Database Info

display problem, screen garbled and/or scrolling non stop and/or blank

hi,
newbie in this forum and newbie in using a phone running an operating system. please help.
bought the phone in late June 2008, received it before the month ended, installed TomTom Navigator 6 on it and tested the various hotspot around my place, happy with it and stashed the phone on a safe place in the closet as T-Mobile don't have 3G service. then last week I decided to get an ATT plan (can't stand the iPhone 3G ad) so I can tasted the blazing HSDPA speed.
last week on Wednesday I use the phone as a GPS to get me to a hotel I'm staying near the White House. it got me there no problem. then the next day, the horror started. I was trying to plot a walking course to many of the nearby "stuff to see" and the phone just sits there saying that it can't get a valid GPS signal. then I tried to go to Google Maps using IE. the screen started scrolling, literally scrolling, then when it stopped, whatever usually on the top ended up in the middle of the screen, the bottom ended up on the top, and the screen was "split" in 2 with the edges staying dead center. so I thought, ah, this phone is just too tired, it ran out of memory (as all windows always does ignoring how much ram you put, at least in my experience), so I press the power button to let it do the light sleep. when I turned it back on, the phone seems to work the problem out and I tested it by going online.... guess what, the screen started scrolling again and even adding "I can play dead". the screen is not responding to anything (touch, tap, swipe, rotating the scroll wheel, pressing the buttons) beside the power button that seemed to turn the display off. when I turned it back on, the screen just gives off some light on the sides, but that's it, the screen is blank. taking out the battery doesn't even fix the "blank" screen thing. the device seemed to work out the problem after I left it unused for about 2-4 hours, but then it started again when I tried to do anything (all I ever do with my Touch Cruise is going online via wifi and/or att data plan, plus using the phone as GPS).
even after resetting the phone to a factory default doesn't help (did it this morning via a representative guidance). so I'm stumped. within a week, the phone basically broke, then how about another year? will it become bits and dust?
anyone can give me advise? one representative I talked to said that I can get a replacement for the phone but the last one I talked to said that HTC only have an option of repairing the phone but not replacing one.
thank you to all who reads.

Really weird.
Try to get replacement, if not possible, get it repaired.
If hard reset / factory default did not help... It does sound to me like malfunctioning device.
On the other hand... is it provider locked device or unlocked one?
I guess it's unlocked, but I'm bit confused since you mention both T-Mo and AT&T...
I do hope that there's original ROM on it...

For what it's worth, my XDA Orbit II has just developed the exact same fault. I tries soft and hard resets, re-flashed with 6.5 rom and then a 6.1 version, all to no avail. It goes through the boot sequence and asks for a screen calibration - if you ignore the scrolling screen and tap in the right places, the calibration is accepted (which makes me think it's not the digitizer. The screen itself seems to be fine - no missing pixels, cracks, - it displays everything it should only with a constant vertical scroll. If it had a vertical hold knob, I could fix the problem.
Really weird, it was working fine this morning and after sitting in its cradle for a couple of hours it is now like this.
Any ideas as to how I might cure the problem would be gratefully received.

[Q] Another G2x noob, is my phone going to be a lemon?

