Mi 9t pro pop up camera failed to work/calibrate - Redmi K20 / Xiaomi Mi 9T Questions & Answers

Hi, have searched in the forum for all possible solution but non worked, the camera just failed to pop up.
The problem occurs once i leave my phone idle for awhile and required a few tries/restart to pop the camera back up.
Anyway i've lodged a warranty claim at a local service centre in Malaysia and they've told me that i am not the only one facing this issue and it was likely caused by the hardware than the software.
Was really disappointed especially it was my first try Xiaomi's product.
Model that i am having is MI 9T Global variant.

Sometimes i face the dame issue... I take care to Open the camera 2-3 times a day cuz that

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[Q] Galaxy S4 Sensor issues

Hi All,
I've been experiencing some sensor issues lately on my Samsung Galaxy S4 I9505. The issue is basically, that they don't work. After running tests and ensuring that it's not me being stupid, I sent it back for repair under warranty into Phones4u, (DO NOT ever do that if you take my advice) saying it's a hardware issue. That was in august (precisely on the 30st).
The first time the phone came back to me in september (25th) saying it had been repaired. And guess what, it had not. Same issues. (I'll skip the part where I complained over phone and emailed them and basically they ignored / didn't get back to me, or refused to give me a replacement phone saying I'm not with the ripoff insurance company they had offered) Cheers for that!
So I sent it back for a second round with an A4 sheet describing the issue in details.
After waiting almost a month - again - I got my phone back (yesterday.. Oct 19th) with the engineer's comments: "Couldn't find the problem."
Great!
BUT! Surprisingly, all sensors worked! wow!
But my joy didn't last long, as after a few hours the test Failed again. I restarted the phone and it turned out that restarting the phone helps SOMETIMES temporarily, and that's only confusing because I would've thought that I'm facing a hardware issue. But if they SOMETIMES work it must be a software issue.
So I went ahead and downloaded the latest OFFICIAL firmware (XXEUEMI8) with 4.3 android. With this I'm not voiding the warranty and keep the binary counter on 0 just in case it has to go back again. (Oh yes, the phone hasn't been rooted. )
But no, didn't work. Still the same issues.
In the video here you see my latest factory reset and sensor tests.
Any ideas? Suggestions? Maybe someone with similar issues?

Xiaomi Redmi 3S ordered from Top One not working

Hello!
I ordered my Xiaomi Redmi 3S via Top One Store and it stopped working after 3 days. It says there is no signal. I tried inserting different SIM cards and it doesn't work with any of them. I tried my SIM with other phones and it works with ALL of them except for Redmi 3S. I wrote to the seller and they weren't responding very quickly. So, I opened a dispute (on Aliexpress) and they wanted me to upload the video showing that I insert SIM card in Redmi 3S and there is no signal and how I insert SIM in another phone (Samsung) and it works. I did just that and there were only 2 bars of signal on Samsung, so they wrote that of course it doesn't work on Redmi if there is weak signal on Samsung. So I had to upload another video with 100% signal on Samsung phone. I shot a video they required but I couldn't upload the video because Aliexpress website had problems. I reported about being unable to upload the video to customer service twice and they guaranteed they will fix the problem (I also have screenshots of them promising me they will fix the problem). My time for uploading the evidence was up because they didn't fix the problem, so my money was released to the seller. I wrote an appeal but it was declined. Now, Top One is not responding, I contacted them several times and there is no reply. I tried everything, flashing the phone, uploading different types of ROM (global, developer's, user's), I also unlocked the boot loader lock. Nothing works. The thing is that there shouldn't be a problem with the carrier because my sister has the same phone and the same carrier and her phone works perfectly. There is a problem with my phone in particular.
I also contacted several other Xiaomi sellers and they only fix their own phones. I contacted official Xiaomi HK Maintenance Service and they figured out that my phone is not a genuine HK version, so they can't fix it because they only fix genuine versions.
Do you have any ideas what I should do? Because Top One is not responding, I can't leave them feedback about the product because so much time has passed while I was writing to different sellers and trying different settings.
Do you know where they repair Xiaomi phones?
I would appreciate any help suggestions and ideas.
Thanks in advance.
Best regards

Camera error. Claim warranty on a device with unlocked bootloader.

