[Q] Phone Shuts down automatically - Sony Xperia Z Ultra

Got my Zu a few weeks back. When in stock, this problem occurred randomly and extremely infrequently. Now, the phone is unlocked and rooted and currently in 757 (4.4.2). Now the frequency of the problem has increased many fold. Whats the problem? ... The device just switches off without any notification or alert!! Even when fully charged. I need to switch it back on (with the power button) when I realize it has switched off.
This switch off randomly happens at-least 3-4 times a day. I used the "catlog" app to see if any errors or failures are logged (which may cause the shutdown), but the log entries are so many and so many are generated that they just fly past for me to figure out anything. Is there any specific error that I may have to search for? Any ideas on how to approach the problem and maybe solve it? If it turns out to be a h/w issue, I can send it for service. But I need to ensure that it’s a h/w issue Any help will be greatly appreciated. Thanks!

Related

[Q] touchscreen randomly unresponsive

Hello, I'm a new android and xda user. I tried searching for a topic like this but wasn't successful. I've had my atrix for 3 weeks now and I've been noticing that the touchscreen goes through bouts of unresponsiveness but if i have to change the orientation or turn the screen off and turn it on again or just type with my other hand (screen wont respond if i press key with my left hand but will if i use my right and vice versa) the screen will start working immediately but that doesn't usually last long and I'll have to rotate my phone around multiple times to type a text when i have this problem. Is this normal or do I have a defective phone? I noticed that on the latest update they did mention something about fixing problems that causes the touchscreen to be unresponsive but i have not noticed an improvement. I believe this is more prone to happen when the battery is at 30% but it could just be me having selective memory. lastly, it doesn't seem to matter how much i'm using the phone. could happen when nothing is running and i'm just trying to send a text.
I'm using a stock phone with whatever is the latest update for it with att and no screen protector. Thank you for any help!
Similar Issue
I used to have a similar issue, according to the Motorola site they fixed that issue in the latest update..... version 1.57 or something?????
Well either way the problem still persisted for me until i tried out the GreyBlur rom.... ever since i've updated to GreyBlur 2.1 and haven't seen the problem since.....
Points:
1) Motorola knows about the issue.
2) GreyBlur seems to solve it... (for me)