I'm kinda hesitant to post this, because I know you guys go through great lengths to emphasize searching first. I watched the video when I registered, nice touch. More forums could use vids like that!
oh well, here we go:
I have owned an Iphone every since they where introduced to the market. I have been wanting to make a switch for a while now. I was very close to purchasing a G2x back in April when they came out, but I held off. Well recently, a coworker let me check out his HTC G2 and I was amazed at the functionality, features, and other misc items compared to my old Iphone 3GS. I was never a fan of the slide out keyboard, so I knew the G2 was not for me.
Last week, I just missed the free promo on T-MO's web site, so Instead I purchased a G2X locally. I was totally unaware of all the problems you guys where having, as the typical review sites never mention these issues.
I have owned the phone for 8 days, So far here is whats been a going on:
7-29-11 Purchased the phone from Best Buy, decided to buy from them since they where the cheapest out the door with out rebate. I hate rebates! lol
Right before I am going to bed, I plug in to charge, and the phone shuts off, I cannot get it to power back up. I did not know about pulling the battery, I thought it had just died. I was going to wake up the next morning and take it back.
7-30-11 When I woke up, I looked around online, and found out about removing the battery and putting it back in. Now phone is working again.
I was able to get the OTA update to 2.3.3, right after the update, I did a master reset.
8-2-11 I downloaded a "radio scanner" app, and the first time I executed it, the phone froze, requiring another battery pull. Afterwards, the app ran fine.
Those are the only 2 major issues I have had.
Here are a few other things I noticed:
Screen: No separation, very slight light blur around top corners with lit black screen. Does not bother me, and I can't really notice it 99% of the time.
GPS: I know some have been having issues with this, for me, The time to get an accurate fix can sometimes take anywhere from 5-30 seconds. Even with the stock toggle always turned on, I do not always have the GPS Icon in the top bar, I don't know if I am supposed to. Can someone please confirm this?
WI FI: Seems to be working like intended, no complaints there.
BT: I have nothing to pair with the phone, so I will probably never know.
Making calls: this is kinda annoying, I will look through my call log and select a person, I see the dialer initiating so I put the phone to my ear, but a few seconds go by and nothing.... I look at the phone and find myself looking at the call log again, like the dialer crashed? Also, during the conversation the screen will turn off. I think this is normal, but when the phone detects motion shouldn't the screen turn back on?
Other than that, I love this phone so far. However, I do not want to swap handset after handset, refurb after refurb with T-MO or LG.
Is it possible that the phone will NOT continue to get worse as time goes on? Or should I take the first shut down as a sign of whats to come in the future? I have a 6 days left to take this thing back, but I am having a major conflict with myself about keeping it. What makes it even harder, Is I have already ordered a 32g micro SD, Trident case, and 3 extra data cables.
My plans are to root it, and run some sort of rom with it once I read up and half ass know what I am doing.
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TLDR:
Have owned phone for a week. Shut down instantly the first time I charged it requiring a battery pull. Froze/crashed due to an app maybe Second battery pull.
Question a few functions but otherwise works like a champ.
Purchased case, micro sd, extra data cables.
thinking of taking it back and cancelling contract to avoid future headaches, but not sure if I should or want to at this point. need avdice please!

Doesn't sound like a lemon. The stock software is buggy. If you're gonna root it and flash another rom then you're gonna love this phone.
The GPS indicator is normal. It only shows when an app is using GPS for your location. Otherwise it doesn't show.
G2X CM7

It doesn't sound like a lemon to me either. I bought mine in April and my phone had a few reboots while charging overnight and two freezes in the first month. It has been OK since then, although I did not do anything about it (and I'm still on Froyo). The only thing I do is that I reboot my phone manually once in 7-10 days because the phone starts to lag. I believe this is normal for all smartphones including iPhone...or am I wrong?

Oh, forgot to mention when I hit the power button to wake the phone and go to the lock screen, I briefly see the last screen I was in before the phone went into sleep mode. Total lack of QA in my opinion... Will a rom fix this?
And yes Man of La Mancha, the iphone would get somewhat glitchy, but a reboot always took care of it. I didn't really have to reboot it too often, maybe once every 2 weeks or so.

HTXg2x said:
Oh, forgot to mention when I hit the power button to wake the phone and go to the lock screen, I briefly see the last screen I was in before the phone went into sleep mode. Total lack of QA in my opinion... Will a rom fix this?
And yes Man of La Mancha, the iphone would get somewhat glitchy, but a reboot always took care of it. I didn't really have to reboot it too often, maybe once every 2 weeks or so.
Click to expand...
Click to collapse
The lockscreen issue is a known bug. CM7, or any ROM with 2.3.4+ doesn't have that problem.

