Database Info

Screen going black

I've tried various different ROM images (including the excellent Dr.Gonzo), and I have this problem with all of them.
When I'm using the phone either with the keyboard in or out, the screen just switches off randomly. If I wait a few seconds (possibly the backlight timer length), then it comes back. Mostly... Othertimes I have to wait a lot longer, but it does always come back.
A reboot sometimes fixes it, but not always - does anything survive a reboot or battery removal?
Anybody else seen anything like this? I have seen a lot of threads about the screen staying on, but not off.
Of course, it could be a hardware fault, but because it's intermittent, it's hard to prove.
Mike

same problem

If you shake the phone can you re-produce this problem? I've never not heard of this being affected by software - you might also want to ensure you're not overclocking it.
Nothing is removed when you do a battery removal or reboot, ensure your connections are all tight and make sure the SIM pins are all making contact and the SIM door closes, apart from that it sounds like a possible bad LCD ribbon.

Shaking it doesn't reproduce the problem.
Once the phone has started doing this, it happens everytime you press a key.
Seems more like a memory leak to me since it always seems to happen after a while of web browsing/email use.

So actually, it looks like it might be a hardware fault.
I think it happens when the device gets warm. After a few minutes with the screen on, keyboard lit up, wifi on, the phone gets pretty warm and that's when the screen seems to go black. Leave to cool and all returns to normal.
Mike

Same issue here, but the screen does not acually go black/blank it just seems that the screen backlight does not turn back on from a standby like state, the phone itself functions but just not able to see whats going on on the screen.
(keyboard lights work fine and come on when expected)
Not sure about the heat theory as it happens (to me) most often right after a call, anything over 30-50 seconds and the backlight problem occurs, when it decides to work again is a matter of luck.
As said before because it's intermittent, it's very hard to prove.
Has anyone who has had this issue, fixed it with a hard reset ?
Very strange ... but also getting very annoying now!

i got the same thing. took it back to warranty and they said nothing's wrong with the phone but i still get this.

I experience the same problems.. it happens pretty random, but every time when you hit a key. I have set all timers to never but the problem is still there.
Running Gonzo 1.1 at the moment, upgraded from guava.. but that didn't solve the problem.
It is getting so annoying now that I am about to throw the s710 in the dustbin

I have had the same problem!
I have turn it back to my provider and no problem now.

i have the same problem with my VOX
apparently, i can still receive phone calls, and do whatever i want with the phone,
but the screen just stays black, its like if you have unplugged your monitor
since i dont have a htc center in my town or anywhere else nearby.
does anyone know a way on how to open the phone, change what need to be changed and correct the problem? im all up for testing if that would resolve this annoying problem :s
cheers everyone

there is a dismantling manual somewhere in this forum. search.
i don't think taking it apart would help you because this is not a physical fault that you can locate.
and i learned that mcel is the retail seller of vox in mozambique. they should be able to help you with service. else just send a mail to htc support and they will guide you.

yes, mcel are the retail sellers, but i tried to go there, and there are no specialists on htc's there,
the thing is, i didnt bought my htc from them, so i can't go there and change for another one
but tks anyway

no problem
but do try to contact htc support by email. they might suggest a way.

I'm having exactly the same weird problem and I think I found some pattern when it occurs. Well, the thing is that in the bright day or in a room with lots of light it works just fine. In the darker conditions… well… not so fine. It seems to me that this screen blackout happens whenever the keyboard light is on and screen changes to full brightness (in the dark, because of the light sensor). In the daylight, keyboard light doesn't turn itself on, so s710 works. I don't know much but this definitely isn't some bad contact problem. Maybe some battery problem, but I doubt it since I can receive phone call in this condition. This started to happen after I flashed this Windows Mobile 6.1 ROM from HTC (I have original S710). Flashing Dr.Gonzo's later on didn't bring any luck either. I believe that some power control SW is the main culprit. I've read that many people mention some Tornado Power Control app. Does anybody know can this application be permanently disabled or removed?

are you trying to say that by desabling the light sensor, the problem might go away?
i would also like to know if it possible to have the baklight on the lowest possible brightness forever, because it seems, on a low brightness the problem might go away

petlof32 said:
I'm having exactly the same weird problem and I think I found some pattern when it occurs. Well, the thing is that in the bright day or in a room with lots of light it works just fine. In the darker conditions… well… not so fine. It seems to me that this screen blackout happens whenever the keyboard light is on and screen changes to full brightness (in the dark, because of the light sensor). In the daylight, keyboard light doesn't turn itself on, so s710 works. I don't know much but this definitely isn't some bad contact problem. Maybe some battery problem, but I doubt it since I can receive phone call in this condition. This started to happen after I flashed this Windows Mobile 6.1 ROM from HTC (I have original S710). Flashing Dr.Gonzo's later on didn't bring any luck either. I believe that some power control SW is the main culprit. I've read that many people mention some Tornado Power Control app. Does anybody know can this application be permanently disabled or removed?
Click to expand...
Click to collapse
I also have this problem with the lightsensor turned off. And also at (as it seems) random moments.

