Database Develop

[Q] Weird sound given off by Vibrator thru Speaker

Hello All,
My Z1 has recently begun to give off a sort of feedback when it vibrates (via the speakers).
I've ran diagnostic tests on my phone and all tests seem to come back positive and error-free.
However, when I run the Vibration test, sometimes the vibrator works perfectly fine (for about two runs), and then it vibrates with the negative "ZzzzzZzzZ" sound.
Is anyone else experiencing this issue with their Z1? Perhaps someone else (if anyone is experiencing it as well) can further elaborate on the issue. Would really like to get this issue fixed without having to send it back to Sony :crying:

I have the same problem with my Z1 (6903). There's a weird buzzing sound from the speaker right after the vibrator activate. Would love to be able to fix this without sending to Sony as well.

Jounsa said:
Hello All,
My Z1 has recently begun to give off a sort of feedback when it vibrates (via the speakers).
I've ran diagnostic tests on my phone and all tests seem to come back positive and error-free.
However, when I run the Vibration test, sometimes the vibrator works perfectly fine (for about two runs), and then it vibrates with the negative "ZzzzzZzzZ" sound.
Is anyone else experiencing this issue with their Z1? Perhaps someone else (if anyone is experiencing it as well) can further elaborate on the issue. Would really like to get this issue fixed without having to send it back to Sony :crying:
Click to expand...
Click to collapse
luan87us said:
I have the same problem with my Z1 (6903). There's a weird buzzing sound from the speaker right after the vibrator activate. Would love to be able to fix this without sending to Sony as well.
Click to expand...
Click to collapse
Guys i had same problem few weeks back, then two days back vibrator stopped working and this zzzzzzzzzzzz sound was the only thing i can notice. So went to center and today got it replaced. So no more workarounds for this issue. Go to center and get it replaced.

Peaceful Droid said:
Guys i had same problem few weeks back, then two days back vibrator stopped working and this zzzzzzzzzzzz sound was the only thing i can notice. So went to center and today got it replaced. So no more workarounds for this issue. Go to center and get it replaced.
Click to expand...
Click to collapse
Ahh, that's unfortunate. I live in the Bahamas, so doing that is pretty difficult for me at the moment. Were you able to go to any Sony store, or did you have to go directly to a service center? How long did you have to wait for your replacement?
Sent from my C6903 using Tapatalk

I submitted my phone yesterday morning and person in charge told me they will try to do any sort of update first and if still there is an issue, they will replace it. Today morning when i went there, he told issue is not sorted wait for 10 minutes. and then i got new brand replacement in 15-20 minutes..:laugh:
I will suggest you to go directly to service center.

Peaceful Droid said:
I submitted my phone yesterday morning and person in charge told me they will try to do any sort of update first and if still there is an issue, they will replace it. Today morning when i went there, he told issue is not sorted wait for 10 minutes. and then i got new brand replacement in 15-20 minutes..:laugh:
I will suggest you to go directly to service center.
Click to expand...
Click to collapse
Damn. Lol that is a toughie. Only service center I know of in the US is located in Texas :/
Edit: There are actually 4 locations; NJ, LA, Texas and San Jose, Cali.
Sent from my C6903 using Tapatalk

Ohhh that sounds tooooo far from your location. Try repair your phone via SUS or PCC. But first take full backup. Hope this can solve your issue. Though chances are very less.

Peaceful Droid said:
Ohhh that sounds tooooo far from your location. Try repair your phone via SUS or PCC. But first take full backup. Hope this can solve your issue. Though chances are very less.
Click to expand...
Click to collapse
Yeahh, I doubt it would fix my prob. I'm going to have to tough it out till I can get up to NJ at some point (hopefully before my warranty expires ).

Yeah All the best for that mate.
Really found my self lucky that i have to travel just 10-12 minutes to reach service center

Yeah, thanks for replying to my thread though..thought I was the only one experiencing this issue.

smajor said:
No, You are not one! I faced this issue. Somehow I can't help with it, this seems its phone fault. Z1 has many issues in it.
Click to expand...
Click to collapse
Yeah, unfortunately. Considering this is such an expensive phone with "top-quality components", you'd have expected more..