[Q] Galaxy S3 lockscreen hang and also unresponsive blackscreen

Hey guys,
I know there has been a couple of posts like this that I have found through searching but none have actually found a solution, so instead of resurrecting a old thread I thought I would start a new one.
Basically I am having some issues with my new pebble blue (yey) S3 . I have found that sometimes when the phone is sleeping when I press the power button to bring it out of sleep the lock screen begins to hang. This is followed by a number of different things, the screen either glitches for a bit and then begins to work or it stays locked and needs a battery pull. As well as this I've found that randomly either when charging or not and the phone is sleeping it simply becomes unresponsive, staying on a black screen and needing a battery pull to fix (this has only occured a few times, the hanging lock screen occurs quite often).
I have done some searching and found little in the way of a solution or what the problem is, however I have found that when the lock screen hangs -if it begins to work again after glitching out the 'WIFI connected to ****' appears at the bottom of the screen. Anyway if anyone has any ideas or also recieves this problem I would really appreciate some help as it's driving me crazy and I'm unsure if it is a common S3 bug or a faulty handset, in which case I have limited time to RMA.
Cheers in advance
Hmm, sounds like a faulty phone to me. Try taking it back to get it exchanged for onother one. S3 was built to fly not crawl.
You'll want to go through a process of elimination to figure out when might be causing it.
Something you can try and test with (one at a time)
-turn on airplane mode
-turn off live wallpaper
-shut down all running tasks
-change your lock screen security method
-limit the number of widgets running on all the screens
-reduce the number of active screens
Probably other things you can try to pull out of the equation, but thats a good start
After looking up dial-a-phones returns policy it would seem that I have 28 days to return if the handset is faulty, so this atleast gives me some breathing room to try out any suggestions for fixes. I will begin to eliminate each of the suggested items above however as the lock screen problem is intermittent it make take a day so actually see if it has had an effect, which is annoying at the least.
On another note a numberupted of people are stating high battery life on their devices however mine doesn't seem to be as good and I do have power saving on as well as nfc etc. turned off. This makes me believe my handset could have a fault, but tbf I haven't allowed for a discharge to 5% and the recharging to 100% which I heare allows for optimisation of the battery.
EDIT**** I have changed the lock screen previously and found it had no effect on the problem and I do not have a live wallpaper in use.
Phone Freezing after reboot and auto wifi signal found on.
Same here, been happening the last few days after I installed Avast. Also, turning off and on the auto on wifi seemed to replicate the problem.
The phone will boot to the lock screen and freeze a bit, and sometimes the news ticker freezes, and then after unlocked, I try to turn off wifi signal has been found on the notification dropdown and then tries to auto connect to wifi, the phone will freeze up if I dont turn it off in time.
Once the auto wifi connect is off and reboots, then the phone will keep glitching up until it catches up processing alot of processes it was trying to do for about 1/2 hr. Also, if phone freezes up for too long, like after trying too many time of unlocking the screen while freezing up, the phone gets stuck at the lock screen and the phone almost overheated, in an area right below the battery. I had to pull the battery out to cool it off.
It seems to be a glitch in the auto wifi, especially if alot of resources are being used. Once Avast was on my phone about 1.5GB RAM is being used sometimes and since has really slowed the phone down. Going uninstall alot of apps.
JCrinage said:
Hey guys,
I know there has been a couple of posts like this that I have found through searching but none have actually found a solution, so instead of resurrecting a old thread I thought I would start a new one.
Basically I am having some issues with my new pebble blue (yey) S3 . I have found that sometimes when the phone is sleeping when I press the power button to bring it out of sleep the lock screen begins to hang. This is followed by a number of different things, the screen either glitches for a bit and then begins to work or it stays locked and needs a battery pull. As well as this I've found that randomly either when charging or not and the phone is sleeping it simply becomes unresponsive, staying on a black screen and needing a battery pull to fix (this has only occured a few times, the hanging lock screen occurs quite often).
I have done some searching and found little in the way of a solution or what the problem is, however I have found that when the lock screen hangs -if it begins to work again after glitching out the 'WIFI connected to ****' appears at the bottom of the screen. Anyway if anyone has any ideas or also recieves this problem I would really appreciate some help as it's driving me crazy and I'm unsure if it is a common S3 bug or a faulty handset, in which case I have limited time to RMA.
Cheers in advance
Click to expand...
Click to collapse
Same problem.
No problem if Wifi is switched off prior to sleep.
No problem if Wifi connection is still available.
Problem to lockscreen if Wifi connection is broken (move away from connected router).
Any suggestion?
sassorock said:
Same problem.
No problem if Wifi is switched off prior to sleep.
No problem if Wifi connection is still available.
Problem to lockscreen if Wifi connection is broken (move away from connected router).
Any suggestion?
Click to expand...
Click to collapse
Exactly the same here. Driving me crazy. I did root the phone using the Samsung Galaxy S3 Toolkit. I don't know if the problem also exists on non rooted devices.
S3 black screen after unlocking
Has there anyone experience S3's screen went on black? I have pebble blue S3 - GT-I9300. Cases when unlocking, answering an incoming call or attempting to turn off an
alarm? Mine happens when after unlocking the screen then it goes black and screen becomes unresponsive. It happens intermittently and even after 3 times of
reprogramming. I am now going to have it replaced. I am having a lot of troubles -- it exits on its own when im reading or composing an SMS; files were deleted after
restarting the unit, and an app opens up even not touching the scree. This is expensive and I am paying a lot just to experience this king of inconvenience.
DavidNieuwpoort said:
Exactly the same here. Driving me crazy. I did root the phone using the Samsung Galaxy S3 Toolkit. I don't know if the problem also exists on non rooted devices.
Click to expand...
Click to collapse
I also rooted my S3 a few days ago (with the S3 toolkit), and have had lots of problems with unresponsive lockscreens (I use PIN, because of exchange connection). It takes a few seconds or maybe up to as long a minute before I'm able to punch in the PIN-numbers. Before this the screen lights up but does not respond to input.
