Phone won't connect via USB - LG Optimus 4X HD

A couple of days ago I installed this ROM on my P880. Everything worked just fine except for the torch app, a known bug and whatsapp has some difficulties with changing from landscape to portrait mode or vice versa (I hardly use landscape mode so not much of a problem). However, when I connected my P880 to my computer today using the USB cable, neither my phone nor my pc gave any response or errors - nothing happens. My phone claims to be "discharging" when connected to a computer, but is does charge. The same thing happens when I plug my P880 charger into the wall outlet - nothing, but is does charge. My device is rooted and the bootloader is unlocked
Things I have tried so far:
Use 3 different cables
Use different PC's
Reboot phone and and switching it off/on
Disable USB debugging
Any ideas on how to fix this?

Is keeping the ROM mandatory to you? If not you can always change, I think. Not a very good resolution, but since not a pro, not anything else I can think of..

I'm willing to switch ROM, but I like this one when it works. the weird thing is that the USB connectivity suddenly stopped working. I didn't change any settings nor made I any adjustments to my phone. Also, when I turn my phone off and connect it via USB to my computer, it does get recognized and my P880 displays the charging animation. But when my PC begins looking for drivers it suddenly crashes (BSOD)

Beunhof said:
I'm willing to switch ROM, but I like this one when it works. the weird thing is that the USB connectivity suddenly stopped working. I didn't change any settings nor made I any adjustments to my phone. Also, when I turn my phone off and connect it via USB to my computer, it does get recognized and my P880 displays the charging animation. But when my PC begins looking for drivers it suddenly crashes (BSOD)
Click to expand...
Click to collapse
I got the BSOD several times too, with different ROMs. In my case it is caused by using Windows 8 and shutting the phone down (or rebooting it) while it is connected in anything other than 'Charging' mode. We know that Windows 8 drivers have issues with this phone, and this is just another of those problems.

Beunhof said:
A couple of days ago I installed this ROM on my P880. Everything worked just fine except for the torch app, a known bug and whatsapp has some difficulties with changing from landscape to portrait mode or vice versa (I hardly use landscape mode so not much of a problem). However, when I connected my P880 to my computer today using the USB cable, neither my phone nor my pc gave any response or errors - nothing happens. My phone claims to be "discharging" when connected to a computer, but is does charge. The same thing happens when I plug my P880 charger into the wall outlet - nothing, but is does charge. My device is rooted and the bootloader is unlocked
Things I have tried so far:
Use 3 different cables
Use different PC's
Reboot phone and and switching it off/on
Disable USB debugging
Any ideas on how to fix this?
Click to expand...
Click to collapse
that cm is basically an alpha version, it was the first rom on 4.3 we got for our device. plus, the kernel in it is also 3.4 alpha instead of usual 3.1 which is more stable, so check out official CM 10.2 for our device. you should not have any major issues with it.

When I plugged my phone into my AC charger this morning, It bleeped and confirmed that it was indeed charging. I tried my connecting to my PC and it connected like it should. I didn't turn my phone off overnight, nor have I tried any fixes. It seems like a self-breaking and fixing ROM
Flying_Bear said:
that cm is basically an alpha version, it was the first rom on 4.3 we got for our device. plus, the kernel in it is also 3.4 alpha instead of usual 3.1 which is more stable, so check out official CM 10.2 for our device. you should not have any major issues with it.
Click to expand...
Click to collapse
I will try the official CM 10.2. Is the kernel the only difference? (I'm fairly new to custom ROMs)
Thanks for the help everyone :good:

Eprj lacks sone features

You rezolve it?

Anyone?

Related

Problem: don't recognize charger & don't go in USB mode!