My camera app(moto camera) has stopped working, it says: camera error, please restart camera(log attached).
I can still access my camera through google camera and other apps.
I checked about this error on Lenovo forums, Lenovo had to replace people's phone.
Im using BeanStalk 7.1 custom ROM with unlocked bootloader, is there any way I can claim my warranty to get a replacement and shove it in Lenovo's face.
Why even shove it in Lenovo's face? Okay, since your bootloader is unlocked and your warranty is void, all you can do now is buy another Moto G4 Plus. Can't claim back your warranty anymore. Sorry.
thebeonkid said:
My camera app(moto camera) has stopped working, it says: camera error, please restart camera(log attached).
I can still access my camera through google camera and other apps.
I checked about this error on Lenovo forums, Lenovo had to replace people's phone.
Im using BeanStalk 7.1 custom ROM with unlocked bootloader, is there any way I can claim my warranty to get a replacement and shove it in Lenovo's face.
Click to expand...
Click to collapse
i have 2 scenarios about this problem...
1-- On my another phone (not g4+),
Had same problem long ago: it usually shown something: "Camera error: couldn't connect to camera"
And it got fixed later on latest build...
You can now try first clear data/cache and give all permissions to camera... And then go for different ROM..
2-- this is about my brother's phone issue, this problem happened when phone fall down from height and camera hardware got damaged... Not 100% sure about this...
thebeonkid said:
My camera app(moto camera) has stopped working, it says: camera error, please restart camera(log attached).
I can still access my camera through google camera and other apps.
I checked about this error on Lenovo forums, Lenovo had to replace people's phone.
Im using BeanStalk 7.1 custom ROM with unlocked bootloader, is there any way I can claim my warranty to get a replacement and shove it in Lenovo's face.
Click to expand...
Click to collapse
I had the same issue when my mobile fell in water the camera would force close and finger print scanner option was also gone I didn't know what to do i just left it like that for some time and the issues was solved automatically funny I don't know how.
In EU is illegal to deny hardware warranty for software issues like unlocking the bootloader.
Unlocking is a feature advertised by manufacturer for the device, boost their sales and the code is provided by them, is not hacked illegally.
In US they (Moto) didn't get challenged in court yet but I bet they would lose.
Now, if the phone has fall or water damage (there are sensors inside that can prove that) then obviously they are off the hook for warranty.
thebeonkid said:
My camera app(moto camera) has stopped working, it says: camera error, please restart camera(log attached).
I can still access my camera through google camera and other apps.
I checked about this error on Lenovo forums, Lenovo had to replace people's phone.
Im using BeanStalk 7.1 custom ROM with unlocked bootloader, is there any way I can claim my warranty to get a replacement and shove it in Lenovo's face.
Click to expand...
Click to collapse
Its depend on your luck and the service center, if the people in service center are dumb they will not check whether bootloader is unlock or not.
Same thing happen to me when i got screen burn ,my phone was unlocked and rooted. I was confused whether I can claim warranty or not.So i re-lock my boot-loader by this method http://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1643-updated-signed-t3460695 then I went to service center ,funny thing is that I have to explain what is screen burn to them , then they said they will replace the display then I got my phone back in 40 days,
So i will recommend you to relock your bootloader and go to service center.
I was able to get my battery replaced under warranty after unlocking my bootloader for free. All I did was reload stock firmware and recovery using fastboot. Did the online repair and sent it out. Pestered them online on chat like every day after it was received about a status and it got fixed. My G3 is also unlocked bootloader but still shows valid warranty online.
Hi, my moto g4 plus device tells yhat "camera is busy" and it tells to restart the device. Even i restarted and even i flashed a stock rom on my device. But same issue. The flashlight option is missing from my phone(from the notification bar settings).... Even tried with rather third party camera app. Same issue... Can anyone suggest me for this issue???