[Q] Nexus 5 screen showing colorful static

Has anyone come across this before? I was watching a video on MX Player not too long ago, and it seems to have resulted in a permanent colourful static for the phone.
I can't really tell if it's doing anything, but when I go through the motions of resetting it or booting into bootloader, the screen does not change at all.
Interestingly the volume buttons are still working, and if I press the area of the screen where I think the buttons are (e.g., the back/home/programs buttons) I get the right vibrations. Which leads me to believe my screen is broken, and that it's a hardware fault. I'm hoping pretty hard this isn't the case, as my phone is only two months old and it was a replacement for a 6 month old Nexus 4 which had stopped charging.
Anyone come across this before? I'm hoping there's a kind of solution somewhere out there... To make matters worse I bought this phone via a parallel importer AND I'm currently overseas and won't be back till the end of January.
Sigh. Photo of screen is as attached - please forgive the terrible quality as I had to use my laptop webcam.
Thanks in advance, everyone!

jono_nz said:
Has anyone come across this before? I was watching a video on MX Player not too long ago, and it seems to have resulted in a permanent colourful static for the phone.
I can't really tell if it's doing anything, but when I go through the motions of resetting it or booting into bootloader, the screen does not change at all.
Interestingly the volume buttons are still working, and if I press the area of the screen where I think the buttons are (e.g., the back/home/programs buttons) I get the right vibrations. Which leads me to believe my screen is broken, and that it's a hardware fault. I'm hoping pretty hard this isn't the case, as my phone is only two months old and it was a replacement for a 6 month old Nexus 4 which had stopped charging.
Anyone come across this before? I'm hoping there's a kind of solution somewhere out there... To make matters worse I bought this phone via a parallel importer AND I'm currently overseas and won't be back till the end of January.
Sigh. Photo of screen is as attached - please forgive the terrible quality as I had to use my laptop webcam.
Thanks in advance, everyone!
Click to expand...
Click to collapse
Only time I've seen something like this was when my integrated graphics card on my desktop overheated, everything still worked, but colorful static everywhere. I'd let it cool down for a while, chances are it was pretty hot when it did that, and see if high temps might make it happen again.

I just had the same thing happen. Phone had been in my pocket and I had just taken it out to check the time maybe 10 minutes before it happened. The only difference with mine was I bumped into a table and hit the phone in my pocket. It does have a case on it and there is no sign of damage at all such as a cracked screen or anything. The static only lasts for a few seconds and thats right after I force it to reboot. After that it just goes to an all black screen. My LED indicator light is still flashing at me telling me I have an email though so I'm not sure what the deal is.

Were you able to resolve this issue? I too just experienced this issue as well and my phone is currently unusable. Thanks!

Do a full wipe as in wiping the entire phone and making it as if you just got it out of the box. if it persist RMA
Sent from my Nexus 5

Hi, I broke my screen (really bad smash) and had have this static on my new screen. The new screen was apparently fully tested. When using the slim port i can display on my TV and the digitizer works fine, its just this same colour static on the handset. I am now waiting for a replacement USB flex (it was a bit bent in the break) and i expect the new USB flex will fix it. If not then its a bad screen.
Will post the results when i get the parts

Fixed!
Hi,
My new USB flex arrived today. I installed it and found my screen is working perfectly.
The first pic is the same colour static that the op had.. Second one is the USB flex board / ribbon. Ebay for 20 Euro. Please remember that USA users are LG D820 and Europe/rest of works LG D821. I think its important for this part as the aerials connect here ans they are different in USA.
Good luck everyone

zeebo1111 said:
Hi,
My new USB flex arrived today. I installed it and found my screen is working perfectly.
The first pic is the same colour static that the op had.. Second one is the USB flex board / ribbon. Ebay for 20 Euro. Please remember that USA users are LG D820 and Europe/rest of works LG D821. I think its important for this part as the aerials connect here ans they are different in USA.
Good luck everyone
Click to expand...
Click to collapse
Hi,
sorry for reopen the topic but I really need to know if change de USB flex solve this problem
thanks