I've a problem after (more than one) firmware update....
My P970 don't recognize recognize charger & don't go in USB mode (PC don't view the SD card)
I try CM7 and Nova, I also have a brick after flashed a kernel Nova in a Rom stock.
After that I put a new Rom stock v10c by KDZ but now have this terrible problem....
How can I solve it....?
Many thanks
have you tried to do an hard reset?
interdan said:
have you tried to do an hard reset?
Click to expand...
Click to collapse
Yes by enter in the hidden menu (3845#*970#) but nothing change....
I have the same problem since 2 months. I'm currently with the last temasek Kang release, kernel nova 11c.
The only way to charge correctly the battery is to wait the phone self extinction, by low battery, wait around 10 minutes, and plug the charger. Another weird thing: when I plug the shut down phone to sector, it will autoboot (everytime).
Else, when I try to charge the phone, 2 different behaviours:
1) most of time it charges anyway, but not detected as charging. The phone overheat, and could self extinct because of that. Time of use with a battery charged like that is very poor.
2) sometimes, nothing happen. No charge.
I'm very bored by this bug.
Sent from my LG-P970 using XDA App
gornog said:
I have the same problem since 2 months. I'm currently with the last temasek Kang release, kernel nova 11c.
The only way to charge correctly the battery is to wait the phone self extinction, by low battery, wait around 10 minutes, and plug the charger. Another weird thing: when I plug the shut down phone to sector, it will autoboot (everytime).
Else, when I try to charge the phone, 2 different behaviours:
1) most of time it charges anyway, but not detected as charging. The phone overheat, and could self extinct because of that. Time of use with a battery charged like that is very poor.
2) sometimes, nothing happen. No charge.
I'm very bored by this bug.
Sent from my LG-P970 using XDA App
Click to expand...
Click to collapse
Check your USB cables, the pins inside. As well as the USB connector on the phone itself. Use a different cable. I/we never had this kind of problem (not charging so it isn't a bug or something but rather hardware problem. If not USB, battery problem.
If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test. I'm after the warranty for you if you still have the problem in Froyo.
That auto reboot is well known for CM7. Again, this also is not a bug but a feature.
gabwerkz said:
Check your USB cables, the pins inside. As well as the USB connector on the phone itself. Use a different cable.
Click to expand...
Click to collapse
Checked with 3 different cables and several chargers (including original ones). Phone USB connector seems OK, but cannot really check it.
gabwerkz said:
battery problem.
Click to expand...
Click to collapse
2 batteries. Reproducible.
gabwerkz said:
If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test.
Click to expand...
Click to collapse
Did full wipes several times, but no effect. It's hard to go back to stock Froyo without phone-to-computer connection, and I don't want to loose ability to root my OB after that.
gabwerkz said:
That auto reboot [...] is not a bug but a feature.
Click to expand...
Click to collapse
OK
Anyway, thanks for all. If we are only few people with this bug, it seems to be a material failure indeed.
I may look for the warranty, but as I changed country (from EU to Canada), it will be quite complicated, and I need my phone :/. Just a (stupid) idea, maybe the phone didn't support the 110V, after 220V charging usage (but charger should support these 2 voltages).
If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test. I'm after the warranty for you if you still have the problem in Froyo.
Click to expand...
Click to collapse
I come back to v10b europe, across a lot of wipe....
Fortunatly the charger was recognized....
The problem was't "don't charge" but "not recognized"
Unfortunately today try to flash the Quasar kernel, and now I have the same problem.....
The charger, charge, but don't recognized and the USB to PC don't work's.....!!!
Turn phone off
Remove battery
Wait 10 seconds
Put battery back.
Turn phone on
I had this issue on my Optimus Black with stock Froyo rom.
My symptoms were:
- device recognized as 'modem' in Windows but no option in Android to switch into "USB Mode". Phone update software would still recognise phone was connected and I could run a firmware recovery using LG tools. Reflashed and reset to factory many times didn't fix the issue.
- if phone switched off and plugged into charger or USB would go into "SW Upgrade" mode
- I could force "USB mode" to appear on the phone by opening the hidden menu and switching the USB to "AP Mode" I think it was.
- I found the USB connections would disconnect after a period of time and sometimes the "AP mode" workaround wouldn't work.
- tried different cables, chargers and PCs and all present the same problems.
- having the battery unplugged for an extended period would get the phone working temporarily but the problem would come back after a short while.
Eventually got on to LG Support and sent it off for repair. They replaced the motherboard as faulty.
I think the problem may have been caused by a faulty car charger that I have since replaced, but ultimately replacing the motherboard on the phone fixed the problem.
