Develop Bugs

[Q] How come the phone does not sleep when charging?

I'm still relatively new to the whole android platform. Evo being my first. Why does the evo not sleep when charging? I have the issue of rapid battery drain when I unplug the phone from 100-90 in a matter of minutes. This bugs me to no end. The only way I am able to get around that is to watch for the phone to ding 100 and immediately unplug it and turn it off.
I believe that, and (correct me if im wrong), if your phone is awake, it is being used to its full capacity all of the time. CPU is running and doing whatever it does that drains the battery like it does when its unplugged and being used by the user.
Since the phone doesn't trickle charge it stops charging at 100% until it gets down to ~90% (all the while still reporting that it is at 100%). It stands to reason that if the phone doesnt sleep while its on the charger, its using this cpu power and this is the culprit of the rapid battery drain, and to that end, the culprit of a lot of people's battery woes.
food for thought i guess. that's my take on it.

There are numerous discussions about the charging thing. Search, or at least Google. The most intriguing answer I ever saw to this was that the charging system was set up to protect the Li-Ion battery from degradation by not cramming it full of charge all the time. (The OP on that was a bit more technical, but you get the idea.)
If it bugs you that much, you could root your phone, flash a ROM that is undervolted and compatible with SetCPU, install that, and then set a profile up so your phone is underclocked when it's charging / charged.

I searched xda prior to posting specifically about sleeping while plugged in. My query isn't neccisarily about charging bit rather the sleep function and awake state of the phone while its pretending to charge.
I'm curious as to whether this is hardware related or not. For example when the phone reaches 100% and stops charge could the phone then actually begin to sleep. Unless its physically impossible for the phone to sleep while there is a usb chord plugged into it.
A little test I did with this over the past two days. At night I charged to full and took the phone off the charge and went to bed. I woke up and only lost about 4% all night and was able to use the phone on the way to work never going below 90%
The next night I left the phone on charge all night. Wake up take it off the charger and within 10 minutes I'm down to 92%
Keep in mind I'm not blaming charging on this. The first night lasted longer off of the charger than the night on the charger simply because the phone was allowed to sleep through the night.
I could be wrong

you can set the options it will say 'screen stay on while plugged up' or something to the like
or when you plug it in, just push your lock button (the top power key)

also you can get a brightness widget and put it on your home screen. that way you can still have your screen on while charging but it will be dimmed or whatever setting you set it too.
hope this helps!

Your screen being on vs off while charging does not factor into the asleep vs awake time of the phone.
for an example of this, a freshly rebooted phone on the charger, with the screen off for 5 minutes, will have an "up" time of 5 minutes and an "awake" time of 5 minutes.
this is true while the phone is plugged in and the screen is on or off.
simply put, your awake time on the phone is always going up as long as the phone is plugged in, double this with the fact that the phone stops charging at 100% and you have constant drain even when plugged in.

the phone shuts off at 100% to protect the battery. If you want your phone asleep then turn it off at night. that is the only way to put the phone to sleep try searching app market. Other then that the only other way is to push the power/lock button at the top

Mobile internet fail. Sorry double post

Moto 360 won't go past 92% charging

Hey guys just checking in if anybody has had this issue and a solution. My moto 360 charges up until 92% and then discharges after that point. It never gets to a 100%. I've tried rebooting the device, even resetting it and it's still stuck at 92%. Any help would be appreciated. Thanks!

I may have the same issue as of late. Cant seem to get it past 94%.....

I was having the same problem. I let the moto 360 battery run out completely until the watch turned off, then I let it charge on the dock overnight. It sits at 100% now, but the dock light never goes off.
cycling the battery a couple times might help, it did for me at least.

For me it didn't get past 98% for a good 4 hours within the first few days. So it's all about the charging cycles. Well for me anyways. Mine charges pretty quick to 100% now without much issue. This is with the 4.4w.1 update of course.

I just received mine yesterday, set it up, charged to about 97% last night and turned it off. Woke up this morning and finished the charge before leaving for work so that I was starting with a clean 100%. So far this morning I've been playing with it pretty heavily and showing it off to people at work but did notice that the percentages have been swinging back and forth a few times, like for example, after a period of heavy activity I checked the battery and it was at 94% but in checking a few minutes later it was up to 95%.
This sort of reminds me of when I flash a new AOSP rom on my phone and it takes a day or so for the battery and software to get in sync with each other. The graphs on battery history (still talking about the phone) show percentage going up a little, like the software predicts what it should be but then somehow determines that it has overcompensated and credits you a few percentage points. After a few days this effect goes away on the phone and it appears to settle.

http://forum.xda-developers.com/moto-360/help/moto-360-charging-t2871091
Happened to me maybe 3 times. I dont know what it is. Sometimes restarting works. I even flipped the watch upside down and that worked. one time it stuck at 97% and after it restarted, it showed 100%

RodrigoKim said:
I was having the same problem. I let the moto 360 battery run out completely until the watch turned off, then I let it charge on the dock overnight. It sits at 100% now, but the dock light never goes off.
cycling the battery a couple times might help, it did for me at least.
Click to expand...
Click to collapse
Since the new update the dock light won't turn off.

