can you confirm this? - Xiaomi Mi A3 Questions & Answers

when the phone's screen is off and locked, press power button and tap once on finger print logo (without unlocking), my screen start to blinking, it's like night mode on/off rapidly and goes away after unlocking

_ehsun said:
when the phone's screen is off and locked, press power button and tap once on finger print logo (without unlocking), my screen start to blinking, it's like night mode on/off rapidly and goes away after unlocking
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Same here. But it seems to be normal... Not bothering me at least.

Can't reproduce here

sherlock.holmes said:
Same here. But it seems to be normal... Not bothering me at least.
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thanks
It gets worse if you do this guide
https://forum.xda-developers.com/mi-a3/themes/app-oled-saver-flicker-free-backlight-t3989677
I have this issue from day one and i think it's hardware problem

_ehsun said:
thanks
It gets worse if you do this guide
https://forum.xda-developers.com/mi-a3/themes/app-oled-saver-flicker-free-backlight-t3989677
I have this issue from day one and i think it's hardware problem
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It's a camera under the screen. The reason the screen flashes is to take a picture of your fingerprint. It's not a hardware or software problem it's normal behavior.
How does your device take a pic of your fingerprint if it can't see it coz it's too dark

garylawwd said:
It's a camera under the screen. The reason the screen flashes is to take a picture of your fingerprint. It's not a hardware or software problem it's normal behavior.
How does your device take a pic of your fingerprint if it can't see it coz it's too dark
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there is no problem with finger print flashes and I know how it works
but there is color distortion after touch and flashes and same thing happens when i use oled saver app as mentioned
see these 2 screenshots before/after (it's not that much dark on my screen but you will get the point)

Related

capacitive button issue

This morning I started having an issue with my edge.
Whenever I touch the screen, both capacitive buttons light up. Causing for irregular behaviour when using the phone. Is there a screen calibration mode or should I return it for a new phone.
Mine does the same thing. I'm pretty sure that's standard.
Agreed. Sounds like normal behavior to me.
I fail to see how this is an issue?
It's an issue in the sense that previously on galaxy models they only light up when you press them. It's a bit ridiculous and waste of battery to have them lighting up every time you interact with the phone.
And for reasons unknown, every s6 excluding the att version has had the setting to turn off the lights removed.
paddylaz said:
It's an issue in the sense that previously on galaxy models they only light up when you press them. It's a bit ridiculous and waste of battery to have them lighting up every time you interact with the phone.
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That is not true.
The S5 cap lights also light up when you touch the screen. That is how it should work. It would ridiculous for it to NOT light up every time you interact with the phone (assuming you wanted them on at all).
It would be nice to have the option to turn them off. That doesn't make it an issue--more of a feature request.
paddylaz said:
It's an issue in the sense that previously on galaxy models they only light up when you press them. It's a bit ridiculous and waste of battery to have them lighting up every time you interact with the phone.
And for reasons unknown, every s6 excluding the att version has had the setting to turn off the lights removed.
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They really don't use any noticable battery.
cpshoemake said:
It would be nice to have the option to turn them off. That doesn't make it an issue--more of a feature request.
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If you enable power saving mode it turns them off FWIW.
Fix for this issue
Hi,
please check my reply in the S6 thread on the same issue: http://forum.xda-developers.com/showpost.php?p=60009456&postcount=12
Hi, I have the S6 Edge. The touch key lights are not working at all. In Settings I have the Touch Key Light duration set to "Always On". Power Saving Mode is off, but they still won't come on. The keys do blink briefly during startup, so I do know they physically work. Any ideas? Thanks
Some times my capacitive buttons stop working altogether. It happened to me twice so far. It lasts about a minute. No response no light, nothing. Anyone else?
asolo157 said:
Hi, I have the S6 Edge. The touch key lights are not working at all. In Settings I have the Touch Key Light duration set to "Always On". Power Saving Mode is off, but they still won't come on. The keys do blink briefly during startup, so I do know they physically work. Any ideas? Thanks
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Where are you finding the "Touch Key Light" settings? I don't seem to see them.
---------- Post added at 08:28 AM ---------- Previous post was at 08:27 AM ----------
mrnovanova said:
Some times my capacitive buttons stop working altogether. It happened to me twice so far. It lasts about a minute. No response no light, nothing. Anyone else?
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Yes, I am having the same issue. I thought it might be an app but I have removed all of them and it still happens. So annoying!! Even a reboot doesn't help.
Settings-Device-Display-Touch key light duration
Dr. Bamboozle said:
Settings-Device-Display-Touch key light duration
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that option is NOT on the 925T
wase4711 said:
that option is NOT on the 925T
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This is not on the SM-G925W8 version either.
Sometimes these buttons stop working all together and sometimes they both switch to become the task switcher button. The Back Key will no longer function to move you back a page! Very annoying. I am thinking the only fix might be a complete factory reset??
BTW, when this happens, something is loading in the background. Just before my buttons stop working, a get a very small vibration similar to when your device boots up. From that point forward the buttons don't work. It can last 1/2 hour or up to 2-3 hours before it clears itself up??
Update: I did a factory reset and it didn't do any good. There are literally thousands of posts on the web about this issue and no resolution. If you have this issue, I think you need to send your unit back.
I have a SAMSUNG-SM-G925A running stock AT&T Android 5.02
I dunno, received my Edge today and my capacitive buttons only light up when I click them.
I took my phone back today and Rogers very quickly gave me a replacement phone. Capacitive buttons working well on this one!!
Everything was working as expected and the two buttons (Back and running apps) stopped working, i made a factory rest and it did not help, I am suspecting the cover that have magnets in it and I removed it, shut down the phone for few minutes but it did not help, I will try extending the time it is shut down and see the results.
For those with button light issues try this app "Galaxy Button Lights". I'm not allowed to post external links here but you can find it in Google Play.