If your phone is covered under warranty, I'd be sending it off for repair as it is probably a hardware issue.
brownowski said:
I had this issue on my Optimus Black with stock Froyo rom.
My symptoms were:
- device recognized as 'modem' in Windows but no option in Android to switch into "USB Mode". Phone update software would still recognise phone was connected and I could run a firmware recovery using LG tools. Reflashed and reset to factory many times didn't fix the issue.
- if phone switched off and plugged into charger or USB would go into "SW Upgrade" mode
- I could force "USB mode" to appear on the phone by opening the hidden menu and switching the USB to "AP Mode" I think it was.
- I found the USB connections would disconnect after a period of time and sometimes the "AP mode" workaround wouldn't work.
- tried different cables, chargers and PCs and all present the same problems.
- having the battery unplugged for an extended period would get the phone working temporarily but the problem would come back after a short while.
Eventually got on to LG Support and sent it off for repair. They replaced the motherboard as faulty.
I think the problem may have been caused by a faulty car charger that I have since replaced, but ultimately replacing the motherboard on the phone fixed the problem.
If your phone is covered under warranty, I'd be sending it off for repair as it is probably a hardware issue.
Click to expand...
Click to collapse
All of my thanks.....
I've the same problems.... All as you described!!!!
So after Christmas time, I'll go to an LG support!
problem found
I own a celular repair shop in baja california mex. and resently some one brougth a LG Optimus Black p970 with same simptoms ,heat,no power no usb conectiviti and chargin problems I found a conector on the inside part of the device with some visual damage (over heat) plastic melted just a minimun part of it so i check the hole conector and I found that two conections were lost by the overheat problem
this is coused by the charging conection bad design
Ask no Problem
I'm having same problem as stated by others. This is annoying me.
Its just been 2 months I've got this phone and it feels real bad to face such problems so soon.
Am facing problems like. I connected my phone to PC via USB and it showed me the option to Turn on Mass Storage, I clicked on it and it showed me the Mass Storage Drive on my PC too. But in just minute or two it disconnected on its own and SD Card started scanning and again it got connected by its own but then after that it disconnected again and it on pc it started to install drivers again. Which were already installed like 5 or 6 of them.
I formatted the phone twice. Removed the battery for around 5-6 minutes. Used like 4 USB cables. Installed LGE drivers from LGE Software updater.
This is so bad.
What software are you guys using? Which ROM?
I've also been experiencing this situation, one time this problem caused a loss of all my SD data! (my sd card got corrupted)
I'm on Zeus V6.11 right now, and I must say that USB storage is working great for me in CWM Recovery, even though it doesn't work on my phone when it's turned on in Android.
How to check whether it's an hardware problem in my phone, or just a fault of my compuer?
Experiencing this problem for around two months now. I suspect my charger to be damaged. Since I can charge the phone via the USB port. When I try to charge the phone via the charger it doesn't respond, but when I pull it off the charger the phone will boot. Had the motherboard already replaced by LG service center, but the problem wasn't solved.
The phone can connect to PC without any problems. PC can connect to mass storage.
So now, I'm using a Corby II charger and it seems to do a great job at charging my OB
N00BY0815 said:
What software are you guys using? Which ROM?
Click to expand...
Click to collapse
Currently I'm using Stock Root v20b rom.
No software's nothing, as I stated I even formatted my phone twice.
It was working well around 2 days back. I had just plugged my usb cable to phone via pc and then all of a sudden the phone started acting weird, like it was connecting and disconnecting frequently, and then it started to install the LGE drivers by itself, which were already installed didn't even touch them nor uninstalled anything.
Tried using Sony Xperia Neo V's USB cable too, but no luck.
Once I lost my USB cable.
then i brought a cheap uUSB cable. Icud transfer data from PC, but charging rate was really very SLOW... nearly 4hr.!!
Now i replaced it with new Original one, n every thing working Perfect...
I am seeing the same problems - charger is not recognized and USB mode is not working. Different cables / chargers, different Win7 and Ubuntu PCs.
I formerly used a rooted V20o from here, with which the problem first appeared, now I went over to Zeus 6.22, which still shows the same problems.
I believe the hardware is faulty.
Can anybody help me how to regain warranty? I have the stock V20o (unrooted), but since USB does not work, I cannot flash it the regular way. Is it possible now to flash from sd card?
Try with LG standard update software, you have the emergency menu....
If you want to viwe your sd card try the Samba Filesharing app. I have the same problem on cm7 and with this App i can see my SD Card