well, even with the light sensor turned off, the problem persisted.
i got my phone to a repair shop of htc's, and they figured out the problem
my phone is now 100% thankfully, the repair man told that the problem was because of bad or malfunctioned circuits, he exchanged them with new ones, and the problem went away,
dont know wich circuits exactly, and he didnt want to tell me, but i suggest anyone having the same problem to try and do the same
probably its a hardware malfunction with these VOX,
its possible since so many times before i've heard about malfunctioned pieces coming out in large quantities for sale.
anyways, cheers everyone, and good luck Portugal in EURO!

I have the same problem. I just noticed that it usually happens when the phone is warm, so if you need to do something on my phone just... take some ice from fridge and put it on back of your mobile. I cant see any more solutions.
Please someone help us!

Update. Problem Solved
Just thought I'd update this thread I started.
I sent the phone back to my dealer (Grapevine in Poole,UK).
A week later, I got a brand new one back from the HTC repair centre.
So far, so good. Looks like the problem's solved.
Mike

Sam problem here,
i called with HTC and they sent them to there repair centre.

[Q] Screen won't stay off!

I can't turn my screen off. When I press the power button it goes off for 0.5 to 3 seconds and comes back on. I was using Axura when it first happened, but then I restored an older CM rom and I'm having the same issue. Has anyone else had this problem? I'm sure I don't have to add that it isn't ideal for battery life ..

cavved said:
I can't turn my screen off. When I press the power button it goes off for 0.5 to 3 seconds and comes back on. I was using Axura when it first happened, but then I restored an older CM rom and I'm having the same issue. Has anyone else had this problem? I'm sure I don't have to add that it isn't ideal for battery life ..
Click to expand...
Click to collapse
Are you plugged in when it is happening? If so, have you tried to turn off the "Always stay on" setting?

I had this happen to me. It turns out it was a faulty power button. Its a hardware issue. I had to return my phone because I was still in the 30 day window, if you're outside of that you need to send it in to samsung.
Sent from my Nexus S using XDA Premium App

Thanks for the replies.
Strangely enough the issue disappeared as quickly as it appeared about 6 hours after it began! I tend to agree that it's a hardware problem, but as long as it's not happening constantly I'm going to live with it (due to the fact that as an Australian living in Spain with a NS from the US I don't imagine a warranty claim would be easy).

A hardware problem wouldn't be my first assumption if I was on a custom ROM and/or had lots of apps installed.
If it happens again, I'd get a logcat recorder app or adb logcat session running on the phone and see what exactly it says goes on just before the screen wakes each time.

Oh ok. I tend to assume it's a hardware problem due to the fact that it happened on completely different roms. But the way that bug causing "artifacts" are sometimes left behind when changing roms doesn't give me confidence in that assumption. I really don't understand it.
I'll definitely give the logcat a go if it comes back. Thanks.

hi,
i am bringing back this thread from a few months back because it was the only one i found that showed the same problem.
i installed alogcat and attached a log file here. can anyone see if there's anything in the log that would be a software reason as to why it's waking itself? also, it doesn't shut itself off while this is happening. the screen will stay on indefinitely. i've had the phone for 6 months and this has become a new problem i would say in the last 3 weeks. i don't want to have to send it to samsung for a few weeks.
thanks for any assistance

Random reboot temporary fix?

So i've had random reboots starting on my phone recently and was thinking about ordering a replacement phone through LG here soon.
However, after speaking with a T-Mobile rep, they advised me that after hearing complaints about it, they've found (or heard of) a temporary fix for it, and it has seemed to stop MY random reboots too.
They're saying theres an issue with the software and the GPS crashing, a tmobile rep told me to just try and turn off the GPS option in the settings and, ONLY turn it on if its REALLY needed, and it should solve the reboot issue.
Now mind you my phone rebooted randomly about 2-3x a day. After following this very easy step, it no longer reboots AT all... and whenever i need GPS for anything, i just turn it on for those moments, then turn it back off.
( not sure if this has been mentioned before, but if it hasn't then give it a try, if it has then just hit the back button and continue on with your life )

Have tried that because I feel its probably partially GPS related too but I've had the phone reboot while GPS was off. I don't know if even using it for a bit seals your doom. What's weird though is I've never had a reboot while actually using the GPS including in Navigation for hours at a time. I think we just need a patch at this point.
javolin13 said:
So i've had random reboots starting on my phone recently and was thinking about ordering a replacement phone through LG here soon.
However, after speaking with a T-Mobile rep, they advised me that after hearing complaints about it, they've found (or heard of) a temporary fix for it, and it has seemed to stop MY random reboots too.
They're saying theres an issue with the software and the GPS crashing, a tmobile rep told me to just try and turn off the GPS option in the settings and, ONLY turn it on if its REALLY needed, and it should solve the reboot issue.
Now mind you my phone rebooted randomly about 2-3x a day. After following this very easy step, it no longer reboots AT all... and whenever i need GPS for anything, i just turn it on for those moments, then turn it back off.
( not sure if this has been mentioned before, but if it hasn't then give it a try, if it has then just hit the back button and continue on with your life )
Click to expand...
Click to collapse
Sent from my LG-P999 using XDA App