But the WiFi-connection issue might be what is the triggering factor, because after a boot it wotks just fine for several hours, if I'm not moving out of my current WiFi zone. First I thought it was either Secure Settings or Tasker that made my device lock up in this matter, but now as they are both uninstalled, the problem still occurs.
Are you running some kind of custom rom, or just the latest stock ROM, but rooted?
Flodas said:
I also rooted my S3 a few days ago (with the S3 toolkit), and have had lots of problems with unresponsive lockscreens (I use PIN, because of exchange connection). It takes a few seconds or maybe up to as long a minute before I'm able to punch in the PIN-numbers. Before this the screen lights up but does not respond to input.
But the WiFi-connection issue might be what is the triggering factor, because after a boot it wotks just fine for several hours, if I'm not moving out of my current WiFi zone. First I thought it was either Secure Settings or Tasker that made my device lock up in this matter, but now as they are both uninstalled, the problem still occurs.
Are you running some kind of custom rom, or just the latest stock ROM, but rooted?
Click to expand...
Click to collapse
Just the latest stock ROM but rooted. I've found out that turning off the wifi power safe mode fixes the problem for me. To do this:
- In the dailer enter *#0011#
- Press the menu key
- Select wifi
- Press the on/off button.
The wifi power safe mode will however be turned on during boot. So rebooting will set it back on.
*#0011# seems does the trick. But is annoying had to do this every time after power off (change battery, change Sim, flying).... Anyway to keep the setting?
I am also on stock Rom and rooted. Interested to know any non-rooted phone got this problem?
BTW. I found a quick (at least quicker than pull the battery) way to get out of the forzen lock screen (sometimes forgot to do the 0011 trick): press the power button (screen will Dim instead of OFF), then hold the home button for few seconds, as soon as you see the "menu" and "back" button lit up, the lock is un-freeze...
A permanent solution is appreciated for such an advance phone....
sassorock said:
*#0011# seems does the trick. But is annoying had to do this every time after power off (change battery, change Sim, flying).... Anyway to keep the setting?
Click to expand...
Click to collapse
Not that I know of.
Problem solved. For me anyway. Hope works for all of you having the same trouble.
My trouble begin with recent upgrade to LH3. My S3 was rooted by S3 toolkit v2.0. CWM installed was v4 something.
I un-rooted the phone. Uninstalled S3 toolkit v2.0. Re-installed the S3 Toolkit v5.0. Rooted the phone again (CWM become v6....).
I do not know it was CWM version caused the trouble or not. But my S3 is ok now.
I got it on my non-rooted phone, any additional solutions/suggestions? or service?
I found solution for problem . And my phone is working well. I downloaded rom file android 4.1.2 and flash my phone
JB 4.1.1 caused these WiFi issues on my phone
Jodatnia said:
I found solution for problem . And my phone is working well. I downloaded rom file android 4.1.2 and flash my phone
Click to expand...
Click to collapse
Exact opposite for me...never had the problem then since loading stock JB 4.1.1 with root I get lockups or freezes whenever WiFi is turned off or I leave my router's range. As soon as I disconnect from WiFi the whole phone freezes.
The *#0010# also locks up the phone when I turn off the WiFi power saving feature.
None of this happened before JB...and I replaced my phone with week via warranty due to this and the new phone does the exact same thing as soon as I upgraded to JB with root.
Any ideas?
Black screen / random reboot solution
Hi All,
I've had the black screen / random reboot issue for a few days. The only way to restore functionality on black screen lockup was to remove the battery.
I tried changing to Chrome browser and stopping the stock browser as suggested in some threads but it kept crashing.
I searched everywhere and most threads suggest a dodgy motherboard.
For me the issue was related to either a single PDF download via the stock browser or the fact I had quite alot of saved PDF files on my phone (S3 Stock firmware I9300XXELLA)
After deleting all the files listed in Internet downloads (look for Downloads with a green arrow Icon in apps) my trusty S3 has returned to normal. No black screen lockups, no hanging, runs like a dream!
I appreciate this may not solve everyones black sceeen issues but I haven't found any other thread with this solution. Hope it works for you.
Thanks,
Giz.
giz_zard said:
Hi All,
I've had the black screen / random reboot issue for a few days. The only way to restore functionality on black screen lockup was to remove the battery.
I tried changing to Chrome browser and stopping the stock browser as suggested in some threads but it kept crashing.
I searched everywhere and most threads suggest a dodgy motherboard.
For me the issue was related to either a single PDF download via the stock browser or the fact I had quite alot of saved PDF files on my phone (S3 Stock firmware I9300XXELLA)
After deleting all the files listed in Internet downloads (look for Downloads with a green arrow Icon in apps) my trusty S3 has returned to normal. No black screen lockups, no hanging, runs like a dream!
I appreciate this may not solve everyones black sceeen issues but I haven't found any other thread with this solution. Hope it works for you.
Thanks,
Giz.
Click to expand...
Click to collapse
Thanks for the tip...
Was this happening on JB for you? You mention stock firmware (not familiar with I9300)...so I am guessing it was ICS.
For me the issues are with JB and I had no files at all in the Downloads folder after a certain point when I wiped / formatted the SDCard...so I do not think my lockups were related to PDFs. But I did (and still do) have a ton of music and a lot of movies on the External MicroSD Card....and quite a few custom notification and ringtone MP3s on the Internal SDCard. Next time I load JB I will run it a few days with none of this media loaded....
Jodatnia said:
I found solution for problem . And my phone is working well. I downloaded rom file android 4.1.2 and flash my phone
Click to expand...
Click to collapse
For me this also worked. Resolved everything. (on i9300 int)
Boomer6345 said:
Thanks for the tip...
Was this happening on JB for you? You mention stock firmware (not familiar with I9300)...so I am guessing it was ICS.
For me the issues are with JB and I had no files at all in the Downloads folder after a certain point when I wiped / formatted the SDCard...so I do not think my lockups were related to PDFs. But I did (and still do) have a ton of music and a lot of movies on the External MicroSD Card....and quite a few custom notification and ringtone MP3s on the Internal SDCard. Next time I load JB I will run it a few days with none of this media loaded....
Click to expand...
Click to collapse
This is on JB 4.1.2, Phone had been updated to 4.1.2 for about a month. The issues started after a pdf download. Once all pdf's were deleted the handset works perfectly.
Giz