[Q] Connecting phone with dead battery to laptop caused BSOD

Running the latest CM10.1 my phone's battery was dead so I connected it via USB to my laptop (which was being powered by A/C) to charge it and about 10 seconds later my (Win7 x64) laptop had its first ever BSOD! So I restarted the laptop but it seemed to get stuck on the BIOS screen every time but then I unplugged the USB cable connecting the phone and the laptop then booted normally.
Anyone ever experience anything like this? Any idea what could have caused it? A driver issue maybe? Since this was my first ever BSOD I'd really like to know why it happened since I'm really paranoid about my laptop's health
Maybe a power surge do u have any other usb devices connected
Sent from my LG-P880 using xda premium
Is bsod means blue screen?
AlderCass said:
Running the latest CM10.1 my phone's battery was dead so I connected it via USB to my laptop (which was being powered by A/C) to charge it and about 10 seconds later my (Win7 x64) laptop had its first ever BSOD! So I restarted the laptop but it seemed to get stuck on the BIOS screen every time but then I unplugged the USB cable connecting the phone and the laptop then booted normally.
Anyone ever experience anything like this? Any idea what could have caused it? A driver issue maybe? Since this was my first ever BSOD I'd really like to know why it happened since I'm really paranoid about my laptop's health
Click to expand...
Click to collapse
Is bsod means blue screen? If yes then it happens with me a lot of time. It is the driver problem. Uninstall all adb, fastboot and device specific driver and reinstall device specific driver only. Also shut your phone down and reinsert your phone's battery and boot it up. Then connect your device in charge only or any mode. USB Tethering caused me blue screen and CM 10.1 too. I hate CM.

[Q] USB Connection not detected - Strange charging bahavior

Well this problem drives me crazy.
My phone (i9070) doesn't make any sound when I plug it on my computer or charger and no charging indication appears either on the phone.
On computer side device appears under the storage devices.
However is seems that the power connection is working since if I restart the phone while the power plug is still connected the charging indicator appears. In addition after the restart the battery seems to reach 100% extremely soon (which is not normal at all). Unplugging the charger (or the computer) doesnt detected either by phone, the charging indicator is still active until restart.
I tried to factory reset the device and still "no juice".
I have tried 3 different cables with two computers where the device was connected few days ago without any problem.
I don't know what should I suspect.
Faulty battery? Faulty data connection on phone plug? OS based issue?
Any ideas?
limbo666 said:
Well this problem drives me crazy.
My phone (i9070) doesn't make any sound when I plug it on my computer or charger and no charging indication appears either on the phone.
On computer side device appears under the storage devices.
However is seems that the power connection is working since if I restart the phone while the power plug is still connected the charging indicator appears. In addition after the restart the battery seems to reach 100% extremely soon (which is not normal at all). Unplugging the charger (or the computer) doesnt detected either by phone, the charging indicator is still active until restart.
I tried to factory reset the device and still "no juice".
I have tried 3 different cables with two computers where the device was connected few days ago without any problem.
I don't know what should I suspect.
Faulty battery? Faulty data connection on phone plug? OS based issue?
Any ideas?
Click to expand...
Click to collapse
What ROM and what kernel you are using?
Sent from my GT-I9070 using Tapatalk
Sorry forgot to mention these info:
Kernel
3.0.31-CoCore-EP-8.2
Updated to 8.2 after the problems I had CoCore 8.0 until the problem appeared.
ROM
LightJB v1.2
I used to work with JellyMod v4.0 until the problem appeared and I switched to LIghtJB v1.2 to test if the problem fixed but the same behavior here.
Should I replace my battery?
Is there any way to check if the USB connection gets detected by the phone hardware (a diagnostic procedure)?
limbo666 said:
Sorry forgot to mention these info:
Kernel
3.0.31-CoCore-EP-8.2
Updated to 8.2 after the problems I had CoCore 8.0 until the problem appeared.
ROM
LightJB v1.2
I used to work with JellyMod v4.0 until the problem appeared and I switched to LIghtJB v1.2 to test if the problem fixed but the same behavior here.
Should I replace my battery?
Is there any way to check if the USB connection gets detected by the phone hardware (a diagnostic procedure)?
Click to expand...
Click to collapse
Put the phone in download mode, connect to PC via USB cable and open Odin. If the phone connects, I recommend a reflash with one firmware.
mathei said:
Put the phone in download mode, connect to PC via USB cable and open Odin. If the phone connects, I recommend a reflash with one firmware.
Click to expand...
Click to collapse
Device cannot be detected either download mode.
:crying:
Am I doomed?
limbo666 said:
Device cannot be detected either download mode.
:crying:
Am I doomed?
Click to expand...
Click to collapse
Install Samsung USB drivers.
http://developer.samsung.com/android/tools-sdks/Samsung-Andorid-USB-Driver-for-Windows
shut_down said:
Install Samsung USB drivers.
http://developer.samsung.com/android/tools-sdks/Samsung-Andorid-USB-Driver-for-Windows
Click to expand...
Click to collapse
Drives are already installed.
The phone is not responding on the cable when it is connected to its usb port.
Computer doesn't detect any device either.
Any ideas?
limbo666 said:
Drives are already installed.
The phone is not responding on the cable when it is connected to its usb port.
Computer doesn't detect any device either.
Any ideas?
Click to expand...
Click to collapse
Is it charging? Bad cable? Change USB port on PC, put it in some other.
You said you have charging problems? It is not shown (in phone, procentage is not going up) or it is not charging at all?
Luckily for u it's a broken flex (cheap) it costs $10 including tools to fix it yourself on ebay
Sent from my GT-S5367 using xda app-developers app
Hi All,
I also have the same problem.....
Can anyone help me.....

