Very strange problem - Xiaomi Mi 8 Questions & Answers

Hi guys, I have a strange problem with my other Mi 8.
A week ago the screen suddenly turned off while device was still on, so I could connect it to pc and transfer files or listen sound from device. I flashed it through fastboot to stock rom but I didn't solve the problem. After 7 days, the screen turned on and it seems working fine. I think it's not a software problem cause I flashed it, but it can't be a hardware problem cause now it works...
It's a Mi 8 China version, unlocked by unofficial way with global ROM installed: should I unlock it officially? Could be this the problem?
What do you think about? Thank you.

Related

Mi 8 does not turn off or reboot after some hours turned on

I'm having the same problem in all versions. After running on the phone some hours, if you try to reset or power off the phone, it doesn't turn off at all. The screen goes off but the phone is still on. It keeps working. It can be tested turning on flashlight and powering off or resetting it, the flashlight doesn't turn off. It does not turn on again until you force reset by pressing a while the power button. I think it's related to the GPS problem, after some hours the GPS stops working, and this problem also appears.
Looks like I have the same problem.
bassbounce said:
Looks like a classic rma, contact the store where u bought it and do a warranty claim.
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I think its a firmware issue, because I'm not the only one affected by this problem. Two friends on miui 9 and me on miui 10...
Nvm got the same bug.
I've installed with miflash latest miui 10 global beta, ant the problem is still here. I've found this problem only when gps stops working
prototovsky said:
I've installed with miflash latest miui 10 global beta, ant the problem is still here. I've found this problem only when gps stops working
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I just noticed that I have the same problem.
If I want to reboot the phone after a few hours he won't reboot and the screen stays black very annoying problem.
Same problem with last miui 10 eu
Dont have this problem on official global beta miui 8.8.7, sounds like software related issue to me rather than a hardware problem;
Yes, I think this because before unlock the bootloader and flash the miui 10 Eu i dont have this problem
Seems that this problem is fixed with the last miui 10 Eu 8.8.9
achickennugget said:
Dont have this problem on official global beta miui 8.8.7, sounds like software related issue to me rather than a hardware problem;
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I have now this version and the problem is there again... installed with miflash. 8.8.7 is still buggy with GPS and reboot. Let's see 8.8.9...
Xiaomi.eu has noticed this problem on their latest version too: https://forum.xda-developers.com/mi-8/how-to/rom-miui-10-8-8-9-xiaomi-eu-t3827802 (see changelog)
Hello guys, I'm facing this problem too on MIUI Global Stable 9.6.4.0, I reported the issue on MIUI forum, it would be great if you could kindly confirm my bug report to obtain more attention. Thank you. http://en.miui.com/thread-3726710-1-1.html

Bluetooth Problem

I have a problem with the Bluetooth module. When I first time turn it on, it's working normally but the second time it's never start. The only way is the reboot then work normally again, once.
ROM: MIUI 10 Xiaomi.EU 8.8.9
Same here my friend.
Is Rom problem
I use same rom and I have same problem too. What about who uses global rom?
Use 8.8.30 xiaomi.eu, no issues here (had similar BT issues on earlier versions). If you don't run this one or later maybe a clean flash helps.
Szlavonya said:
I have a problem with the Bluetooth module. When I first time turn it on, it's working normally but the second time it's never start. The only way is the reboot then work normally again, once.
ROM: MIUI 10 Xiaomi.EU 8.8.9
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This is a known problem with an easy fix.
BT stops working after deactivating it once or going to airplane mode.
You have to:
Put the phone in airplane mode
Reboot to recovery
Wipe ART/Dalvik and Cache
Reboot to system
afterwards it works.
Thanks to PMShodan for this hint
https://xiaomi.eu/community/threads/8-9-13.46383/post-444499
I tried this method, it works for a few days, then the problem recurs! Tt the moment no definitive solution
Do you think the problem is of the bluetooth driver, or is it a bug of the miui 10? strange that the xiaomi team has not yet found a solution
Hi guys, I still have the bluetooth bug, I have the miui 10 stable (oreo based) of the miui eu team. Is there a definitive solution? thank you
Same issues with the Bluetooth on Mi 8 Global with Miui 10 and I need to know if it is hardware or software, cause I want to use a custom Rom and I need to know if I am to use the warranty
- Bluetooth sometimes tries to connect to inactive device;
- Sometimes in messenger the phone doesn't switch to Bluetooth
Bluetooth is not working at all on MIUI 10 after air update.
When trying to turn it on it just shows error notification in the bottom of screen.