I'm also having the squeaky vibration problem...
Hi, I'm also having the squeaky vibration problem. My phone is about 6 months old and I've been having this noisy vibration squeak for at lease 6 weeks now. I'm running slimkit evo 8.1 on a unlocked bootloader. Before I try to get it fixed by Sony, do I need to reset back to stock and lock my bootloader?
Could anyone give me some pointer to what I could say to get the phone exchanged for a brand new one? I can't be without a phone for 2-3 weeks (estimated service time by resale store).

I have a 5 months old z1, and ive had this issue since the first month i bought it....i guess its a weak point, which is pity for a flag**** phone...

macooz said:
Hi, I'm also having the squeaky vibration problem. My phone is about 6 months old and I've been having this noisy vibration squeak for at lease 6 weeks now. I'm running slimkit evo 8.1 on a unlocked bootloader. Before I try to get it fixed by Sony, do I need to reset back to stock and lock my bootloader?
Could anyone give me some pointer to what I could say to get the phone exchanged for a brand new one? I can't be without a phone for 2-3 weeks (estimated service time by resale store).
Click to expand...
Click to collapse
Hi macooz,
Sorry for the late reply. If you are sending it back to Sony, you should always revert back to Stock, as custom firmwares void your warranty.
You could simply tell them that your Vibration Motor is not functioning properly (giving off a squeaky noise instead of an actual vibration) and you would like for it to be either repaired / replaced or have your entire phone exchanged for a new one.
Sent from my C6903 using Tapatalk

VladoBENZ said:
I have a 5 months old z1, and ive had this issue since the first month i bought it....i guess its a weak point, which is pity for a flag**** phone...
Click to expand...
Click to collapse
I agree with you. Issue is that because the phone is encased in gorilla glass, it makes it a bit difficult to change any parts on your own. Disassembly videos are available on YouTube, but who wants to take the risk of breaking their phone's casing and then have to replace additional parts?
Sent from my C6903 using Tapatalk

Same Problem
OMG, I have the same problem. Are there is way besides bring it to sony. In my country Indonesian, Sony Center is so bad service, that will long mont for service :crying:

Aghry said:
OMG, I have the same problem. Are there is way besides bring it to sony. In my country Indonesian, Sony Center is so bad service, that will long mont for service :crying:
Click to expand...
Click to collapse
Hi,
No work around , besides trying to do it yourself and losing your warranty.
Was without my phone for a month and a half. Eventually got it replaced.

@soka said:
Hi,
No work around , besides trying to do it yourself and losing your warranty.
Was without my phone for a month and a half. Eventually got it replaced.
Click to expand...
Click to collapse
Unfortunately, I agree with Soka on this one. I have had the replacement Vibrator for months now, but a little reluctant to open my device as it requires heating and having to purchase new adhesives and so on. I am getting those items in the very near future though, so I'm going to go ahead and do it!
My best piece of advice would be to purchase a replacement back (in case you crack / break your original one while removing it) and replacement adhesives before actually performing the DIY Fix.

Hi there Im facing this problem too, I open a new thread but then @soka pointed me to this one, I record a video from the sound
they had already replace the vibrator and the main board, but the issue still continue, here is the thread I open:
http://forum.xda-developers.com/xperia-z1/help/problem-sound-vibrator-t2922957
Hope to get fixed or replaced soon

Well, finally fixed my vibrator problem. I opened the back of my phone using a Hot Air Gun and pry tools, then replaced the vibrator module. Unfortunately, this seems to be the only valid solution.
Sent from my Xperia Z1 using Tapatalk

Question regarding screen

Hello XDA!
My note 5's screen stopped functioning after it was dropped. I sent it to an authorised Samsung service centre.
Everything is fine, only that I'm observing a pink tint (usually over white) on the screen, when compared to another note 5. Is this normal? Should I raise a complaint regarding the same, or is there a workaround?

Bump!

Come on :/ someone?

No, it's not normal, and I'm fairly sure you realize that. You should see if they will "fix" it again (obviously they didn't fix it right the 1st time)
The pink tint is an older issue with many devices, haven't seen much about it with the Note 5, but it is certainly a defect in my book.

ingenious247 said:
No, it's not normal, and I'm fairly sure you realize that. You should see if they will "fix" it again (obviously they didn't fix it right the 1st time)
The pink tint is an older issue with many devices, haven't seen much about it with the Note 5, but it is certainly a defect in my book.
Click to expand...
Click to collapse
What was the issue?

Vivek_Vivek said:
What was the issue?
Click to expand...
Click to collapse
Faulty display. No root cause identified, just a bad panel.
Read rumors it could be the adhesive not curing properly.