Charging issues ( Cannot connect it to PC, It says USB when I plug it into a wall )

So I'm having issues.
As of right now I don't really know what the problem is.
My phone will not connect to my PC anymore. It doesn't say "Connected as a media device" or anything.
I can't connect it to my PC with Odin in download mode either
My phone will not charge anymore (Using Ampere, it charges at about 220mA. It'll go all the way down to 10mA and for 4 seconds or so it'll be at a high mA like 470mA)
It is not my charging brick (I've used Three and I tested them on my other phones, the bricks work fine)
It is not my charging cable (I've used several, and again, I've tested with my other devices and it works flawlessly)
It is not my battery, I have 4 and I've switched between them all
It isn't my PC (I reinstalled all the drivers, and it worked with my Note 3 immediately)
I've tried pushing the cable down while plugged in, and up. It doesn't do anything.
My ROM that I'm running: Maximum OvrDriVE, it is a Note 5 port. Android 5.1.1, with xposed.
My kernel is Emotion r23. I'm on DOK2 baseband.
I've reflashed this ROM, and PacRom. Same issues.
I've flashed different kernels. Same issue.
Right now I'm going to try to go back to a different ROM that I was using that I know for a fact works fine.
(Tried it, it was Rapture 8.1, android 5.1.1, kernel: Emotion Kernel 5.1.1 r21. Nothing changed. Fast charging enabled, still said was being charged via USB when it was plugged into the wall. )
A physical inspection of my USB port on my phone, it looks fine.
I cleaned it too. Still, same issues.
So this only leads me to believe its a physical problem.
Can any of you guys help me out? Because I'm still not sure exactly what the problem is, and I need help
Its your phone, I had the same issue. Warrantied it through tmobile. Exact same problem. It is frustrating for sure.
rosedog said:
Its your phone, I had the same issue. Warrantied it through tmobile. Exact same problem. It is frustrating for sure.
Click to expand...
Click to collapse
Damn. Well, i thought so. I'm just going to replace the Micro-USB port then. That's less than $50 vs a new phone which is about $230
I don't have warranty. I bought it off amazon and it's been perfect up until now. I'm sure I caused the problem and 'll be careful not to do it again.
The scary thing is that I'm not 100% sure that it's the MicroUSB port. It can't really be anything else but I just don't want to buy this and then it turn out to be something else. I guess I'll have to try though.
So, update: Replaced USB Port.
Broke LCD Screen.
*sobbing in a corner*
Oh and it appears as if my USB Port doesn't work still (Same issue. It does work to a point but as of fast charging I dont know but when I turn it on and unlock it my comptuer doesnt recognize it)

