the letter q) and spans the entire left side. All other edges work fine. I thought maybe it was software related (I'm on OOS 10.3.7) so I tried a couple different kernels (arter97 and bluspark); they definitely didn't improve the issue and might have made it a bit worse. The result of the engineering mode test was "touchpanel fail", which implies it's a hardware failure, but could it be if that part of the screen does work some of the time? I took a phonecall as I was typing this and after I hung up, the dead zone seems to be more responsive, although it still misses taps fairly often. That again makes me think it's likely a software issue. But I can't find anyone else with the issue while googling the problem, which leads me back toward a hardware issue. Really don't want to fool with sending it back and finding another one to purchase if I don't have to.

There's a sort of relevant thread on the 1+ support forum from 05/20
https://forums.oneplus.com/threads/latest-update-terrible-touchscreen-sensitivity.1233414/
1+ answer is
According to your update history and how you updated, a cache cleaning might be necessary.
You could even have to clean flash a new ROM.
Click to expand...
Click to collapse

wfred said:
There's a sort of relevant thread on the 1+ support forum from 05/20
https://forums.oneplus.com/threads/latest-update-terrible-touchscreen-sensitivity.1233414/
1+ answer is
Click to expand...
Click to collapse
While that thread does seem pretty relevant on its face, this is a factory reset phone that was clean flashed (no OTA delta because I had unlocked the bootloader). And the sensitivity was fine across the screen except for that strip on the left side.
So I kept hunting for answers, and one of the crazier ones I found was to take the electronic igniter out of a lighter and click it on the screen. Would you believe that actually improved it, to the point of me almost declaring it fixed? That is, until I plugged it in the charge again. Not only does the problem come back full force when plugged it, but it remains somewhat after unplugging (I think it has missed at least 4 "a"s in this post). So I guess it is some kind of hardware issue