I had that issue on like 5 samsung s6s. I kept returning then till i got an acceptable one. Still never got a perfect one.
I just got the note5 last week and the screen is perfect.
Ide send it back.
Sent from my SM-N920T using Tapatalk

guys can anyone help ?
i dropped my note 5 and the display got cracked, gave the phone to the service center and they replaced the screen but the touch isn't working.
Everything is getting displayed but the touch isnt working. He told me that he replaced the screen twice but still the touch was not working, can anyone tell me what might be the issue?

Anshul Rajput said:
guys can anyone help ?
i dropped my note 5 and the display got cracked, gave the phone to the service center and they replaced the screen but the touch isn't working.
Everything is getting displayed but the touch isnt working. He told me that he replaced the screen twice but still the touch was not working, can anyone tell me what might be the issue?
Click to expand...
Click to collapse
How much did they charge you? And was it an authorised Samsung service centre?

Vivek_Vivek said:
How much did they charge you? And was it an authorised Samsung service centre?
Click to expand...
Click to collapse
yes authorised service center, 9.5k for the display.
But still touch is not working

K20 Pro touch screen digitizer hyper-sensitive

I moved to the K20 Pro from my old workhorse OnePlus 3T. I have received the phone with a defective digitizer. It is extremely sensitive, and many times taps are registered as swipes. Many times touches are innaccurate. I bought it in India from a site called Flipkart, and they have refused replacement, so I am stuck with it.
I bought this phone instead of OnePlus 7 because it had a headphone jack. But this phone has been a real heartbreak for me. I cannot take the phone to a service center because I cannot prove the problem. This is something you notice only by using for a long time.
I hope a future software update would fix this issue to some extent. I am never buying a Xiaomi again.
If you guys have any suggestions or solutions, please let me know.

Why did Flipkart refuse a return?, That's not acceptable, you need to bang their doors or go to a nearby xioami centre
Sent from my Redmi K20 Pro using Tapatalk

GauharJK said:
I moved to the K20 Pro from my old workhorse OnePlus 3T. I have received the phone with a defective digitizer. It is extremely sensitive, and many times taps are registered as swipes. Many times touches are innaccurate. I bought it in India from a site called Flipkart, and they have refused replacement, so I am stuck with it.
I bought this phone instead of OnePlus 7 because it had a headphone jack. But this phone has been a real heartbreak for me. I cannot take the phone to a service center because I cannot prove the problem. This is something you notice only by using for a long time.
I hope a future software update would fix this issue to some extent. I am never buying a Xiaomi again.
If you guys have any suggestions or solutions, please let me know.
Click to expand...
Click to collapse
even you bought a oneplus 7 with this defect , i doubt they will change it as well , what third party app you used btw ?

Aimara said:
even you bought a oneplus 7 with this defect , i doubt they will change it as well , what third party app you used btw ?
Click to expand...
Click to collapse
No third party app. To verify touch screen problem, went to builtin CIT by tapping on Kernel Info in the about screen. Then, to Additional Tools >> Touch sensor. Randomly, taps show up as lines.
Browsing websites or reddit is a pain, as taps become swipes randomly. It does not happen consistently, but often enough that it is a big pain.

GauharJK said:
No third party app. To verify touch screen problem, went to builtin CIT by tapping on Kernel Info in the about screen. Then, to Additional Tools >> Touch sensor. Randomly, taps show up as lines.
Browsing websites or reddit is a pain, as taps become swipes randomly. It does not happen consistently, but often enough that it is a big pain.
Click to expand...
Click to collapse
i know about cit as well , if its the built in app for techs then its legit proof, think you should bring it down to service center to claim warranty ? unless its a china set ?

Aimara said:
i know about cit as well , if its the built in app for techs then its legit proof, think you should bring it down to service center to claim warranty ? unless its a china set ?
Click to expand...
Click to collapse
It is an India unit under warranty. But I am afraid I won't be able to demonstrate the problem. It is not visible easily unless you use the phone for a long time. It is not reproducible.

GauharJK said:
It is an India unit under warranty. But I am afraid I won't be able to demonstrate the problem. It is not visible easily unless you use the phone for a long time. It is not reproducible.
Click to expand...
Click to collapse
Maybe when unit heats up? Try a couple of pubg gaming . Then test.

