Hi I have an issue with Redmi 9T. It is hard to complexly describe issue, but I will try. Suddenly phone stopped taking charge and turned off. Then it sometines take charge and sometimes not. I have completely cleaned charging port, took phone apart and changed battery. As soon as phone starts it works absolutely fine (charges everytime cabel is plugged in, power button works correctly etc.) until I turn it off for some time. Then issue appear again. I am only able to get is started, when taken apart and disconnect battery and then connect again. In this case it is also weird, because it needst phone to be on charger for some little time, then it lets me turn on phone. It looks like phone "thinks" it is completely discharded, but when suddenly works and it boots into phone, battery has normal charge. When phone is in state, that it does not respond to anything, when charger is plugged in, it takes 0.05A and do nothing. I have quite enough experience, but I have never come across issue like this. Do you have any ideas, how to solve this? Or any hint what should I try?
The same started happening to mine not long ago. I don't know the reason nor the fix. I got my battery changed but didn't seem to do much as it started happening again some weeks after.
I have exactly the same problem. Couldn't it be software?
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So, I've run into something that is scaring the crap out of me lol. If I turn off and on the phone while it is on the charger, the phone won't turn back on, it gives me the screen that the phone needs to be restored...if it isn't on the charger, all is well...anybody else able to reproduce this?
mine just reboots when you switch it off while on charge, but I charge from the mains, so not sure if its something it does from USB
I actually think my phone is faulty...it doesn't reboot at all...does the restore screen on or off the charger...gotta pull the battery to reboot...
FiyaFleye said:
I actually think my phone is faulty...it doesn't reboot at all...does the restore screen on or off the charger...gotta pull the battery to reboot...
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I would tell your carrier about it and see if they can fix / replace it or find a solution.
I had the device replaced, it was faulty, all good with this one, and its much snappier, that one had some issue. All is great now, amazing phone
I had that happen once. But I let the phone die after buying it. So it didn't really have a charger to do anything. I put the phone into bootloader then pulled the battery. Haven't seen it since.
I had similar. Phone had no batt, so put it on charge (in a 3rd party car charger), and restarted. Showed a blank screen. Tried multiple times, removing the battery for over 30 seconds. I really thought it was bricked.
Put it on the official main charger and left it until fully charged and it worked fine. This happened about a week ago and its been fine since. So there could be a bug, but seems ok.
I think I figured it out, at least on my phone... I found that if I hold down the camera button, even slightly, while im rebooting the phone it will go into the restore screen. Turns out that the skin I have my phone in slightly depresses the camera button, and was causing this issue over and over again. I wonder if the same thing is happening while you guys are plugging in the phone? Anyone care to try it out?
neo-havic said:
I think I figured it out, at least on my phone... I found that if I hold down the camera button, even slightly, while im rebooting the phone it will go into the restore screen. Turns out that the skin I have my phone in slightly depresses the camera button, and was causing this issue over and over again. I wonder if the same thing is happening while you guys are plugging in the phone? Anyone care to try it out?
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yea the same thing happened to me. i took the case off the phone and the problem was fixed. NO MOre rebooting problem
This problem started like 3 weeks ago. I locked my phone and left to do some stuff, and when I came back and unlocked it, the phone thought it was being charged. I plugged it to the charger and unplugged it to see if the problem would stop. It didn't. I plugged it in again and left it there for a few minutes, and when I checked, it was discharging. I pulled out the battery and put it back in after a few minutes and the phone turned on by itself. It is worth mentioning that I'm running Carbon 4.4 from NovaFusion, and you may already know that when the phone is plugged to the charger, it reboots if you power it off. When it turned on, it still thought it was being charged. It discharged after a few minutes, and I left it plugged in to charge while off... And when it turned it back on, the problem stopped. After that, sometimes when I plug it to the charger, it won't detect it, I have to reboot the phone for it to start charging.
A few days ago I turned it off with 85% battery left, and when it turned it back on it showed 0%... And now my phone shuts down without warning randomly. It also freezes and reboots when I plug it to the charger sometimes. I've tried changing the ROM, (to golden-guy's Omni and stock), but those problems persist.
That's why I ask, is it a bad battery o a damaged charging port? Thanks in advance.
Forgot to add, sometimes when it freezes and reboots, it freezes on bootanimation and restarts itself again...