[Q] Couple Amaze Problems

Howdy! I peruse the forums quite a bit to figure out little fixes for my phone, but there are a couple problems that I haven't quite been able to find proper solutions for.
The first problem deals with the phone randomly shutting down (usually only when it's in my pocket). I've seen other posts regarding the topic, but the OPs usually stated that simply holding the power button would effectively turn the phone back on, or that the phone doesn't shutdown but rather reboots. My phone completely shuts down and requires that I take the battery out, wait 10-15 seconds, put it back in, and then hold the power button for an extended period of time in order for the phone to start up. The battery doesn't get extremely hot. It's usually around ~33-35C when it does this, but when I look at some of the other posts with similar problems, their batteries are ranging withing ~38-42C. I have seen that it may be a faulty battery, as shown in the other posts, but as I mentioned my problem is slightly different.
The second problem deals with streaming videos on browsers. Before the ICS update, I was able to stream videos on any browser, but after that OTA update I cannot. I have tried multiple browsers, including Dolphin, Firefox (my main browser), and Opera. I heard it may have to do with flash not supporting android anymore (after 4.0.x, whereas I'm only running 4.0.3), but I have checked my phone and I have Flash 11.1 already installed. The settings on my browsers are to enable plug-ins on tap (means that I would tap a video to start it, right?).
Lastly, as of now, I'm having a WiFi issue. It's not so much of an issue as a hindrance, though. Basically, I'm pretty much always in a WiFi zone, either being at home or on campus. When I get home from uni, WiFi automatically connects, no problem. When I'm at the uni, it will connect as soon as I get on campus, but when I walk from building to building, it loses connection and makes me reconnect. I go to hit reconnect, and it demands some credential password which I have never set. If I hit forget so that I can forget and reconnect to the network, it wants me to put in my screen unlock pattern. I draw the pattern to unlock it, but then it sort of refreshes and my pattern is gone and it doesn't let me continue with the process, so I have to go back to the home screen, back into settings, and clear credentials. Some posts said to continue to input incorrect passwords to allow a credential storage password reset, but that did not work. Some posts said to clear credentials, so I do that, but then I have to continuously type my login information whenever I move from class to class, which gets pretty irritating. The only way to connect to the WiFi is by disabling and reenabling the WiFi. Like I said, it's not a huge issue, rather a hindrance.
As for my phone specs, I'm not really a super tech so I haven't messed with anything. The phone is not rooted and is running Android 4.0.3. It is, however, unlocked, and I'm running it on ATT's network if that makes a difference.
Let me know if I've posted in the wrong section or anything, and if I have, I apologize. I'm not one for posting on forums, rather one to creep around and hopefully find solutions.
Thanks for your time.
Hi there.
I also want to join this topic:
1. my HTC amaze also shuts down randomly.
2. but the main thing is: can anybody help me with this WiFi issue? I can connect and use WiFi in the street, at McDonald's, at different places with public WiFi, but when it comes to connect to WiFi at my home or at other places where the WiFi is PASSWORD PROTECTED, my phone jams the network and i have to turn off WiFi on the phone and restart the WiFi router to have everything working again.
Somebody, please help
thanks in advance.
Don't know if I'm allowed to do this, but bump!
Powstriker said:
Don't know if I'm allowed to do this, but bump!
Click to expand...
Click to collapse
this is out of question phone is good. there must be way to solve this WiFi issue
418 Replies but not a single instance of input? There has to be someone that knows something about this!
Powstriker said:
The first problem deals with the phone randomly shutting down (usually only when it's in my pocket). I've seen other posts regarding the topic, but the OPs usually stated that simply holding the power button would effectively turn the phone back on, or that the phone doesn't shutdown but rather reboots. My phone completely shuts down and requires that I take the battery out, wait 10-15 seconds, put it back in, and then hold the power button for an extended period of time in order for the phone to start up. The battery doesn't get extremely hot. It's usually around ~33-35C when it does this, but when I look at some of the other posts with similar problems, their batteries are ranging withing ~38-42C. I have seen that it may be a faulty battery, as shown in the other posts, but as I mentioned my problem is slightly different.
Click to expand...
Click to collapse
Since you are stock, the only thing being that your phone is unlocked, I would say this is either a config issue or a HW issue. The simplest thing to do is to clean the battery contacts, as there is a small chance that something got on them and is causing the battery to drop out. You can also look at the battery meter in the settings menu and see if you have a sudden drop in battery power or if it entirely cuts out. May give some clues to what's going on. Finally the only other thing I can think of is to uninstall any apps that save power or mess with the power settings on the phone.
Powstriker said:
The second problem deals with streaming videos on browsers. Before the ICS update, I was able to stream videos on any browser, but after that OTA update I cannot. I have tried multiple browsers, including Dolphin, Firefox (my main browser), and Opera. I heard it may have to do with flash not supporting android anymore (after 4.0.x, whereas I'm only running 4.0.3), but I have checked my phone and I have Flash 11.1 already installed. The settings on my browsers are to enable plug-ins on tap (means that I would tap a video to start it, right?).
Click to expand...
Click to collapse
Streaming video doesn't work for me, it will for a couple seconds and then die. So now I just open all links in the youtube app, which isn't perfect but it's good enough.
Powstriker said:
Lastly, as of now, I'm having a WiFi issue. It's not so much of an issue as a hindrance, though. Basically, I'm pretty much always in a WiFi zone, either being at home or on campus. When I get home from uni, WiFi automatically connects, no problem. When I'm at the uni, it will connect as soon as I get on campus, but when I walk from building to building, it loses connection and makes me reconnect. I go to hit reconnect, and it demands some credential password which I have never set. If I hit forget so that I can forget and reconnect to the network, it wants me to put in my screen unlock pattern. I draw the pattern to unlock it, but then it sort of refreshes and my pattern is gone and it doesn't let me continue with the process, so I have to go back to the home screen, back into settings, and clear credentials. Some posts said to continue to input incorrect passwords to allow a credential storage password reset, but that did not work. Some posts said to clear credentials, so I do that, but then I have to continuously type my login information whenever I move from class to class, which gets pretty irritating. The only way to connect to the WiFi is by disabling and reenabling the WiFi. Like I said, it's not a huge issue, rather a hindrance.
Click to expand...
Click to collapse
This has got to be either a config issue or a bug in how your phone handles your uni's wifi. Your uni will have multiple wifi APs with the same SSID (but on different channels) so that you can walk around and still remain connected. My guess is that there is a bug in the wifi drivers that don't like what your uni is doing, but it's really hard to say since that stuff is generally pretty complicated...
If you can't get your power issue fixed easily I would recommend you factory reset your phone. Don't install any apps for a couple days and see if your problems persist. If the power one does then take your phone in for warranty repair. The wifi one could be a bug, which would mean a warranty repair isn't going to do anything for that so you may be screwed on that one. Unless you want to hack your phone and load a new ROM; there is a slim chance that an updated ROM will not have the same bug.
gripen40k said:
Since you are stock, the only thing being that your phone is unlocked, I would say this is either a config issue or a HW issue. The simplest thing to do is to clean the battery contacts, as there is a small chance that something got on them and is causing the battery to drop out. You can also look at the battery meter in the settings menu and see if you have a sudden drop in battery power or if it entirely cuts out. May give some clues to what's going on. Finally the only other thing I can think of is to uninstall any apps that save power or mess with the power settings on the phone.
Streaming video doesn't work for me, it will for a couple seconds and then die. So now I just open all links in the youtube app, which isn't perfect but it's good enough.
This has got to be either a config issue or a bug in how your phone handles your uni's wifi. Your uni will have multiple wifi APs with the same SSID (but on different channels) so that you can walk around and still remain connected. My guess is that there is a bug in the wifi drivers that don't like what your uni is doing, but it's really hard to say since that stuff is generally pretty complicated...
If you can't get your power issue fixed easily I would recommend you factory reset your phone. Don't install any apps for a couple days and see if your problems persist. If the power one does then take your phone in for warranty repair. The wifi one could be a bug, which would mean a warranty repair isn't going to do anything for that so you may be screwed on that one. Unless you want to hack your phone and load a new ROM; there is a slim chance that an updated ROM will not have the same bug.
Click to expand...
Click to collapse
Thank you very much for the in depth reply. I'll take a look at the battery connections some time tomorrow as it's pretty late today. Do you have any recommendations as what to clean them with? I heard erasers are pretty good cause they have the "stickiness" to pick up grime, but wouldn't the rubber inhibit connectability?
The video thing isn't too big of an issue, but eh, a fix would be nice. If there's nothing that's known of atm, that is fine as well.
As for the WiFi, I didn't know if it was a bug or something I could fix internally. It's good to know, though, that it's not something I seem to have messed up myself haha.
Once again, I greatly appreciate the response!
Powstriker said:
Do you have any recommendations as what to clean them with? I heard erasers are pretty good cause they have the "stickiness" to pick up grime, but wouldn't the rubber inhibit connectability?
Click to expand...
Click to collapse
The contacts won't be corroded because they are gold, however it could be either they aren't springy (ie they got bent) or that something is stuck on them. Just take a look, make sure they look fine and that they are making a good connection. It's most likely not the issue but you just want to rule that out, as it would obviously cause problems if your battery was being disconnected
So, as an update, I managed to fix the battery issue by actually turning my phone around in my pocket (Strangely enough, I found that if I keep the screen away from the leg and the power button facing up, rather than the screen towards my leg, the phone does not turn off.). All that's left is to find a fix for the video and WiFi. The WiFi problem has actually started to become more significant, as WiFi is no longer automatically connecting to my home internet anymore. Sometimes at uni, as well, the phone requires a complete reboot before it will reconnect rather than a WiFi off -> WiFi on reset. Any more input would be greatly appreciated ^.^
I had same restart Issue
I don't know why or how it works.
Just put a piece of paper below the battery and the restart problem is solved
Flash a kernel and see maybe the modules are messed up
Sent from my HTC_Amaze_4G using XDA Premium 4 mobile app
Battery
I don't know why changing how the phone is situated in your pocket would solve the issue unless you were somehow unknowingly keeping the power button pressed down for long periods of time.
I will say I had the same issue and my suspicions lead me to the battery. Indeed, I bought a new battery and the issue has been resolved. There must have been some sort of short or default in the battery I was using that would cause my phone to randomly shut down or reboot..