Static screen and freezing
Hi All,
Need help here with my 6 month old Nexus 5. It has been pretty good with no issues but since last evening, it started behaving weird. The chronological events are as follows
1. While browsing on Chrome some websites were not scrolling intermittently. This was only in the browser.
2. After about 10 mins of the above behavior the entire phone froze and didn't release itself. I had to force reboot by holding the power button down for about 10 secs. When the screen came on, it was the static screen
3. I again pressed the power button a couple of times but no use. Held it again for 10 secs, then phone rebooted and everything was fine.
4. Continued to use the phone and everything was normal until this afternoon, when the phone again froze while browsing a website
5. Since then the phone screen shows the static and if I press the power button once, the screen switches off and press again the screen comes on with the display showing properly. I can now only perform one touch which is registered and the screen freezes. If I switch off and on again the next screen / action is shown which is the action I did in the previous touch. Every time it registers one touch and I have to switch off and on again to see the next screen. Sometimes the phone just shows static and I have to wait a few seconds (30 sec) before using it again.
6. If I make a call to my phone, I hear one ring and then it is busy tone like I've cancelled the call. However the phone does not show the incoming call.
My phone has been intact and is well protected with screen guards and case. There is no physical misuse / abuse of the phone. I managed to shut down the phone and enter recovery. Here as well it only registered one touch, though the phone was processing and moving the next step. I somehow managed to initiate a factory reset through the settings, but no use.
Now in about 2-3 hrs the phone has become completely useless. I'm uncertain what the problem is, all my touch inputs are registered and processed. The screen just doesn't refresh to the next and requires a power off/on. I picked up this phone in the US and now in India. So I can't RMA the phone and I don't have warranty for this in India.
Any suggestion will be greatly appreciated.

Madzy said:
Hi All,
Need help here with my 6 month old Nexus 5. It has been pretty good with no issues but since last evening, it started behaving weird. The chronological events are as follows
1. While browsing on Chrome some websites were not scrolling intermittently. This was only in the browser.
2. After about 10 mins of the above behavior the entire phone froze and didn't release itself. I had to force reboot by holding the power button down for about 10 secs. When the screen came on, it was the static screen
3. I again pressed the power button a couple of times but no use. Held it again for 10 secs, then phone rebooted and everything was fine.
4. Continued to use the phone and everything was normal until this afternoon, when the phone again froze while browsing a website
5. Since then the phone screen shows the static and if I press the power button once, the screen switches off and press again the screen comes on with the display showing properly. I can now only perform one touch which is registered and the screen freezes. If I switch off and on again the next screen / action is shown which is the action I did in the previous touch. Every time it registers one touch and I have to switch off and on again to see the next screen. Sometimes the phone just shows static and I have to wait a few seconds (30 sec) before using it again.
6. If I make a call to my phone, I hear one ring and then it is busy tone like I've cancelled the call. However the phone does not show the incoming call.
My phone has been intact and is well protected with screen guards and case. There is no physical misuse / abuse of the phone. I managed to shut down the phone and enter recovery. Here as well it only registered one touch, though the phone was processing and moving the next step. I somehow managed to initiate a factory reset through the settings, but no use.
Now in about 2-3 hrs the phone has become completely useless. I'm uncertain what the problem is, all my touch inputs are registered and processed. The screen just doesn't refresh to the next and requires a power off/on. I picked up this phone in the US and now in India. So I can't RMA the phone and I don't have warranty for this in India.
Any suggestion will be greatly appreciated.
Click to expand...
Click to collapse
I'm getting the same issue. Tried soft and hard reset. Opened her up and seated all cables. The issue is still persisting. Is replacing the USB flex the way to go?