Phone Won't Charge Unless I Restart

Hi,
I've been using my Redmi K20 Pro since November and I encountered a problem where my phone won't charge. I tried my backup charger and usb-c cable but it still didn't work. Once I restarted the phone it began charging again. Based on my testing once I unplug the charger I need to restart again to see the lightning icon charging indicator. I also noticed that the charging speed is very slow unlike how it used to. I am using xiaomi eu and I updated to the latest version thru the update app but still having the same result. Has anyone encountered this or have an idea on how to fix it? I see lots of similar issues with xiaomi phones but of different model on google but I can't find anything useful.
Thank you
jegtugado said:
Hi,
I've been using my Redmi K20 Pro since November and I encountered a problem where my phone won't charge. I tried my backup charger and usb-c cable but it still didn't work. Once I restarted the phone it began charging again. Based on my testing once I unplug the charger I need to restart again to see the lightning icon charging indicator. I also noticed that the charging speed is very slow unlike how it used to. I am using xiaomi eu and I updated to the latest version thru the update app but still having the same result. Has anyone encountered this or have an idea on how to fix it? I see lots of similar issues with xiaomi phones but of different model on google but I can't find anything useful.
Thank you
Click to expand...
Click to collapse
Sounds like there's and issue with charging port and daughter board, if you've done a reinstall. Does the same thing happen when charging from a laptop or pc?
sofir786 said:
Sounds like there's and issue with charging port and daughter board, if you've done a reinstall. Does the same thing happen when charging from a laptop or pc?
Click to expand...
Click to collapse
When charging from a laptop or pc it seems to work fine
jegtugado said:
When charging from a laptop or pc it seems to work fine
Click to expand...
Click to collapse
Ah okay, that's really strange, I was thinking it might be the port but if it works fine on USB then maybe not, and you've tried a completely different plug and cable aswell?
Do you use any battery charge limit apps?
If you are like me flashaholic, then sometimes with dirty flashing rom gets messed. Try flashing stock (fastboot rom) miui to teset everything to stock and then see if it charges normally. If not there could be hardware issue
With regards to the replies above..
I've only flashed once to Xiaomi EU. I've also tried a different usb-c cable
I notice that when I plug my phone to my laptop, it keeps getting disconnected and reconnected for any small movements of the cable
Sometimes I get fast charging when I perform a restart so it starts to charge
I don't use any battery apps or any cleaner apps
jegtugado said:
With regards to the replies above..
I've only flashed once to Xiaomi EU. I've also tried a different usb-c cable
I notice that when I plug my phone to my laptop, it keeps getting disconnected and reconnected for any small movements of the cable
Sometimes I get fast charging when I perform a restart so it starts to charge
I don't use any battery apps or any cleaner apps
Click to expand...
Click to collapse
Sounds like the charging port has an issue, the fact if it is connecting disconnecting from movement of cable points to it I reckon
Hello,
Have you solved your problem? I have the same insue and I can't solve it, the last option was to flash the last oficial global rom (fastboot methdo), but it didn't solve it ...
Thank you.
Hi,
same issue i am facing with my K20 PRO since last 8 months.
Tried everything, still not working.
Issue: Not charging unless restarted, same is when i plug it into the laptop. everytime i have to restart it.
Can someone please give me a good solution to it. Has anyone resolved this issue ?
dimazukz1 said:
Hi,
same issue i am facing with my K20 PRO since last 8 months.
Tried everything, still not working.
Issue: Not charging unless restarted, same is when i plug it into the laptop. everytime i have to restart it.
Can someone please give me a good solution to it. Has anyone resolved this issue ?
Click to expand...
Click to collapse
So, I have this issue on my another phone poco f1 what I did was clean the charging port with some stick and cotton. Basically its a charging port issue, you have to clean the port or take a service to clean port completely or change port this issue will be solved
Mi 9T (Global) have the same issue, i check with USB Tester...
every restart the charging system is reset.
Before restart: 9-10W
After restart: 16-17W
Same adapter & Same cable & same time
Some times the phone not charge at all
Restart solve this issue
When i connect the phone to computer it's not work
Restart the phone when his connected to the computer solve the issue
Xiaomi fix you hardware & software !!!!
Hello