Situation update:
I went to About Phone >> System Update, then on "Download latest package". Reinstalled the firmware. The touchscreen problem has been reduced considerably.

your Touch is Fine now??

PHnambawan said:
your Touch is Fine now??
Click to expand...
Click to collapse
It's still bad. Better than before. But not satisfactory.

Lol, all are so noobs in here. Just change your goddam cover. I had the same problem, its due to multitouch issue arising with thin bezels and amoled screen. My problem is completely solved now, even in the factory test. Good luck.

sahilb8994 said:
Lol, all are so noobs in here. Just change your goddam cover. I had the same problem, its due to multitouch issue arising with thin bezels and amoled screen. My problem is completely solved now, even in the factory test. Good luck.
Click to expand...
Click to collapse
Lol, we have an arrogant expert who somehow knows the guy with a display problem has a heavy rugged cover in use.
Sent from my Redmi K20 Pro using Tapatalk

ishaqtkr said:
Lol, we have an arrogant expert who somehow knows the guy with a display problem has a heavy rugged cover in use.
Sent from my Redmi K20 Pro using Tapatalk
Click to expand...
Click to collapse
Just was being silly, I had the same problem, got solved, and I have been through the same thing so I can relate.
Btw am still facing the 27W fiasco and screen protector problems. Any leads there?

I have to use apps like Touchscreen Calibration from the play store to make the phone usable. Don't know how this app works, but accuracy improves temporarily.
My next phone will be a OnePlus. I am not coming back to Xiaomi again. MIUI is garbage.

sahilb8994 said:
Just was being silly, I had the same problem, got solved, and I have been through the same thing so I can relate.
Btw am still facing the 27W fiasco and screen protector problems. Any leads there?
Click to expand...
Click to collapse
My problem is not just the edges. Its that taps are registered as swipes. You click on a Reddit upvote, the screen just scrolls. You click on a youtube link, the screen scrolls instead of clicking. But it is very random, happens once in a while.
What is your screen protector issue? Fingerprint sensor doesn't work with a screen protector? I had that problem too, had to throw away a new screen protector on day one. But maybe a better quality screen protector would solve the problem. Not tested yet.

GauharJK said:
My problem is not just the edges. Its that taps are registered as swipes. You click on a Reddit upvote, the screen just scrolls. You click on a youtube link, the screen scrolls instead of clicking. But it is very random, happens once in a while.
What is your screen protector issue? Fingerprint sensor doesn't work with a screen protector? I had that problem too, had to throw away a new screen protector on day one. But maybe a better quality screen protector would solve the problem. Not tested yet.
Click to expand...
Click to collapse
That sometimes I touch the side and screen at same time due to screen to body ratio and it registers a swipe. I had to change my unconscious habits of holding the phone

Mine touch senstivity is fine but sometimes the swipes don't get registered properly. Can anyone help me with it?

I am late but if others are looking for answer then Pixel Experience is the answer. It solved all my senstivity issues and my swipes are getting registered correctly. Thanks to the one who suggested me to switch to PE

[QUOareTE="aliasraii, post: 83939863, member: 11241619"]
I am t ib others are looking for answer then Pixel Experience is the answer. It solved all my senstivity issues and my swipes are getting registered correctly. Thanks to the one who suggested me to switch to PE
[/QUOTE]
Mine problem is same when I play pubg the touch stops working again and again during the game
And touches are automatically registered

Yellow Screen Galaxy Note 9

Hi, after the March update, I found my Galaxy Note 9 screen turned yellow..
I turned off the screen, unlocked the screen and the screen back to normal..but the yellow screen will reappear...
Some people say it's a hardware problem and replace their LCD, but some people assume that Samsung technicians don't want to get dizzy and just say "you have to replace the LCD"
There is someone who brought this to the Samsung center, the technician just looked without checking further and said "the LCD has been broken" and he fixed it via safe mode (IDK the detail)
And some people solve this problem with FW flash via Odin..
I'm curious, do custom ROM users experience yellow screen too? is this really a hardware problem?
Thanks, and sorry for bad English

madthinker said:
Hi, after the March update, I found my Galaxy Note 9 screen turned yellow..
I turned off the screen, unlocked the screen and the screen back to normal..but the yellow screen will reappear...
Some people say it's a hardware problem and replace their LCD, but some people assume that Samsung technicians don't want to get dizzy and just say "you have to replace the LCD"
There is someone who brought this to the Samsung center, the technician just looked without checking further and said "the LCD has been broken" and he fixed it via safe mode (IDK the detail)
And some people solve this problem with FW flash via Odin..
I'm curious, do custom ROM users experience yellow screen too? is this really a hardware problem?
Thanks, and sorry for bad English
Click to expand...
Click to collapse
Already discussed but i don't know the details.
https://forum.xda-developers.com/galaxy-note-9/help/samsung-note-9-display-discoloration-t4083389
Using custom rom no issue with mar update but now using may base.