Hey I have a nexus 5 32GB and the screen started to do weird things and now it isn't working at all. Its the same in recovery mode also do I think that it's not a software problem.
I think there is an issue with the motherboard. Please help me out.
Thanks in advance.

nexus565 said:
Hey I have a nexus 5 32GB and the screen started to do weird things and now it isn't working at all. Its the same in recovery mode also do I think that it's not a software problem.
I think there is an issue with the motherboard. Please help me out.
Thanks in advance.
Click to expand...
Click to collapse
Most likely the flex cable
ふかつどう

Anyone seen this colored screen?. I have been getting this past 2 weeks when phone is charging and screen is about to turn off. I am on stock not rooted.

bullorbear said:
Anyone seen this colored screen?. I have been getting this past 2 weeks when phone is charging and screen is about to turn off. I am on stock not rooted.
Click to expand...
Click to collapse
Looks like the daydream function. You can turn it off in Settings>Display>Daydream
Sent from my Nexus 5 Unchained using XDA Free mobile app

Same thing, Screen now black. Won't turn on...
Hey everyone, I know that this is kind of late to the thread, but I have what I believe is the same problem as everybody else here. I had my Nexus 5 in my pocket for maybe five minutes, and in between the times that I put it in my pocket and took it out again to reply to a text, the screen went all colorful and static on me (Red tint, almost as if I had twilight on, but I didn't). I tapped the back, and the colors went back to normal, but the digitizer wasn't responding to touch. Then, It went black. No color, the speakers weren't working, neither was the backlight on the display. I took it apart, and figured its either the USB flex cable (which looked frayed), or the mainboard. If its the USB flex cable, then I know I can repair it. If it's the mainboard... well, as a sixteen year-old who has no current source of income, I'm out of a $400 phone.
Pictures attatched. Thanks!

rikudo said:
I'm getting the same issue. Tried soft and hard reset. Opened her up and seated all cables. The issue is still persisting. Is replacing the USB flex the way to go?
Click to expand...
Click to collapse
I took the phone the LG service center and the technician seemed to know this issue and immediately said that the USB flex cable needs to be changed. The entire fix took about 5 mins and the phone is working fine since then.
Sorry for the delayed response.

I hate to necro up this thread but I'm having similar problems to the op with my nexus 5. About two weeks ago I saw my screen get grainy just like the op and many others mentioned and then the screen went completely black. The screen still "turns on" but it's just black with the backlight on. I can hear notifications and other things and I'm hoping that all I need to replace is just the flex cable. If it's a problem with the logic board then I'm screwed basically.
Anyway that's my story. Bought the flex cable and it'll be here by tuesday so I'll find out then if I'm lucky or not. Fingers crossed.

pezkiln said:
I hate to necro up this thread but I'm having similar problems to the op with my nexus 5. About two weeks ago I saw my screen get grainy just like the op and many others mentioned and then the screen went completely black. The screen still "turns on" but it's just black with the backlight on. I can hear notifications and other things and I'm hoping that all I need to replace is just the flex cable. If it's a problem with the logic board then I'm screwed basically.
Anyway that's my story. Bought the flex cable and it'll be here by tuesday so I'll find out then if I'm lucky or not. Fingers crossed.
Click to expand...
Click to collapse
Hey man, did you ever try this out and get it to work? I have the same problem and was thinking of trying this out but wanted confirmation first.
Thanks!

Just wanted to post here to say that this thread just saved me a lot of money!
Had the same issue (static showing on the screen). Local phone repair shop told me it needed a new screen, without even looking at it(!), and it would be £120 + labour. Told them I would think about it, and came home and did some more research, found this thread. Ordered a replacement USB flex cable from eBay, and fit it by following a YouTube tutorial, and now the phone is back working fine. brilliant!
Thanks xda!

