Hey, I just got a second hand Mi A1 that randomly reboots. At first, I thought that this was a battery problem. The first time it started rebooting was after a reset. It showed that there was 10% of battery remaining but it just powered off. Then when I charged it again, it started charging from 1% and on 56% (It showed 56% on the off screen) when I turned it on, it showed that there was 71% (Instead of 56%). But I then later used the phone to 0% and then charged it to a 100% (Somewhat calibrated the battery) it shows the percentages just right. But now I notice that there are random reboots. For instance I was browsing online and received a call and it immediately rebooted (The battery percentage was fine). Could this be a battery issue? Perhaps a software issue? Any ideas cause I'm lost,
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I've noticed some strange behavior from the battery indicator on my Omnia7 recently. Quite often after I reboot thew phone, the battery indicator will show a significant difference once it restarts (usually shows less power). Yesterday I left my phone charging overnight and it showed zero battery on the indicator in the morning. I rebooted and it then showed full.
I've tried a battery draining app to fully discharge it, but it hasn't fixed the problem. Is there a fix? Do I need to buy a new battery?
This also happened to me. When I rebooted the phone it showed 50% less charge on the battery. I then pulled the battery for a minute or two and then turned on the phone and that fixed the problem.
giobooo said:
This also happened to me. When I rebooted the phone it showed 50% less charge on the battery. I then pulled the battery for a minute or two and then turned on the phone and that fixed the problem.
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Once happened to me too, just a weird anomaly! Pulled the battery, like giobooo said.
Cheers,
I've been having this weird problems with my N7 32GB recently, it started to happen about 3 weeks ago, then it stops and starts again this week.
It seems that the battery percentage is not being reported correctly, I remember the first time it happened is that I still have > 50% battery, then
the device shutdown and booted and then the screen flickered and shutdown and booted again it went on in this cycle for about 2mins and every it
went into this cycle the screen flickers which is kinda alarming and asked that it be connected to a charger. This week it happened again, I have
85% battery charge, and then device went into the same shutdown - boot, cycle and asks to be connected to a charger. And every time this happens
when I first boot the device the battery percentage shown is way less than that of the reported charge just before it shutsdown. And today it happened
again, the device has about 70% charge and it just shutdown, but this time without the shutdown-boot cycle, so knowing of the issue, I attached it
to my usb to charge and booted it, and it shows that it only has 11% charge.
Any idea on why is this? and how to avoid this issue? I have already installed Battery Widget Reborn and DS Battery Saver.
BTW, Im on stock non-rooted 4.2.1
Thanks.
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
Will_T said:
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
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I've not seen that behaviour on my Note 3, but I seen something similar on my Galaxy nexus that turned out to be the micro-USB pin had been slightly bent out of shape, causing the thing to occasionally think it was charging when it wasn't and other weird stuff.
OK - Thanks. That is definitely something different. In my case the phone thought it was at 2% and shut itself off. Then when I powered up the phone, it gave the critical battery warning and said it was at 2%. Then immediately upon plugging in to the charger, it said it was at 56%. I then unplugged the phone and it has been fine since. So the powering off and the 2% warning was in error. Strange. If nobody has seen this behavior before or has any idea why it might do this, I guess I will just think of it as a misfire of some sort and hope it does not happen again.
Will_T said:
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
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it seems to be software bug.
Flash Stock ROM or repair it by kies
:good:
Try cycling the battery. (drain till it won't come on, charge with the phone turned off, turn on at 100%)
I've owned my Note 4 since October 2014 and it's been working solidly since. Last Thursday, out of nowhere, I noticed that from a 14% charge, it suddenly dropped to 4%. I immediately scrambled for a charger and charged it back up to 100%. On Friday, I charged my battery normally again. Charging finished at 11 AM but the drain was abnormally high. My phone was warm to the touch and battery was dead in 4 hours. I was using the phone normally throughout that time, 4g on, location services/bt off, screen off for the most part. I ran OS monitor to see whether any app was locking up the CPU, but, as expected, the main CPU users were Android System and Android OS.
On Saturday, I charged the phone to full again, disconnected around 4 pm. Being that I was home, both wifi and 4g were off. Battery discharged normally, and was only down to 30% on Monday morning.
On Monday, I noticed that battery dropped from 21% straight to 11% straight to 4% in a few seconds. The drain from 4 to 3 to 2% was decent (few minutes of screen on time, on viber), then the phone shut off. I tried to charge the battery with the device powered off, but noticed that the phone simply stopped charging at 80%. I thought that was an abnormality. I tried wiping the system and app caches, but the problem persisted and drain still felt pretty fast. Tuesday night, the phone stopped charging at 91%, staying at the same level for 40 minutes before I gave up and unplugged.
My friend had purchased a fake OEM Note 4 battery and allowed me to try the drain/charge process using his battery to troubleshoot. When I first plugged his battery into my phone, the drain was high at about 1 percent per minute. When I tried to charge the battery, the charge level would not go beyond 90%. I switched on safe mode, but the battery did not charge any further either. I felt by then that something was definitely wrong with my phone. When I restarted the phone to get out of safe mode, though, it suddenly started charging again and hit 100%. With regular use, the fake battery gave me 16 hours of power, which I thought was relatively decent. Alas, when I started charging it again, it stopped charging at 77%. Battery Monitor Widget showed 0 mA flowing into the phone at the time, though the battery indicator in the status bar showed the lightning bolt.
I took out the fake battery and put in my original. It is now charging up normally, but I expect charging to stop before I hit 100%.
If anyone could provide possible explanations for what could be going on and/or other troubleshooting tips to try, I would really appreciate it. A factory reset would be my last recourse.
Thank you very much!
EDIT: My battery went all the way up to 100% this time. But it's the same one that got stuck (at 80% then at 91%) twice in the past.
I'm using two different Samsung chargers and different cords, by the way, and blew out the port with air prior to attempting to charge the fake battery that still stopped at 77%.
I had the same issue, took it to Samsung and they replaced the battery, it has been okay since that
tigsandmitch said:
I had the same issue, took it to Samsung and they replaced the battery, it has been okay since that
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Really? I was ready to write off my battery and just buy a replacement, but what was weird was that even the newish fake battery wouldn't charge fully. That's what made me worried that it's my phone that's the problem.
It'd be great if this could be as simple as a battery problem.
Hey all,
The first time this happened a few days ago I thought it was a fluke, but the problem has now happened twice. Watching youtube with my battery ~7%, the phone froze, and proceeded to reboot itself. Upon turning back on, it showed 6%,. It quickly drained within 5-10 minutes to 0%, and then shut off. Today I was writing a hangouts message with 5% battery left and same thing happens. Phone froze for a few seconds, then force restarted itself. Booted back up and showed 4% battery, then quickly drained to 0% in minutes and turned off. It is weird as the system is turning itself back on, so it realizes the battery isn't actually dead... but the battery is reaching a point where it is low enough to cause the system to meltdown (maybe the OS is throttling itself?)
The first few days I got the phone I also noticed early shutoff, where the phone would actually run out of battery while still displaying 6-8% still remaining. Also frustratingly, when my phone enters "battery saver mode" at 15%, it very often causes my foreground all to refresh itself in RAM, especially if the app has a "dark mode" battery saver option. Not sure if this last bit is normal or not, but it interrupts whatever I am doing.
Any thoughts? The battery life is OK otherwise with 3-4 hours SOT.