Xiaomi Mi 8 Wifi/Hotspot Reboot Problem (!)

Hello Everyone,
I have a problem on my Mi 8, When i switched on the wifi/hotspot my device is reboot. If i use eu.rom, i don't have this problem but if i use other custom roms, i have this problem. This problem start's reason i cancelled the unlock bootloader options on developer options. After i unlocked my bootloader lock but this problem still i have. Now i want to use pixel experience rom but if i install the pe rom, i have this problem. How to i can fix this problem clearly ?
I had the same problem in my Mi8pro. When I change the region setting to any other country problem fixing but one or two days later comes again. At that time I change again. I hope it will be fixed next update.

No SIM signal or wi-fi after update

Hi everyone,
I have a big issue with the xiaomi.eu Miui 12 20.7.2 and other after this...
After install in my phone (Mi 8) I dont have access sim card. Is like that I dont have any sim card. And no wifi to.
I've done first a dirty install and after a clean install but the problem continued.
After I was rollback to the 20.6.18 version where all works fine! if I upgrade again the problem still the same...
What can I do?
Thanks
Same issue
Hi, I have the same issue, in my case that issue started once I installed Miui 12 20.07.16. I tried installing other ROMs without fix this problem, I will wait until they deliver a new version waiting they solve this problem.
Which TWRP did you use to flash the rom?
I don't think it is a software problem if you have the following symptoms, No WiFi but Bluetooth, no service but detect SIM card, random reboots out of nowhere or when trying to turn on WiFi, unknown baseband and it gets hot, apparently it is a processor SoC solder problem

Question Redmi Note 10 5G baseband lost problem

Hi everyone,
My phone (Redmi Note 10 5G China, camellia) was lost baseband a week ago for no reason. The phone lost signal when I saw, and can't read SIM card 1 hour later. After reboot, baseband version in setting turned to unknown. The MIUI version when this problem occurs is 13.0.9. I tried to flash MIUI to the version at the time of the problem and older version (13.0.3 and 13.0.8) to repair baseband followed with tutorial on internet but had no effect.
When I flashed MIUI 13.0.4 and try to startup, the phone turn to black screen after the Redmi logo appears about 10 secs later, and then nothing happens.
The same problem happened to this phone half year ago. At that time, there was magisk in the system and I think magisk destroyed system and tried to flash to repair the system. Finally, baseband was repaired by flash MIUI 13.0.4, but baseband will lose by reboot, so I flashed again, it was solved. But a month later the same problem happened again, but it only lasted a day, and the next day it repaired itself, in the meantime, I'm just using my phone as before. About a month later I upgraded to MIUI 13.0.9 and didn't occur any problem. At that time, as long as this fault occurred, flash MIUI 13.0.4 could always solve it.
Did the failure occur on the motherboard or just is a software problem like before? If there is no hardware problem, how to solve the problem completely?
Sure Is not a magisk problem . And i dont think is related to board, or a new flash dont solve. I think Baseband is related to kernel. Probably latest update have some bugs. Or more probably u have made a wrong flash procedure. If u put the sim on second slot have same issue?
wetito said:
Sure Is not a magisk problem . And i dont think is related to board, or a new flash dont solve. I think Baseband is related to kernel. Probably latest update have some bugs. Or more probably u have made a wrong flash procedure. If u put the sim on second slot have same issue?
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All SIM card slots are unavailable.Is flash still the problem?
i didnt never encountered this problem, i can help u so much

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