Screen randomly glows when screen is switched off - Xperia Z Q&A, Help & Troubleshooting

Hey on my Xperia Z stock rom nothing flashed, when it is in standby (screen off) randomly the screen glows and does not stop, like the screen is still off but it's like the back light has come on? is this normal? seems to be a power wasting thing to me. unless i look at it from a slight angel (during the day) i can not actually tell it's on, i'm assuming this is why my screen is using 60+% of my battery is there a fix for this?

Are you using any power saving mode?
Sent from my C6602 using xda premium

gm007 said:
Are you using any power saving mode?
Sent from my C6602 using xda premium
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Stamina mode.

I have the exact same thing happen, and it is definitely a pain as like you say you can only notice it when looking at an angle, and as I have a flip case on mine I only notice while charging. It is just a case of pressing the power button twice to turn off but that is obviously only when you notice it's doing it! lol
I use stamina mode on mine (which is great) but not sure if this is anything to do with the backlight being left on as it only does it sometimes?

I had this issue when i first got my phone ,and not anymore.Not sure how it solved cause i did lot of factory reset and flashing firmwares.
Are you using light flow or any third party apps?
Sent from my C6602 using xda premium

I get this too. I get it when it's locked and it comes back on. Also when I unlock the screen sometimes this happens and I have to turn the screen off and on again to fix it.

Happening here also but not often. I thought it was low battery mode but happens when it's disabled as well.
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No i'm not using any third party light apps, seems like this may be an actual bug if multiple people are experiencing it
I have only done one reset/repair to fix the LED notification light bug.

Hope this helps
I know how to fix this. I have an xperia z1 so im not sure if my problem is the same but i use my phone as an alarm so i notice at night the screen is glowing while its standby. If you go to settings or maybe you have it in quick settings go to brightness and deactivate "adapt to lighting conditions" then it should be a black screen woth no glow in standby mode

Related

Phone unresponsive when waking up

Is anyone else having this issue as well I can get rid of it I've tried everything to what happens is sometimes when my phone is asleep tonight wake it up it's completely unresponsive, the screen turns on but I can't do anything other than hit the power button on and off and volume other than that I am stuck on the same screen. Also when I wake up in the morning after charging my phone overnight it is always frozen like this but even worse when it has been more than a few hours. Could this be related to using an alternative home? I have used both launcher pro and adw with the same results. I have never had this with any of my other android phones. Any ideas?
Sent from my DROID BIONIC using Tapatalk
Take it to Verizon and get a switchout.
Before I do that I would like to make sure that it isn't software based otherwise I will just run into the same issue.
Sent from my DROID BIONIC using Tapatalk
I haven't experienced that issue, but something similar. About once every 2 days my phone won't wake at all. The notification light seems to be working, but pressing the power/lock button doesn't wake the phone, screen stays black and I have to pull the battery. If I call the phone while it's in this state, nothing happens on the Bionic's side, but the phone I calling from hears 4 rings before going to voicemail. I've uninstalled Widget Locker and Home Switcher to see if either of them are the culprit.
awesome, thanks
I would do a factory rest and see if it was a software problem first.
Sent from my DROID BIONIC using xda premium
Do you have in pocket detection on under settings? Try turning that off. I was having major issues like that when I was using that setting.
quentin0 said:
Do you have in pocket detection on under settings? Try turning that off. I was having major issues like that when I was using that setting.
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Good advice, the pocket sensor on this phone is borked.
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If your screen doesn't turn on or you think it doesn't charge, look here

I just received my nexus and I thought the battery was dead cause it showed the battery icon briefly. I left it charging for an hour and nothing. I tried the flashlight trick on the screen and I could see the welcome screen. I disable the automatic dimming feature and now my screen turns on. It must be a software issue on the sensor. I don't know yet.
So you shine a flashlight at the ambient light sensor and it turns the screen back up? Like the sensitivity of the sensor is too low? I'll have to make a mental note of this for when mine finally comes in.
Yes if you can't see the screen. If it still doesn't work, shine the light on the screen and you should be able to see the welcome screen. I don't know if you ever had your laptop LCD inverter burn out?
Thanks for this post. I had the exact same problem. I struggled to get up and running, but figure it out with the help of my GNex.
WG
Thanks for the info.
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
mewantnexus7 said:
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
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Do a search for light sensor, and you'll find other people with this problem.
WG
True, I can't even see youtube in landscape mode cause the screen will shutoff. I have to have it in portrait mode.
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
mkiker2089 said:
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
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So when you walk outside to the bright sun, you would want your tablet's brightness to be at the lowest setting? I doubt it