I have the same issue with my two phones MI 9 T PRO, never used USB C before, even 3.5mm jack, i have the error message on the notification and i cannot remove it: "Can't play audio through adapter. Use digital earphones or earphones with 3.5mm plug". when i plug my charger into my phone the fast charge is displayed but it won't charge, The only way to charge my phone is to reboot it and it's charge like there is no problem! but the error message is still on notification but charge with fast charge! I bought my phones march 2020, and the issue appeared since sept - oct. I have the latest update MIUI 12.0.3.
I facing same problem on my mi9tpro with global miui12 what's going on guys how to fix the problem?
Hey guys, I think I have the answer!
Its all about the MIUI optimization, you just have to go into developer options, search for MIUI optimization, turn it off, restart, turn it on and restart again. Everything should go well after this! I hope all of you end with this headache!
jegtugado said:
Hi,
I've been using my Redmi K20 Pro since November and I encountered a problem where my phone won't charge. I tried my backup charger and usb-c cable but it still didn't work. Once I restarted the phone it began charging again. Based on my testing once I unplug the charger I need to restart again to see the lightning icon charging indicator. I also noticed that the charging speed is very slow unlike how it used to. I am using xiaomi eu and I updated to the latest version thru the update app but still having the same result. Has anyone encountered this or have an idea on how to fix it? I see lots of similar issues with xiaomi phones but of different model on google but I can't find anything useful.
Thank you
Click to expand...
Click to collapse
The same with my mi9t. Do you already found a solution?
Alfinsito said:
Hey guys, I think I have the answer!
Its all about the MIUI optimization, you just have to go into developer options, search for MIUI optimization, turn it off, restart, turn it on and restart again. Everything should go well after this! I hope all of you end with this headache!
Click to expand...
Click to collapse
Is this tested?
HarShelbyyyy said:
Is this tested?
[/QUOTE.
Doesn't work tho
Click to expand...
Click to collapse
Hello team!
I was facing the same problem on a Redmi 3S Pro, and decided to come by and let u guys know my handling of this.
My phone has quiet some years of usage right now and its a bit beaten, but still runs great.
Out of nowhere it decided to not charge anymore, and I noticed it would charge with device off or after a plugged restart.
It decided to work again after i entered fast boot (unplugged) and exited fastboot back into system then plugging.
Not entirely sure this fixed it, but looks like it.
Some notes:
I was trying a couple things like trying to enter safe mode and combinations of plugged/unplugged restarts
I did not factory reset
I did not let it end the fastboot loading (force rebooted somewhere in the middle of loading fastboot)
To fastboot, power off the device, then press power button and down volume
If u dont know what u doing, DO NOT go sticking metals into your usb port to clean it, cause if it charges when off, this is NOT dirt problem. Be advised..
I was able to reproduce the issue (sadly) after playing with normal reboot/fastboot then reboot , but then i tried reproducing the fix:
Unplug and turn off device
Turn on to fastboot (down volume + power)
Now, first time, after entered fastboot screen, i rebooted and it did not work, then i tried again but i had to let it run a bit longer on fastboot screen then reboot for it to work
I know the fastboot performs some system checks while loading, but i don't have much time to keep digging this, maybe another day i'll come back with more info.
I'm guessing its system issue, not hardware (at least in my case).
But now, charging is working even after normal reboots for me, so i think i'm onto something =]
Hope this can be useful to someone.
Happy hacking!
Cheers
Hello everyone , I had the same issue and fixed it .
My solution was to change the usb-c port (daughter board). everything works as its supposed now.
I looked everywhere for software issues , flashed many different roms to no avail.
There was only one rom that tipped me that there was a problem on usb c port though, ita pixel experience rom, it showed a persistent notification that there was something plugged in the usbc when there was nothing there.
once I replaced my port (cost only 14$ for original with fast charging IC) ,and upon inspection of my replaced board under microscope , the last pin on the left in the usb C port was bent in a way that was impossible to see with a naked eye, now I bought a usb c port and soldered it back to my original daughter board and I keep it as spare one.
Hope this will save you your battery and your time.
(if you keep using like this and have to restart everytime for a charge , it will eventually fail , better replace it when you have time , than your phone going off when you most need it)

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