Sounds like a bad battery to me, but wait and see what others will say. It may as well be a faulty usb charging port. If it just had random reboots, I could swear that it's the battery, but with the other stuff you said it seems like something inside the port has gone wrong and thinks it's charging when it's not and the opposite. Sorry, but can't help much as I've never had this exact problem (I've had a similar one) so I'm only guessing right now!
koragg97 said:
Sounds like a bad battery to me, but wait and see what others will say. It may as well be a faulty usb charging port. If it just had random reboots, I could swear that it's the battery, but with the other stuff you said it seems like something inside the port has gone wrong and thinks it's charging when it's not and the opposite. Sorry, but can't help much as I've never had this exact problem (I've had a similar one) so I'm only guessing right now!
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I forgot to say that it freezes on bootanimation and restarts. Does that bring any clue?
JuanVerguero said:
I forgot to say that it freezes on bootanimation and restarts. Does that bring any clue?
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That's normal when the phone has no battery left (or thinks it doesnt't). There just isn't enough power to boot the phone up, but it knows that there's some little power left so it continues to try booting unsuccesfully, resulting in a bootloop If you leave it to reboot for a few mins it might shutdown permanently. That means the battery has absolutely no power left (or it could think it doesn't, when it has, if it's damaged like yours).
S3 mini charging when unplugged
I bought a phone off ebay and was having the same problem. Random usb driver errors with pc and unable to connect with terminal, Startup loops because phone thinks its on charge etc..
Tried everything to sort it out and failed. Just after I was about to give up and bin the phone, I tried to slightly pry the little plate on the USB port upwards with something non conductive. Ding dong I heard to unplug sound animation and the charging icon disappeared
Had no problem since.
Ok, so I have had no issues at all since buying this phone at launch, and this randomly happened yesterday.
I was on my phone and checked the battery info as I do a few times a day, just to see what's using my battery the most, SoT, etc. I was at 87%, which was about right as it has been off the charger a few hours with some light use. A few hours later I noticed my actual battery icon was exactly the same, no drainage at all. I viewed my battery info, and the line was flat for a few hours and still said 87%, which is very inaccurate as I've been using it during those few hours. If I had to guess, I was realistically around 60-70%. Then, while looking at my battery info, it said 'battery critically low' and shut off. I plugged in the charger and the animation when the phone is off said 0%. I left it plugged in for like an hour, and turned it on and it still said 0%. I unplugged the charger and it immediately died. I was on pop rocks ROM when this happened. I then plugged it back in, because the phone would function as normal as long as the charger was plugged in. I booted into recovery and restored an old stock backup, even after that I'm having the same issue. I downloaded a stock ROM from here, wiped everything like normal, same issue. Here's the frustrating part -- I chalked it up to this battery being bad. But I have two batteries, and the other one I hardly ever use, but I've used it before and it was fine and normal. I put that battery in, I'm having the same stupid issue! I don't understand, no matter what ROM or batter I use, this is happening. This is so frustrating, I don't know what to do or why this is happening. The phone will not charge at all. Please, anyone I would greatly appreciate help. I searched for issues like this on Google and here but it's usually chalked up to a bad battery, but I know that's not the case here. I couldn't find the option in TWRP, so I downloaded 'battery calibrator' app and wiped my battery stats, still didn't help. Below is a link to picture of what it looks like when I charge it, it just stays like this. I've done it with fast charging on, off, and with the phone completely off, same result.
http://imgur.com/6375t5i [1]
Edit- One thing that was weird that also happened, was after I restored stock and then rebooted, I unplugged the charger and during the whole 'android is upgrading' thing where it shows the number of apps and such, the charger was unplugged and the phone stayed on for that entire duration. Then once it finished the upgrading thing, it immediately died. That is incredibly strange. Also someone mentioned maybe it's the charger plug in area not working properly, but that doesn't explain a battery going from ~70% to 0 instantly, and the phone not recognizing a charged battery and showing 0% even unplugged.
Also, in addition to everything above, even though I'm certain it's not a battery issue, I bought another official Samsung battery just because I really don't want an 800 dollar paper weight, and I know the battery was somewhat charged when I got it, and I put it in and have the exact same issue. I also just flashed stock firmware via Odin, same issue. I was able to do all of that with my USB plugged in -- but as soon as I unplugged it the phone turned off. This is so frustrating, I can't explain how much I would appreciate help, and maybe even send some money via Paypal for an answer to a fix.