Xperia Z2 Blank Screen

Hello,
I have a very strange problem with my Xperia Z2. After unlocking the display on the device is blank. You can see the brightness, the touch works, because when I swipe my fingers I can hear android sound but there is no picture. I must do "lock - unlock" pattern 3-4 times, sometimes even more to get the display work properly. I tried to fix it by using software repair but it didnt work, and also
factory reset. Its just so iritating, I cant even lock my phone anymore, I try to keep the display on as much as possible if someone trys to call me so I can answer it. Device is currently running on Existenz ROM but the issue started on the stock so I flashed custom rom but it didn't help. So this is probably a hardware problem and if it is, what could be broken ( is it display, GPU,whatever ) or it could be a software problem ? Any help would be appreciated.
Can you see your lockscreen?
iXaidyiu said:
Can you see your lockscreen?
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No, no the "lock-unlock pattern" is reffered to simply pressing the unlock button on the phone. There is just blank display and light is on as I mentioned but no picture. After pressing button many times the picture finaly comes and then it's normal. It only happens when phone goes to sleep mode or after I lock it.
If your phone reboots can you see the SONY logo and the boot animation as well?
iXaidyiu said:
If your phone reboots can you see the SONY logo and the boot animation as well?
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Nope, there is nothing. Just a sound and LED works, and blank screen. Then again, when the phone finally reboots, pressing lock-unlock button will do the trick. It seems like, when I dont touch the phone longer time, it's harder to get screen on. But when I constantly work with the phone there is no need for that amount of "lock - unlock button move".
mby RIP graph.. try flashtools..
YamyYugi said:
mby RIP graph.. try flashtools..
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It's probably hardware, now it's just a question of repair cost and is it worth it ?
TechCODE said:
Nope, there is nothing. Just a sound and LED works, and blank screen. Then again, when the phone finally reboots, pressing lock-unlock button will do the trick. It seems like, when I dont touch the phone longer time, it's harder to get screen on. But when I constantly work with the phone there is no need for that amount of "lock - unlock button move".
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I think this is due to a faulty LCD screen, but the digitalizer seems fine. So maybe you could consult some local repair shops and prove if my hypothesis is correct. But first of all you should try also flashing another kernel (eg elite kernel) first to see if it is a software issue rather than a hardware issue.
Sent from my Sony D6503 using XDA Labs