Camera focus problem

Hi al.. I have my s8 from around 2 mounts with no problem but from about 2_3 Days i se that my back camera if i dont use it or close it în task manager when i turn IT up again i have to shake my phone to focalize.. Than it works fine but next time i use it i have to shake again to focus.
Does others have this problem.. Its my phone camera or software?
PS.. When i shake i hear a focus sound in the back.. Like a click.
I think it's your phone camera, mine is still great... Did you drop it?
I dif not drop it... I have found others with this problem.. In order to make the camera focus you need to shake it.. It's very annoying..
Lightly whack the phone and the focus comes back on.
https://us.community.samsung.com/t5/forums/v3_1/forumtopicpage/board-id/GS8QA/thread-id/5524/page/2
Wife's complaining about the same issue. This is a COMMON problem with the S8(+). Sigh.. Samsung are useless.. cannot get a phone done properly these days.
I had the same problem on my Samsung Galaxy S6. Annoyi ng focus problem. Last week i update the S6 to Nougat and the problem was not everytime but sometimes. Its a strange problem. My S8 dont have this problem. I hope my S8 dont come with this problem. What you can do is reset everything wipe everything and try it again. I hope this solved your cam problem
Yes it is pretty common problem on many S8 and S8+ devices. There are thousands of users which have this problem, and it is HW problem, not SW. This will be new #cameragate issue. To test if it's caused by HW simply enter service mode by typing code *#0*# and select MEGA CAM button. If there is problem with focusing too, you have problem with camera module which is stuck and not properly lubricated.
Yeah I notice mine is blurry from time to time. Annoying when I'm trying to take pictures of my kids, ordered the Pixel XL 2 and cant wait to get rid of Samsung.

HI. I'm a user of POCO m3 global device and i want to know the problem of my phone