Does anyone have any idea? Please, any suggestions would be greatly appreciated. I have heard maybe it's the charging port on another site, but that would only explain it not charging, not the sudden and instant drainage of two batteries that were both over 60%. I would really appreciate any suggestions.
It could just be something wrong with the phone itself. Bring it to a tmobile store.
Hello everyone,
I had a few problems with a phone and I'd like to hear a few opinions from you guys.
I bought a Redmi 4x online, out of the box it worked fine without any noticeable problems. I tried charging it with my computer and with a wall connector, everything was fine.
Then I let it charge overnight on the wall charger (phone was still on when I went to bed) and in the morning it was dead.
No more charging led, no signs of life while pressing the power button.
It was off the charger for a whole day after that, and when I tried booting it up, it was fine for a second, showing the boot logo, then it died again, this time showing a blue screen.
From that time, it never powered on again, and it still doesn't show any charging led.
What is funny though is that once I hook it up to my power bank, it clearly shows that it's drawing power.
I thought it could be a rom issue, problem is once I connect it to my computer, it doesn't show up in any tool I tried (xiaomi mi flasher) neither in device management in windows.
I opened it up and now it is sitting for a while with the battery disconnected, but I don't have any idea on how I could further diagnose it to find a way to fix it.
Should I just let it go or is there anything that I could try in your opinion?
Thank you for advices!
you can try going into fastboot/recovery and then assess your options depending on the outcome.
Hi guys, I have a huge problem.
Currently I'm on vacation in Croatia, where it's around 38-40 C every day. One day I had to log into an unsecured wi-fi. I know, i shouldn't have done that but it was urgent. Well, the same night (while charging) my phone turned off itself and I had to turn it back on on the next day. It worked the whole day until I opened the camera. Suddenly the phone went off and I wasn't able to turn it on. At first I thought the battery has drained so I plugged it into the original OP charger (dash). It gets warm while charging, but the LED is not turning on. After an hour of charging I still can't turn the phone on. Not even after a charging over night. There's also no vibration after holding the power button, neither holding the power-button for 20 (or more) seconds . I can't even get into recovery mode by holding volume-down and power.
I'm on original Resurrection Rom.
Is there anything else I could try? Could it be that some hardware is damaged (overheated)?
Since I'm on vacation there's currently no way for me to do any kind of unbricking until I find some phone-repair service.
I'm not a pro, but Im pretty sure the problem occur on the hardware side since the phone is not taking the charge and no vibration
I once had an Android phone (not 3t), the same thing occured, the phone I had had some hardware damage near the battery so I experienced the same problems you listed, ended up getting a new phone
Overheating is probably not the issue, at least not the 40C air temps you mentioned. These devices can probably something like 60C (internal temp at CPU or battery) before seeing any damage. Lot of folks live where it's just as hot as where you are, if not hotter. So I have to think the device is designed to work under such conditions.
Try holding the power button longer (a minute or more). I don't know about this device. But on my old HTC M8, there were instances where the phone powered off by itself. And the power button needed to be held over a minute, to make it boot. Although no charge LED is concerning.
Mine did the same a few days ago, was tethering and the phone just shut off. Buttons didn't work, no vibration, no charge LED, no anything. Thought it died but after plugging it into a PC it was detected as QHSUSB_BULK (hardbrick).
But it turned on normally after a minute lol.
Hallo. Mine also crashed. I was in the sunset playing game and taking pictures. Then phone suddenly got so warm and lagged, It turned off itself. No reaction. I connected into charger and then turned on hopefully. I think you must take care, because it has metal body and easy heating, and when heating it's lagging and not works good
My opinion is that it's overheat problem
BTslo said:
Thought it died but after plugging it into a PC it was detected as QHSUSB_BULK (hardbrick).
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You will see Qualcomm download mode message (QHSUSB_BULK) whenever the device is powered off. It needs to be powered on, at least to bootloader (or recovery or OS) for the PC to connect in any other way.
Update
After 3 days, it finally turns on and charges as expected. Don't know if it has to do anything with it, but i let it in the charger for 1 day.
but now another problem occured.
every time I press the homebutton the phone crashes and goes off. this only happenes if the fingerprintscanner is not requested.
i.e. unlocking phone with fingerprint, does not crash, but... pressimg homebutton to go back to home screen crashes.