Rosli59564 said:
Already discussed but i don't know the details.
https://forum.xda-developers.com/galaxy-note-9/help/samsung-note-9-display-discoloration-t4083389
Using custom rom no issue with mar update but now using may base.
Click to expand...
Click to collapse
have we made a petition?
Because it's not only Galaxy Note 9, but also Note 8, S7, S9..
Do all Samsung flagship problems with hardware?
But my friend's Galaxy Note FE and Note 8 with OneUI ver 1 is fine

madthinker said:
have we made a petition?
Because it's not only Galaxy Note 9, but also Note 8, S7, S9..
Do all Samsung flagship problems with hardware?
But my friend's Galaxy Note FE and Note 8 with OneUI ver 1 is fine
Click to expand...
Click to collapse
Those affected should. Samsung is greedy to force for hardware replacement instead of fixing their software. Samsung hardwares are expensive. In my country screen replacement for note 9 is about half of the second hand value of this phone.

Have you tried wiping the Cache Partition in Recovery Mode?

Rosli59564 said:
Those affected should. Samsung is greedy to force for hardware replacement instead of fixing their software. Samsung hardwares are expensive. In my country screen replacement for note 9 is about half of the second hand value of this phone.
Click to expand...
Click to collapse
Yeah, and my device has no warranty at this time
iceepyon said:
Have you tried wiping the Cache Partition in Recovery Mode?
Click to expand...
Click to collapse
Not yet, because I have read someone who did it but it still has no effect.

Note 9 yellowish scree
hi I've faced the yellowish screen problem recently. My phone is 1 year and 7 months old. I visited samsung service center in my city in India. 1st they told me it was your fault that because of your mishandling this has happened and some brainless person told me to go for replacement which cost around 21000 rs(300$) in India. But then i asked them to find any dent, crack or even a scratch on body or glass if its mishandling. Then i showed them this article. https://www.sammobile.com/news/galaxy-note-9-march-2020-security-update-broken-screen/
Manager head technician accepted the fact that this wasn't my fault any kept phone with him. After 20-25 days now i have my phone with screen replaced without giving a single penny. Samsung is such greedy company that pushes such faulty updates and loot consumers like they haven't looted us enough with such heavy priced phones.

gunjanadhvaryu said:
hi I've faced the yellowish screen problem recently. My phone is 1 year and 7 months old. I visited samsung service center in my city in India. 1st they told me it was your fault that because of your mishandling this has happened and some brainless person told me to go for replacement which cost around 21000 rs(300$) in India. But then i asked them to find any dent, crack or even a scratch on body or glass if its mishandling. Then i showed them this article. https://www.sammobile.com/news/galaxy-note-9-march-2020-security-update-broken-screen/
Manager head technician accepted the fact that this wasn't my fault any kept phone with him. After 20-25 days now i have my phone with screen replaced without giving a single penny. Samsung is such greedy company that pushes such faulty updates and loot consumers like they haven't looted us enough with such heavy priced phones.
Click to expand...
Click to collapse
Which city ?.
Because in Bangalore they kept for my phone for a week and returned it without doing anything.
Same issue not a single scratch, dent or bump. Mint phone. But Audio Dead.
They told me to my face and in writing that no Note 9 users have reported any problems after the update.
I told them to visit XDA and their own company community pages but they ignored me.
They demanded that the only way they would help is if I paid 26500 to replace the board. ANd even that would take weeks. Due to present situation.
Another guy in another city was quoted 18K for his Note 9 main board. So it seems they can charge what they want.
There is no fixed rate. They cant even match the rates on their own web site.
Lets just say you got very lucky or you have good contacts.

