no sensors showing up an severe lag, please help! - Galaxy S 4 Q&A, Help & Troubleshooting

Hello people,
today i encountered a strange behaving of my i9505 (100% stock),
suddenly the sensors stopped working at all (CPU-Z shows name, but no values of the sensors)
and there´s a massive lag when waking up the device from deep sleep and putting it into it with the power button.
Have anybody experienced this before /knows a solution?
i´m so thankful for answers!
/edit:
i tried:
# a factory reset from the settings menu
# wiping data/factory reset / wipe cache from CWM
greetings, klaus

Anyone?

I had the same problem, sensor were not working at all. I've sent the phone for warranty repair. They have changed motherboard and sensors.
Wipe didn't help mi either

The strange thing is ALL of them stopped working. *#0*# sensor test just shows freezed values

very possible motherboard problem. it is very unusual that all sensors stop working at once.
you should sent it to repair...

http://forum.xda-developers.com/showthread.php?t=2428732
This guy has exactly the same problems like i have, but he explained it way better...

Issue
eweu said:
http://forum.xda-developers.com/showthread.php?t=2428732
This guy has exactly the same problems like i have, but he explained it way better...
Click to expand...
Click to collapse
Most likely a Motherboard problem.
Claim your warranty.

Okay i'm sending it in today...
thank you guys for your answers and i hope you have more luck with your device.

Same here....

Hi there. I had same problems and sent phone to service. Its hardware issue. They've changed mainboard!

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Hey guys,
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Its behaving as if its power button is continuously pressed even when i am not touching the tablet or sound / power buttons. Its operating on its own to restart, bring power menu in every situation i put it in, like in system standby condition, powered down condition or in bootloader or even in CWM recovery. Its operating function corresponding to power button.
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Sent from my AUXUS Nuclea N1 using xda app-developers app
Ain't nobody faced such issue ever? Please guys i need some inputs.
So far i tried disconnecting power/ volume button strip/ cable from motherboard and let it idle for sometime. Even tried booting with that strip removed, but it didnt solve the problem. So my thinking of this strip being the culprit is wrong (from my understanding).
Thought of giving an update to this issue..
Dismantled N7 completely taking help of youtube videos. Booted back up and problem persisted but with extreme low frequency. i.e. power command executed on its own after a long time. So used tablet for half and hr, updated it to 4.4.2 which was not possible in the condition it was in before. Later problem aggravated to initial level again. i.e. continuous restart, no operation possible.
So left tablet in powered off condition for a day. Switched it on again. And could use it for same half an hr without facing any problem. After that problem started troubling again.
If anyone can think of resolution, would appreciate assistance.
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Another pleasant update.
Tab was lying unused for months with battery fully discharged. And later when i checked at random without even expecting any change in its condition..... it started perfectly.
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Phone works but backlight of the screen doesn't

Hello,
As you can see my issue is related to the screen... backlight always worked until some days ago where it failed somehow.
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My guess is that it has to be repaired but if there is a small chance it can be repaired from my side without opening it I'm willing to try it, otherwise it goes to reparation
[EDIT]
Apart from this issue the phone is working just fine, I mean it boots correctly, can enter in download/factory reset mode if I want too.
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[/EDIT]
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[Q] Not able to Hard Reset and Ghost Touching

Bought my G2(D802) a week ago and updated it to 20b that day. Since then the only issue I had was a screen problem. I ticked "Show Touches" from Developer Options and observed. Twice a day, a ghost finger touches the screen. I can see touching dots and it makes it randomly on the screen.
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Thank you.
UD97 said:
Bought my G2(D802) a week ago and updated it to 20b that day. Since then the only issue I had was a screen problem. I ticked "Show Touches" from Developer Options and observed. Twice a day, a ghost finger touches the screen. I can see touching dots and it makes it randomly on the screen.
So, I thought that Hard Reset may can solve this cause it seems like a software problem and I couldn't find anybody who suffers from this problem on the internet.
Not lying, I tried to hard reset like 40 times but nothing was happening every time. I tried both: Reset for before 20d and the one for 20d. Nothing was happening. I watched all videosi doing everything right but still same.
So I have 2 problems as you can see: Screen ghost touching and not be able to hard reset.
Should I send my phone back to warranty?
Thank you.
Click to expand...
Click to collapse
Hello, maybe your screen digitizer it's faulty...i had an s3 and i had the same problem,i send it to service and they replace digitizer,screen and the problem disappears !!!!
pk940 said:
Hello, maybe your screen digitizer it's faulty...i had an s3 and i had the same problem,i send it to service and they replace digitizer,screen and the problem disappears !!!!
Click to expand...
Click to collapse
Thanks for your answer. You mean that changing the digitizer can solve my Hard Reset problem too?
UD97 said:
Thanks for your answer. You mean that changing the digitizer can solve my Hard Reset problem too?
Click to expand...
Click to collapse
No thats other story first can you set it in recovery mode if yes you wipe data/system,
and if this dont work restore your phone with official lg support tool,,,,at last if nothing happend send it to service!!!!

Note 4, n910W8, Vibration not working!

Hi,
My Note 4 vibration stopped working suddenly without any apparent reason.
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Any ideas?
No replies? I am kind of stuck without vibration!
you should have taken your sevice to claim warranty in the first place, if not a faulty vibrator, the prob must be in the card
ahmadmmarmalik said:
Hi,
My Note 4 vibration stopped working suddenly without any apparent reason.
I tried a factory reset, reflashing stock rom, still nothing.
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Any ideas?
Click to expand...
Click to collapse
Were you able to figure out how to fix this issue?
ive got the same problem is there a fix for this like a new vibration part?

fingerprint sensor dont work plz help

guys iam on offical nightly cm 13 everything where good till my phone suddenly keep vibrating and minmizing the apps by itself then it soft reboot and boom my fingerprint sensor dont work again i tried *#808# and gives me failed
i found alot of method all not work for me
i tried drain my battery
i tried clear cache and reset
i tried cleaning the sensor
i tried even waiting for it to work
iam sure it's software problem cause my sensor was clean and nothing touched it when it stopped working plz help me guys
Mine done the same thing
I tried every thing you did and noting worked for me either. I have tried contact cleaner and that did not work. Nothing is working.
New fingerprint sensors goes for $7 on aliexpress, I bought two to have one spare when it dies again.
Clean flash oos3 I think there's a several level of failure.
Software
Hardware failure because moisture
Hardware completely dead
Try RMA
Sent from my ONE A2005 using Tapatalk

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