Screen turning black and won't respond

after exchanging my phone due to the reboot problem, im encountering a new problem
my screen sometimes turns on by itself, and if i try to operate it at that point, the screen will turn black and nothing is functional except for the soft buttons and the pull down menu, only restart will solve this
sometimes it will also just crash to black even without the screen turning on by itself scenario
does anyone have the same issue? i suspect this is a software problem
I just got the z5 last night, and experienced the same problem this morning. Turns out that if you give the power button a 'double click', the screen comes back on. So this solves the problem reported above.
HOWEVER, there must be a setting (I hope) which we can change, I find it very irritating that as soon as I make a call, the screen goes blank, and you have to double-click the power button to see what is happening. If anyone knows about such a setting, please let us know!
My screen went black about an hour ago.
After Hotspotting for 40ish minutes so I could use my iPhone on the way to work on the train, I tried to check this forum with my Z5C, the back of it was really hot & after a few minutes, the screen went black & the phone was unresponsive for around 20 seconds & then basically unusable once it came back on, for another 20ish seconds, due to lag.
meganeet said:
after exchanging my phone due to the reboot problem, im encountering a new problem
my screen sometimes turns on by itself, and if i try to operate it at that point, the screen will turn black and nothing is functional except for the soft buttons and the pull down menu, only restart will solve this
sometimes it will also just crash to black even without the screen turning on by itself scenario
does anyone have the same issue? i suspect this is a software problem
Click to expand...
Click to collapse
Did you ever find a resolution for this? it is driving me crazy, I've tried factory resets, software repairs via the Sony Companion and this still occurs, sometimes it won't happen for a week then sometimes it happens multiple times in a row even straight after a reboot. The fix that RohitMayor describes does not work on my device. This phone is really terrible compared to the Z3 Compact
I have the same issue. This pb occurs since i have update my phone to 6.0.1...
Any solution ?