RonChinoy said:
Which city ?.
Because in Bangalore they kept for my phone for a week and returned it without doing anything.
Same issue not a single scratch, dent or bump. Mint phone. But Audio Dead.
They told me to my face and in writing that no Note 9 users have reported any problems after the update.
I told them to visit XDA and their own company community pages but they ignored me.
They demanded that the only way they would help is if I paid 26500 to replace the board. ANd even that would take weeks. Due to present situation.
Another guy in another city was quoted 18K for his Note 9 main board. So it seems they can charge what they want.
There is no fixed rate. They cant even match the rates on their own web site.
Lets just say you got very lucky or you have good contacts.
Click to expand...
Click to collapse
I am in Surat. I didn't have any contacts in Samsung service center. I went there and requested to look upon my problem. 1st the illiterate girl at the desk ignored me but when the manager/chief engineer came to know about the problem he peacefully heard me. I used my "Being A Doctor trump card" to further make him believe that i was no joking and lying. And ultimately I was lucky. Though i was very much prepared to go in consumer court if that failed.

They just returned my phone and told me to come back when I was willing to pay 26500 for a new board.
I have started a new Face Book Page Called Samsung India worst company.
Come join it

Hi bro .
I seen some clue regards this issues .
If we play hdr video . Screen turn normal like before
So I think some issues in hdr setting in March update
Try this hdr video u can see real screen comes

jagdishchennai said:
Hi bro .
I seen some clue regards this issues .
If we play hdr video . Screen turn normal like before
So I think some issues in hdr setting in March update
Try this hdr video u can see real screen comes
Click to expand...
Click to collapse
did not work! can you give more information !?

Looks weird but its working for me, tap to switch on always on display then open the phone with fingerprint or other methods, screen becomes normal !!

So I opted to fix my own phone.
WHat I found was that the over heating had cause some microscopic balls of lead to have melted during the over heating and these were all over the main board. I suspect some got under the Amplifer 98512 IC. So I purchased the part form china for 2$. Purchased a microscope and fix it myself.
I also cleaned the main board in ultrasonic machine to make sure all the small balls were dislodged. Its been over a week and my phone is working fine.
I suspect if you try all the software options and nothing works. Open the back cover and look for these tiny balls. If you see them clean the board and put it back it may start working. If it has shorted something off course you will see the damage. May times just a clean and re-seating the flex cable solves the problem.
I wonder if Samsung return your old board if they charge you for a new one.

Hey, download this app PWMfree by going to this link https://forum.xda-developers.com/showpost.php?p=78953726&postcount=48 this will resolve your problem. Once downloaded scroll down then allow access, that's it. I hope this help.

Hi , i also have a screen problem with my Galaxy Note 9 Edge but i don't know if it is the same as the above problems. The problem started when i turned on the "always display on" option and set the clock to orange. I don't know if this is a coincidence but as soon as i turned that option 2/3s of my screen turned to orange as seen on the attached picture. I tried reverting the options but with no luck. Anyone have any idea what's going on? Did i messed some some settings? I have the latest update installed.

Finally yellow screen fixed in 13 July 2021 update

From what I have heard if you use the gesture navigations instead of the on-screen button navigation method. You should not experience the green screen issue.

madthinker said:
Hi, after the March update, I found my Galaxy Note 9 screen turned yellow..
I turned off the screen, unlocked the screen and the screen back to normal..but the yellow screen will reappear...
Some people say it's a hardware problem and replace their LCD, but some people assume that Samsung technicians don't want to get dizzy and just say "you have to replace the LCD"
There is someone who brought this to the Samsung center, the technician just looked without checking further and said "the LCD has been broken" and he fixed it via safe mode (IDK the detail)
And some people solve this problem with FW flash via Odin..
I'm curious, do custom ROM users experience yellow screen too? is this really a hardware problem?
Thanks, and sorry for bad English
Click to expand...
Click to collapse
If it's an LCD display they don't just turn yellow.
Flash it back to the firmware it was running on.
Rule #1 if the phone is running fast and stable, leave it be.

k20 Pro black screen Problem

Hey, I got this black screen issue with my K20 pro. And clearly its not software issue.
I tried many things, Searched many sites.
All k20 pro user whether are on miui 10 or 11 or 12 experiencing this problem.
my worst luck is i m still under warrenty but i got a little crack on my phone within 10 days of purchase, it has been 10 month since than. my phone was working fine and suddenly i am experiencing this issue. my phone is completely blank now. Service center not taking it under warrenty since it broke.