[Q] Disabling back lit soft keys on screen touch

Yesterday i was looking for some app to notify me via LED about missed calls/other messages. Installed an app (don't remember app name) from Play store and immediately i observe that soft keys lit every time i touch the screen. It's very annoying. Problem remains same after uninstalling the app and today i flashed to V_10H but problem still exists.
Help me to resolve the problem also recommend any good app to notify the missed calls/messages.
Thanks
When the screen is on this is normal, but it happens when the screen is off also I think?
Just a guess, but try this:
Go to the soft key settings, set it to always on.
Then set your screen brightness on automatic.
Reboot and put the settings back to what you had first.
Reboot.
This helped with soft key light problems in V10F.
Arne_B said:
When the screen is on this is normal, but it happens when the screen is off also I think?
Just a guess, but try this:
Go to the soft key settings, set it to always on.
Then set your screen brightness on automatic.
Reboot and put the settings back to what you had first.
Reboot.
This helped with soft key light problems in V10F.
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Thanks for response. I followed your steps..problem still exists.
This happens only when screen is on. I don't think its normal to lit soft keys when ever i touch main screen. I haven't noticed this until i installed app.
If it lit's up whenever i touch the screen doesn't it affect when i play games/seek video?
matrixddl said:
This happens only when screen is on. I don't think its normal to lit soft keys when ever i touch main screen.
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It's always been like this for my phone.. When the screen is on, and the soft key lights are out, if I then touch the screen again they light up.
You can either disable the soft key lights or enable them to light up constantly, like I do now.
Arne_B said:
It's always been like this for my phone.. When the screen is on, and the soft key lights are out, if I then touch the screen again they light up.
You can either disable the soft key lights or enable them to light up constantly, like I do now.
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very annoying feature..Why does it light up when i press screen? Do i have to turn on and off when i play games?
Hope dev's come up with a solution.
Thanks
I checked on my friends Sony xperia which doesn't light soft keys when touched main screen.
Sent from my LG-P880 using xda app-developers app
They can be disabled I n settings
Sent from my LG-P880 using xda app-developers app
matrixddl said:
very annoying feature..Why does it light up when i press screen? Do i have to turn on and off when i play games?
Hope dev's come up with a solution.
Thanks
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does this happen even playing games or apps that controll screen light? Have you tested?
Playing nfs mw lights still off...... so yeah good
Sent from my LG-P880 using xda app-developers app
Subhajitdas298 said:
does this happen even playing games or apps that controll screen light? Have you tested?
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I don't have apps that control screen light. I tired playing games like Bubble Words and light turns on every time when i touch screen. So i set lights to off always.
When the phone was new, i was on V_10e and i didn't have this problem. I installed some stupid app and it changed everything. I have upgraded to 10H but still problem exists and no way to prove that it worked earlier.
I don't get the logic behind lights on when i touch main screen.
Thanks

Screen Flickering On low light?

My screen flickers sometimes in the power saver mode n also when my brightness is set to about less than 40%. Should I be worried or it can be fixed in the software update? Anyone else with the same problem?
Sent from my HTC_Amaze_4G using xda app-developers app
Can you check for me if changing to another keyboard solves this flicker? I too noticed this ever so slight flicker but only when using stock keyboard if I change over to Swiftkey then it doesn't happen for me. It looks like its the screen flickering but in actual fact it seems to be just the keyboard area of the screen.
Report back if it fixes the issue for you. If it does then obviously this is software and we needn't worry.
sprint htc one user here. stock not rooted.
ive seen this obvious abrupt dimming since day one (had since launch). i use swiftkey only and no other keyboard.
when the screen is not in use i still see the screen dim. it dims abruptly as opposed to a gradual dim. i chalked it up to software that may be included in an update.
does NOT do it ALL the time though....
Well I tried with SwiftKey it didn't work. It's not just the keyboard are that flickers. It's the whole screen like trying to adjust to a particular brightness. If the brightness is set to about 70% there is no flicker
Sent from my HTC One using xda app-developers app
i guess this screens use PWM:
http://forums.androidcentral.com/htc-one/272432-htc-one-screen-issue.html

Active Notification inconsistent

I don't know if others are having the same problem but I have a stock phone not rooted and active notifications enabled
Every time I place my phone upside down and then a few seconds later turn it over it will show the time..no problem...everytime
On the other hand if I leave my phone aside faced up ..after the screen goes black I would say 8 times out of 10 the clock shows up when I pick up the phone.. I'm assuming the sensors know that the phone has been picked up a d activate the clock display....sometimes the screen remains black even after picking it up and giving it a gentle or hard shake.....bug ?
Sent from my XT1058 using xda premium
I too am experiencing this especially when there are no notifications which seems like a waste to me.
Can you guys check your sensors? Maybe something's broken. I'm having sensor issues myself, and have noticed inconsistent notification behavior as well.
Sent from my Moto X
I don't turn my phone upside down. But just sitting there face up it it completely and randomly light up the notifications
Sent from my Nexus 7 using xda app-developers app
blkkouki said:
I don't turn my phone upside down. But just sitting there face up it it completely and randomly light up the notifications
Sent from my Nexus 7 using xda app-developers app
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That's normal behavior.

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