Second screen very dim

Can I fix this? Thanks
melorib said:
Can I fix this? Thanks
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what do you mean by "very dim"?! too much brightness or too less?
i see mine get like "auto brightness" like see the screen set itself more brightness and less when in direct sunlight with auto mode disabled...
thats what i know so far...your problem will be like the same i think?!
Too dark, it doesn't change to brighter as it did before
melorib said:
Too dark, it doesn't change to brighter as it did before
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but in your brightness slider you can go to 100% brightness or you only can go to 90?%?
If you can go to 100 and anyway is too dark aybe you need to replace your screen because is faulty.
sun_is_shinning said:
but in your brightness slider you can go to 100% brightness or you only can go to 90?%?
If you can go to 100 and anyway is too dark aybe you need to replace your screen because is faulty.
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Thank you, today it is working fine again, I didnt change anything, maybe it needed to sleep on it
melorib said:
Thank you, today it is working fine again, I didnt change anything, maybe it needed to sleep on it
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ah ok, fine...only now i see what your problem, i think is the screen itself and not the second screen, if the second screen is too dim is because the sensor on the side of the top speaker can be dirty on it and it doesnt detect the light trough it...
if this happen again to see if they are some dirt on it simple with your phone locked put it under direct light above that sensor and if the second screen gets brighter then is ok, if not clean the sensor.
sun_is_shinning said:
ah ok, fine...only now i see what your problem, i think is the screen itself and not the second screen, if the second screen is too dim is because the sensor on the side of the top speaker can be dirty on it and it doesnt detect the light trough it...
if this happen again to see if they are some dirt on it simple with your phone locked put it under direct light above that sensor and if the second screen gets brighter then is ok, if not clean the sensor.
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You are right, it happens all the time, when I move the phone away in a call, the screen doesnt light-up, I had to press the power button, until I found that whiping that sensor lights it most of the time, must have very little sensitivity
melorib said:
You are right, it happens all the time, when I move the phone away in a call, the screen doesnt light-up, I had to press the power button, until I found that whiping that sensor lights it most of the time, must have very little sensitivity
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for sure its the sensor...my second screen have a delay maybe 4/5 seconds when put in sunlight to be more bright and its clean! but this second screen in V10 arent too bright like in V20.
Also my call screen doesnt show up too when i need to end a call, i need to click on power button to wake the screen but i get used to it now.

S9+ screen flickering issue

I have this weird issue that my phone's display goes yellow and flickers a lot when I open it using power button or hard press home button but if always on display is set to ON the display turns on normally without any issue howsoever I open it either by the home button or any other way
and even after the call as the proximity sensor turns the display black the problem starts again as soon as the call ends, so please someone could help me is it a software issue or hardware? I'm on latest stable android one.
I have the same issue, technicians have advice me to change the screen
Varun Vijaywargi said:
I have this weird issue that my phone's display goes yellow and flickers a lot when I open it using power button or hard press home button but if always on display is set to ON the display turns on normally without any issue howsoever I open it either by the home button or any other way
and even after the call as the proximity sensor turns the display black the problem starts again as soon as the call ends, so please someone could help me is it a software issue or hardware? I'm on latest stable android one.
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Did you figure out a solution for the problem??
I seem to have the same issue now.
real_dzeko said:
Did you figure out a solution for the problem??
I seem to have the same issue now.
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I have to change the screen.
badaru1 said:
I have the same issue, technicians have advice me to change the screen
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Did he mention the cause for it?
real_dzeko said:
Did you figure out a solution for the problem??
I seem to have the same issue now.
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Yes a temporary solution is to turn on AOD and then single tap the screen, after that press the power button to avoid the yellow flicker or complete black screen.

Fingerprint sensor

Hi guys,
when I try to unlock my device by fingerprint, when it is on lock screen, all the screen increase luminosity with a green light sometimes.
I don't remember if it's normal, because some days ago I got my display replaced... I also watched some videos and I didn't notice the increase in luminosity when they try to unlock the device in the lock screen.
BalmungFezalion said:
Hi guys,
when I try to unlock my device by fingerprint, when it is on lock screen, all the screen increase luminosity with a green light sometimes.
I don't remember if it's normal, because some days ago I got my display replaced... I also watched some videos and I didn't notice the increase in luminosity when they try to unlock the device in the lock screen.
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Happens to me occasionally too,I think it's a glitch in the matrix lol,if you knock the screen off and try again it works fine.
cnutt1 said:
Happens to me occasionally too,I think it's a glitch in the matrix lol,if you knock the screen off and try again it works fine.
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It always happens to me :crying:
I think i should replace it again
This is normal after the latest update
I noticed much faster finger print also

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