[Q] Accelerometers have stopped working

Hello all, having an issue with the accelerometers on my SGS5.
So, got it on Sunday. Had it home and doing the usual thing... installing apps and configuring services. Noticed the battery was being nuked... checked what was using it... and gsiff_daemon popped up. Er, little bit of digging and I think this might be related to the sensor suite. Honestly not entirely sure because I didn't dig overly deep.
Checked again a little later, and well... it was gone from the list, and the battery was performing much better. Unfortunately now the accelerometers don't work. I'm guessing the service crashed or something. Lived with it for a day or so, and late last night I did a full factory reset on the phone. Hey look, accelerometers are working again. Go to bed (around 3AM PDT after the eclipse) wake up this morning and the accelerometers aren't working again.
Is there any way I can check to see if gsiff_daemon has crashed (if that's even what I should be looking for). I tried a sensor testing app and at least confirmed that sensor data isn't being logged.
Any help on this would be greatly appreciated.

So, little bit of an update. It has to be a service that's crashing. Sometimes if I do a restart, the accelerometers will come back online and be working. Within the first few minutes they will stop working again.

So yea, one more update.
Doing a regular restart doesn't fix it. I have to do a soft reset (pulling the battery on shut down) for the accelerometers to come back online, and they still don't last very long. Wondering if this is an issue I need to take back to Sprint and get fixed. Hope not.

Probably software/app related.
The phones don't truly power off on restart/power off thus why the battery yank need.
I doubt you need an exchange but you can probably try factory reset.

bryanu said:
Probably software/app related.
The phones don't truly power off on restart/power off thus why the battery yank need.
I doubt you need an exchange but you can probably try factory reset.
Click to expand...
Click to collapse
So, found what might be the culprit... and it's something familiar to Note 3 users out there... com.sec.android.sviewcover seems to be the issue. I'm checking to see if disabling the lock screen solves the issue (it's something like a slow leak, or intermittent failure... resetting com.sec.android.sviewcover fixes it without a reset).
I'll post again with overnight results.

Arkanthos2015 said:
So, found what might be the culprit... and it's something familiar to Note 3 users out there... com.sec.android.sviewcover seems to be the issue. I'm checking to see if disabling the lock screen solves the issue (it's something like a slow leak, or intermittent failure... resetting com.sec.android.sviewcover fixes it without a reset).
I'll post again with overnight results.
Click to expand...
Click to collapse
So, went ahead and did a full factory reset on the phone. Even swapped the cover back to the stock back and the problem persists. Looks like I might have gotten a lemon. Going to take it to a Sprint store soon to get it replaced. Confirmed with the manufacturers own on-board diagnostic *#0*# that it's not just the accelerometers that are failing it's also the compass, barometer, gyroscope, proximity sensor, and HRM sensor. Kind of a bummer... but hopefully this thread will help anyone else out there having these issues.

WiFi just refuses to turn on

When I tap the WiFi toggle option, either from top menu or from the settings, it refuses to turn on. It is the exact problem being shown in the video I've attached at the bottom of this post.
Details:
- The phone is Mate 9 (MHA-AL00).
- I can't claim warranty.
- I've tried wiping the cache in recovery mode.
https://www.youtube.com/watch?v=Q-VfQrMA-4s

This is really strange. Today morning when I tried to turn on the WiFi, it just turned on as if nothing had happened. Really strange.

So weird issue.
Check whether you have some special network management app installed on your device which would block the WLAN feature.

Anyone found a solution here
Hello,
For 2 days now, I have exactly the same issue with wifi and Bluetooth. As soon I switch them on, they get switched off instantly.
I have tried to reboot, safe mode, cache wipe, full factory wipe, but no results. This happened a month ago but came back to normal by itself. But this time it won't.
I contacted Huawei, they told me that my phone comes from China, where they have only one year warrenty, so they cannot it fix it in France even if we have 2 years warrenty here! Super!
Do you have any idea or tutorial on how to purchase and change the wifi/Bluetooth antenna?
Thank you for your help.

Great I'm on a MHA-L29C567 (US) model and as of about a month ago the same thing started happening me. I thought at first it was a radio update and reset the entire device back to stock but now the device is doing the same thing and worse now randomly reboots.
Really frustrating because I really love the phone but for the rear color camera focus sticking and this issue now. Looks like I may need to abandon the phone.

Your motherboard is crapping out, there is no other fix but a board replacement.