my phone was just 5 month old since i bought it. I always update my phone. and the problem started (when started to notice) at version 12.0.5 of the update. it won't turn on as it should whenever I restart or shut down then try to open it again. have I ever tried to charge to my phone and wait to be fully charged then open it? YES I wait for it and NO it never charge like it's dead. it wasn't even drained when I turned it off. I tried to open it m, access fastboot mode or recovery mode multiple attempts but in vain. And after some days passed of not charging it, it was drained (literally 0%) and whenever it got a charge, it just turned on by itself. My phone is now at version 12.0.8 and yet the problem to continues and even got worse. just yesterday morning, every apps that use started to crash like in the attached photos. (1st photo- flashlight not available.). I then try to restart it, but it never turn on again until now. I tried to access to recovery and fastboot but still in vain.. PLS HELP
RealTiz said:
my phone was just 5 month old since i bought it. I always update my phone. and the problem started (when started to notice) at version 12.0.5 of the update. it won't turn on as it should whenever I restart or shut down then try to open it again. have I ever tried to charge to my phone and wait to be fully charged then open it? YES I wait for it and NO it never charge like it's dead. it wasn't even drained when I turned it off. I tried to open it m, access fastboot mode or recovery mode multiple attempts but in vain. And after some days passed of not charging it, it was drained (literally 0%) and whenever it got a charge, it just turned on by itself. My phone is now at version 12.0.8 and yet the problem to continues and even got worse. just yesterday morning, every apps that use started to crash like in the attached photos. (1st photo- flashlight not available.). I then try to restart it, but it never turn on again until now. I tried to access to recovery and fastboot but still in vain.. PLS HELP
Click to expand...
Click to collapse
It's a motherboard error, complaining, cell phone replacement or repair.
rotoko said:
It's a motherboard error, complaining, cell phone replacement or repair.
Click to expand...
Click to collapse
is there a chance that the problem only exist in the firmware or a virus causes this? 'cause it never fell off since I bought it (6months ago). but something fell onto it but only caused a tiny bubble on its screen protector and the touchscreen work just fine as it never happens. which do you think is more likely??
RealTiz said:
is there a chance that the problem only exist in the firmware or a virus causes this? 'cause it never fell off since I bought it (6months ago). but something fell onto it but only caused a tiny bubble on its screen protector and the touchscreen work just fine as it never happens. which do you think is more likely??
Click to expand...
Click to collapse
The cause is unknown. Instead of guess what the cause is, go find Xiaomi repair center to inspect and repair for you.
Make use of Xiaomi warranty.
Backup your stuff, apps, and data. Prepare for factory reset as Xiaomi repair center may erase your personal data.
Don't push your luck assuming firmware or virus cause. Assume hardware issue first, this cannot wait once it pass warranty period deadline. ROM, firmware, software issues can be dealt with later, and can also be dealt by Xiaomi repair center.
pl1992aw said:
The cause is unknown. Instead of guess what the cause is, go find Xiaomi repair center to inspect and repair for you.
Make use of Xiaomi warranty.
Backup your stuff, apps, and data. Prepare for factory reset as Xiaomi repair center may erase your personal data.
Don't push your luck assuming firmware or virus cause. Assume hardware issue first, this cannot wait once it pass warranty period deadline. ROM, firmware, software issues can be dealt with later, and can also be dealt by Xiaomi repair center.
Click to expand...
Click to collapse
but i only bought it online. how can i know if it's warranty is still valid?
RealTiz said:
but i only bought it online. how can i know if it's warranty is still valid?
Click to expand...
Click to collapse
Warranty in general is at least 1 year.
The personal in Xiaomi repair center will judge the warranty. There are some conditions that will void the warranty. Check the Xiaomi warranty policy of your country/region yourself.
Warranty only covers the phone model you bought from local country/regions. I.E. phone bought from India will not be covered under warranty in Indonesia, this case, you bring the phone to India and repair it.
pl1992aw said:
Warranty in general is at least 1 year.
The personal in Xiaomi repair center will judge the warranty. There are some conditions that will void the warranty. Check the Xiaomi warranty policy of your country/region yourself.
Warranty only covers the phone model you bought from local country/regions. I.E. phone bought from India will not be covered under warranty in Indonesia, this case, you bring the phone to India and repair it.
Click to expand...
Click to collapse
well my phone was from overseas. Japan I think not sure. is this mean it's warranty wont be valid in the philippines?
RealTiz said:
well my phone was from overseas. Japan I think not sure. is this mean it's warranty wont be valid?
Click to expand...
Click to collapse
The repair center in your country will not deal with it.
If you want to repair it, you have to repair in Japan. The warranty is still valid in Japan in this case.
Or you can ask if the Xiaomi repair center in your country willing to repair it if you pay.
pl1992aw said:
The repair center in your country will not deal with it.
If you want to repair it, you have to repair in Japan. The warranty is still valid in Japan in this case.
Or you can ask if the Xiaomi repair center in your country willing to repair it if you pay.
Click to expand...
Click to collapse
okay.. thanks for your recommendation..
RealTiz said:
okay.. thanks for your recommendation..
Click to expand...
Click to collapse
Did u bough your POCO M3 from Lazada??? I think its a combination of hardware and software problem were almost there same issue bro, i just need to BURN my motherboard just to turning it on.
RealTiz said:
my phone was just 5 month old since i bought it. I always update my phone. and the problem started (when started to notice) at version 12.0.5 of the update. it won't turn on as it should whenever I restart or shut down then try to open it again. have I ever tried to charge to my phone and wait to be fully charged then open it? YES I wait for it and NO it never charge like it's dead. it wasn't even drained when I turned it off. I tried to open it m, access fastboot mode or recovery mode multiple attempts but in vain. And after some days passed of not charging it, it was drained (literally 0%) and whenever it got a charge, it just turned on by itself. My phone is now at version 12.0.8 and yet the problem to continues and even got worse. just yesterday morning, every apps that use started to crash like in the attached photos. (1st photo- flashlight not available.). I then try to restart it, but it never turn on again until now. I tried to access to recovery and fastboot but still in vain.. PLS HELP
Click to expand...
Click to collapse
Firstly you need to learn basic formatting because reading your story it's too hard.
If you bought with a credit card, make a complaint to your financial institution and apply for a charge back.
Same goes if you paid with Paypal, but that it's a bit more tricky.
No one will fix your phone because it'll cost more than what you paid for it.

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