ketan.Patel said:
Hey, I got this black screen issue with my K20 pro. And clearly its not software issue.
I tried many things, Searched many sites.
All k20 pro user whether are on miui 10 or 11 or 12 experiencing this problem.
my worst luck is i m still under warrenty but i got a little crack on my phone within 10 days of purchase, it has been 10 month since than. my phone was working fine and suddenly i am experiencing this issue. my phone is completely blank now. Service center not taking it under warrenty since it broke.
anyone know the actual issue, call or whatsapp me please on 8005808844 and let me know how to fix it
Click to expand...
Click to collapse
Actually I faced the same issue with my K20 pro. Nothing worked for me , power button didn't respond and I took it to service center, surprisingly there it turned on without giving to them, Even though It's working fine now, I gave them to check for the black screen issue, and they replied they didn't find any log for that and even they answered the last used app on my device. From that I concluded it's a software issue.
Again till now, I didn't face that issue. If I'm wrong please correct me.

Kotesh koti said:
Actually I faced the same issue with my K20 pro. Nothing worked for me , power button didn't respond and I took it to service center, surprisingly there it turned on without giving to them, Even though It's working fine now, I gave them to check for the black screen issue, and they replied they didn't find any log for that and even they answered the last used app on my device. From that I concluded it's a software issue.
Again till now, I didn't face that issue. If I'm wrong please correct me.
Click to expand...
Click to collapse
There might be many possibilities, but did they repaired it somehow, or just checked and gave back to you.
If it's given back to you without doing any repair of any kind. Please be very cautious, this devices will go black eventually. Please make a action as soon as possible before same happened again.
You can search and read other users review as well. This phone manufacturing must have a serious manufacturing defect that all users will experience some day

ketan.Patel said:
There might be many possibilities, but did they repaired it somehow, or just checked and gave back to you.
If it's given back to you without doing any repair of any kind. Please be very cautious, this devices will go black eventually. Please make a action as soon as possible before same happened again.
You can search and read other users review as well. This phone manufacturing must have a serious manufacturing defect that all users will experience some day
Click to expand...
Click to collapse
The returned me without repairing.
Even I was scared and later came to know that it was a software issue. I noticed black screen issue in July and till now I didn't faced that again.

Kotesh koti said:
The returned me without repairing.
Even I was scared and later came to know that it was a software issue. I noticed black screen issue in July and till now I didn't faced that again.
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Click to collapse
That's great, Could you please let me know how that software issue got solved.
Currently my phone's screen is black. I can't use it.
I do know its working fine by the sound of charging plug in and out and calls coming.
I m frustrated and going for a IPS LCD display worth 3500 rs since amoled will cost around 9000
This is my last try to solve it if I can.
So please share your experience how it was solved

ketan.Patel said:
That's great, Could you please let me know how that software issue got solved.
Currently my phone's screen is black. I can't use it.
I do know its working fine by the sound of charging plug in and out and calls coming.
I m frustrated and going for a IPS LCD display worth 3500 rs since amoled will cost around 9000
This is my last try to solve it if I can.
So please share your experience how it was solved
Click to expand...
Click to collapse
Frankly I did nothing.
It worked fine itself. I got scared to switch to custom roms coz I thought it as a hardware issue, later came to know as a software issue. I heard that some people had fod issues with miui 12 after screen replacement. I can't guide you in this case and please do proper research before spending money.
Thanks

Kotesh koti said:
Frankly I did nothing.
It worked fine itself. I got scared to switch to custom roms coz I thought it as a hardware issue, later came to know as a software issue. I heard that some people had fod issues with miui 12 after screen replacement. I can't guide you in this case and please do proper research before spending money.
Thanks
Click to expand...
Click to collapse
Fod issue? Can you please explain ?

ketan.Patel said:
Fod issue? Can you please explain ?
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Click to collapse
I can't confirm this as I didn't face that. I read this on XDA. I'll pin the threat if I find that.
PS: https://forum.xda-developers.com/k20-pro/help/fingerprint-dont-replace-display-t4158097

Kotesh koti said:
I can't confirm this as I didn't face that. I read this on XDA. I'll pin the threat if I find that.
PS: https://forum.xda-developers.com/k20-pro/help/fingerprint-dont-replace-display-t4158097
Click to expand...
Click to collapse
Ohh ok got it.
You are talking about fingerprint will not work on IPS LCD display, yes that I do know.
But what options do I have?
It's either 3500 with no fingerprint or 9000 with fingerprint.
I can use other ways to unlock so it's kind of fine with me