Sensors stop working on Lenovo Yoga Book

Hi,
sorry for posting here without being a developer myself. It seems like nobody on the other boards knows enough about android to be able to help me with this particular problem - which is the most strangest problem with electronic devices I have experienced so far:
The tends to "loose" sensors after a while. This mostly happens when in sleep mode, but can also happen during charging, sometimes after half a day, sometimes after a few seconds. The following sensors are affected: Accelerometer (including auto rotation), light, magnetic field, orientation and GPS. The sound and battery sensors keep going.
Now, while this is very annoying, it is not really strange. The strange part is the following: Two times I thought to have found the problem and get it back working normally, only to learn better 2 days later:
1) when I uninstalled the Dolphin browser - which never really worked on this device - the problem disappeared for more than a day and I thought it solved. Alas, it returned about two days later. So, Dolphin may have been a cause, but something new jumped into its place after 2 days.
2) at some point, I decided to uninstall Smart Launcher 3, which I had installed right at the start. E voilà: problem gone, the sensors worked perfectly without a single glitch for 2 days. So Smart Launcher must have been the culprit, right? -> wrong! Two days later the problem reappeared, worse than ever! All it takes now is putting the tablet to sleep for ~ 1 minute and the sensors are gone. If I want to use the sensors, I have to either prevent the sleep mode or restart the tablet whenever I want to use it.
So far, I haven't found another solution to make it work for 2 days (or even longer than a couple of minutes). But anyway, it doesn't make any sense. Why would uninstalling an app make the problem disappear, but only for 2 days? Then the same story again, when uninstalling another app?
Any kind of hint or suggestion is greatly appreciated, I am desperate and have no more ideas what else to try. All pleasure in the device is gone, it's just frustrating.
Thank you a 7'200 times (seconds in 2 hours)!
- spitfire
It just got more weird. I figured out, that enabling the power save mode caused the tablet to work somewhat normally, meaning sensors would still work after sleeping most of the time.
But guess what: 3 days later even that workaround doesn't work anymore. Restarting the tablet brings the sensors back, but switching the screen off (sleep mode) for 5 seconds is enough to disrupt them, always. This doesn't make any sense at all. Why does the device always find a way to counteract my workarounds after 2-3 days? Is the thing alive and doing it on purpose? It starts to drive me really mad :crying:
Please, does anybody have an idea? I am looking for
ways to restart the sensors without having to reboot the tablet. There must be some service to kill and restart, right?
ways to identify the cause of the problem. There must be some kind of event log where the sensor crash and what happened before is recorded.
I am sure somebody must know about those things, at least in this forum. Otherwise I don't know what to do, I run out of workarounds, the evil device wins this battle and will soon target the world - welcome Skynet.
Thanks very much for any kind of help
Pesche
edit: I noticed that when the problem occurs, it takes the tablet longer to wake up than the few times when everything is fine. This indicates that there is something going wrong with the wake up process. It must be possible to see in some kind of log what exactly happens, but my sparse knowledge of android isn't deep enough. I already tried OS monitor to access the catlog and I do see some warnings (pink W), but they don't tell me much. E.g.: OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without. Or: Syste: ClassLoader referenced unknown path: /mnt/expand/.../com.eolwral.osmonitor... (which rather sounds like a problem of OS monitor itself than a problem of the system).
i installed termux... ran top... i see a /system/vendor/bin/sensorhubd
i assume thats the process not "waking up"
is there a way to monitor that? or to tell it to restart? so we dont have to reboot everytime.............
isak.sr said:
i installed termux... ran top... i see a /system/vendor/bin/sensorhubd
i assume thats the process not "waking up"
is there a way to monitor that? or to tell it to restart? so we dont have to reboot everytime.............
Click to expand...
Click to collapse
I think i found whats killing it: google play services... disable body sensors permission in settings-->apps-->google play services-->permissions--> body sensors
also uninstall mcafee.

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