I had a problem where my screen looked like an old CRT TV with particles flashing all over on anything with a static dark background. Any ideas

[Q] Screen goes partially blank

Hey, so I have this weird problem with my G Flex 2.
I got it around 40 days ago from U.S. Cellular.
I have run into this problem about three times now, and from what I can remember it always happens when I have music playing. I tap the screen on to the lock screen then let it go to sleep or turn it off myself. When I wake it back up the screen is all black except for a few millimeters on the top, where I can see some display.(*note, this doesn't happen every time)
I am able to scroll through the display but no pop up menus. Since the battery is sealed off in the back of the phone I can't use that fix, holding the power button only brings up the menu option to turn off the screen which doesn't do me much good since I can't use the screen.
If I wait for 5 minutes or so the phone will right itself, but I don't want this to be a persisting problem. I'm not sure if this problem is tied to the music playing, it hasn't happened when it isn't playing, but I play music on my phone quite often. (note* I am playing the music from my phone, not streaming)
If you need more info I'll do my best to provide it. This is all I can think of right now.
Honestly, I don't expect anyone to have a fix yet since the phone is fairly recent and not as popular. I tried looking under G3 forums since the UI is pretty much identical, but I didn't find anything.
Sorry, my post is a little wordy.
I'd appreciate any help anyone can provide. Thanks

Yes, this has happened to me twice recently too. Once the screen was completely black except for a bright white line at the very bottom, but the phone was still responsive behind the dead screen. The other time there was a distorted/ghosty notification bar showing at the top but nothing else (like what you reported). Then the problem would resolve completely and spontaneously after resuming from sleep a few times. I have the Korean model (F510S) which was a gift so I'm stuck with it - no returns or warranty available.
bonebeatz1234 also posted about a similar problem. Seems like a hardware fault?

The replacement phone screen was fine i had a different issue of over heating and had to return it . I opted to get another device the note 4. Didn't wanna go that route bit had no choice i loved the design and ui of the flex 2. I wished lg would of just ditched the 810

~~~
Hi, I encountered same problem here.
Is anyone able to send me a screen shot or a video of this problem.
As I need to use this to prove the situation and claim warranty from the seller, however I didn't take a photo or something when the problem happened to me.
please sent to [email protected] if you have the photo or video and many thanks~

Just had this problem also had a g flex 2 for about 21 days now and it happened to me after a restart in the car with a pinkish line at the top and the phone was completely responsive even though the screen was blank
I think it might have to do with heat cause I held it by the ac vent while I was reading this board on my nexus and when I looked back at the phone it was working perfectly
But I swear during my time with the phone it heated up way more than this time and this time the phone wasn't even hot
I reset the phone like 3 times before I held it to the vent and it didn't help at all
Using the att variant with android 5.1.1

Have the same problem every now and then, found a recommendation on another website and in the instruction manual to reset the phone by holding down the power button and volume down button for about 10 seconds or to turn it off by holding down the same buttons for 20 seconds. I find what works better though is to just leave the phone alone and it corrects itself within about 5 minutes.

Having this same problem. Happens once every couple of weeks. Any updates on this?

I think that this is a heat problem....everytime i left my phone in the sun, it show me this strange error.

I'm not convinced its a heat issue. I looked at my battery chart the last time it happened and it was barely over 90 deg. It seems it happens to me when it is charging PLUS doing something like streaming music or GPS is on. I need to start taking notes. I should have done that before.

this have happened to twice too. weird anomaly.

assyriska said:
I think that this is a heat problem....everytime i left my phone in the sun, it show me this strange error.
Click to expand...
Click to collapse
even you can show some errors if u stay on sun.
Inviato dal mio LG-H955 utilizzando Tapatalk

Having the same random issue. Today it happened and reboot would not fix (it usually does) finally after about 30 minutes the screen came back to normal. I now disabled lock screen in case I need to get data off the phone from pc ? in the case that the issue becomes permanent.
Sent from my LGLS996 using Tapatalk

although it's an old post, but worth to mention, that It can happen to all the LG Flex 2 models.
It is caused by a heat or inaccurate voltage. let me explain how it can happen:
heat - when you put the phone on the car's cradle under the car's front windows during a sunny day - it will happen.
voltage/heat - when you charge your phone and not using your original charger (eg chinese car chargers) - it will happen.
so what to do? I've noticed that putting the device over the cat's air conditioning , can reduce this to few minutes. also, if you can, mount your cradle over one of the air condition outlets and it will freeze your phone all the time

Phone face down, rings, screen black...

If I have my phone face down on a counter when it rings, when I pick it up the screen is black. Not off, as I see some light, but basically dark.
I cannot see who is calling...can't get it to display.
This actually happens a lot other times. Just now, for example, I just picked it up, and turned it on with finger print. I placed it face down, and picked back up immediately...screen black.
If I happen to have it on and brush the screen across my side, it will go black.
The ringing is the realy annoying one.
Any suggestions? I'm thinking it has to do with something about the proximity sensor sensing the screen against something...but it should let it come on when it's not against something.

Is noone else having this problem? Every time my phone rings, it turns on but stays black. I never know who's calling unless I answer.
I don't know what to do with it. Very annoying.
Hoping someone has a suggestion.

You could disable auto dimming on your phone. Use Lux from Play store instead.

Planet X said:
You could disable auto dimming on your phone. Use Lux from Play store instead.
Click to expand...
Click to collapse
Do you mean Auto Brightness? If so, that is not the problem. I have it disabled and am using an app for brightness control...not automatic.
I cannot find anything in settings about 'auto dimming'.
Thanks for the suggestion though...

You're right. I mean Auto Brightness, it does Auto Dimming too . B.t.w. I don't have this issue.

Planet X said:
You're right. I mean Auto Brightness, it does Auto Dimming too . B.t.w. I don't have this issue.
Click to expand...
Click to collapse
I'm beginning to think I am the only one.
Another symptom which I am thinking is related. Sometimes when I touch my finger to the fingerprint button to wake the phone, it comes on with that dark screen for just a moment. It feels like the phone is busy, overloaded, or just slow. It will then come fully on. Also seems like maybe it is just in deep sleep and slow to wake up. If I turn it off and back on, it is instant.
I check memory and it always has just under 1.5 GB free.
I don't know what to think, but it is very annoying. I thought about chalking Huawei support, but I'm sureo they'd just say to hard reset.
I do have a lot of apps on the phone, but with that much free memory I wouldn't think that should be a problem.

Another interesting thing related to screen dark: I can have the setting for display to not turn off if no actdivity to 10 minutes, and it still goes off after less than a minute. (Going off is different from the topic of this thread where it is near black/dark, but not off).
I discovered this while trying to use Huawei backup. Thinking of doing a Factory Reset. Instructions say to not lock the screen, so I'm trying to keep screen on w/o my having to hold the phone the entire backup.
This overall topic is making me pretty unhappy with the phone, which I had thought was perfection when I started with it.
sigh...

I finally called Huwaei technical support this morning. They apparently know about this problem, and want me to send the phone back for repair. They expect me to be without a phone for two weeks while this is going on.
It speaks to the reason to not buy phones away from carriers, as anytime I had a problem with my Samsung, they would send out a replacement and then I would send back my old one and I would not have to be without a phone.
Pretty poor .

AN update In case anyone is following this for some reason...
Getting ready to send the phone in, I did another factory reset. I had got to wondering if maybe Gravity Box had been part of my problem. May be the case...not sure. But for now i'm not having the problem. I changed some of the settings on it when I reinstalled. I cancelled the return.

I've had the odd time when the screen is on, but not properly backlit. You can just about make out the screen, but then the backlight seems to rectify itself. It isn't just the Mate 9, but the P10 and probably other phones. Doubtful a hardware issue I'd have thought - rather a software glitch.
The P10 just got an update earlier this week (yet still with April security patches) but my Mate 9 hasn't had an update in months.