RodrigoKim said:
I was having the same problem. I let the moto 360 battery run out completely until the watch turned off, then I let it charge on the dock overnight. It sits at 100% now, but the dock light never goes off.
cycling the battery a couple times might help, it did for me at least.
Click to expand...
Click to collapse
Thanks for this. I completely drained my 360 and now it goes to 100%

This is what I posted in other thread:
I can honestly say that I found the issue of the Moto 360 getting stuck while charges, since I bought it almost 3 weeks ago I hadn't been able to get a full charge in my bedroom, I live in Puerto Rico and here is basically Summer all year, average temperatures 80-85 with lower around 65 degrees on Christmas time and highest around 95-100% during July and August, plus 75-90% humidity. Well, with all that said, my bedroom is closed all day, so when I get home it's very hot, as soon as I get there I open windows and all doors but it takes a while to get it cooler. Since I got the Moto 360, I was getting home, changing clothes and putting the watch to charge, it never fully charged, I've tried everything suggested here and other forums, the only place it charged completely was on my Family Room where I have a lot of ventilation and is way colder than my bedroom.
Last Wednesday I got home and just turn the A/C on as soon as I got there, 30 minutes later I put my watch to charge and it charged fully for the first time, so immediately I realized that the only difference this time was that the room was cooler. So I decided to make some tests and I have concluded that every time I put my phone to charge in a cool room it charges completely, but as soon as I try to do it in a warm or hot room it never fully charges, it's obvious that the watch gets warm and hotter while charging so if the environment in which you are charging it it's even hotter it just stops charging, maybe to just protect itself or something.
Those of you with the same issue, just try this and see what happens. Good luck

Hello,
My Moto 360 seems to be stuck at 83 or 84% after a full night on the charger...
It's been the case for the two previous nights, at least.
I've tried restarting the watch, before putting it again on the charger -> No change, still stuck at 84%.
I've then tried resetting it, reinstalling and charging -> No change, still stuck at 84%
After reading posts where people stated that a complete discharge/recharge cycle would let them get back to 100% charge, I tried that as well.
The good news is that it took 28h for my watch's battery to deplete completely, quite significantly more than what I expected.
The bad news is that it charged up to 85%, then down to 83/84% again while seated on the charger.
In a desperate attempt to find something else to try, I put my Moto 360 on another Qi charger, and the battery level climbed up to 92%, which was encouraging... Unfortunately, it stopped there, and didn't go up to 100%, so I don't know what I can make of all this.
As for the theory about the room temperature, it's always been the same here, between 20 and 25°C (70-75°F), so not anything I would call hot.

So I got mine a few days ago and I've noticed when on the charger I get 2 different level of screen brightness. I've also had the problem of only getting 94% some times 97% but what I found that worked was that if I turn the watch off then put it on the charger it turns on and the charging display is really dim and it gets to 100%. If I just put it on the charger the display does not get as dim. The fastest and best charge is with the display off I've been playing with getting this done but haven't found a sure way to get the display off while charging.
Sent from my Nexus 7 using XDA Free mobile app

I think there is something to the temperature idea. When I first got it, the weather was pleasant, never going above the upper 70s, so my living room was also pleasant, and it charged to 100% within an hour with no problems. Since the cursed summer heat, of 85-90 everyday, I can't get it past 98%. Which is not too bad, but I can't help waiting for another cooler day (hopefully before the fall) to see if it can get to 100% quickly again.

I do not have any problems getting my 360 to charge to 100%. What I do when charging is to set the 360 on its charger. Then with my phone I turn on Ambient Screen. When the 360 screen dims I turn off the Ambient screen. This keeps the 360 screen dark for quite a while. Works for me.
Sent from my Moto Droid Turbo 64G using Tapatalk.

[Q] Samsung Tablet Battery Problem.

Good morning.
I own a Samsung Galaxy Note 10.1 2014 edition for about a year now.
I sometimes had a problem with my tablet when charging, once I plugged it a red cross would appear on the battery icon, if I left the cross there the tablet would charge terribly slow, I would solve the problem by disconnecting and connecting until the cross was gone, so the tablet could recharge normally (which he did).
That was until yesterday when I put it to recharge and left it overnight, when i woke up i realized it had only charged 48%!! I left it for some hours more and when I went back to check it was still 48%. I turned it off and let it charge, which got me to 100% but when I took it to school after it reached like 40/50% it went instantly to 15% and then to 4%.
I then, when reached home, tried several chargers (all from samsung) and installed this program to check on the battery (battery monitor widget) and it showed me that the mA flow was unstable, from 90mA to 1400mA (while on my samsung S3 the flow was 999 al the time)
I tried all the chargers on my S3 also and they charged my phone from 13% to 100% in 30 minutes, so I think it is not my chargers fault.
Is battery dead?
I leave here three screenshots showing some battery data.
EDIT: I have bought one cover from ebay, that came from china, it has some magnets on the back, could the magnets be somehow related to my battery problem?

So I've been having the same issue. I do believe there is a connection with the cover. I had removed my cover to inspect the charging port. I couldn't see any damage so I turned on the tablet with the cover still off and plugged in the charger and it worked just fine. Now every time I have to charge I just pull it out of the case, pop the button lip around the port off and then back on back and like magic, it works normally for a period of time.
Sent from my SM-G900P using XDA Free mobile app

Moto360 won't charge or boot, charger indicator on for only 10s

Hello guys, I put my watch on the charger last night before sleep, but found the watch not charged at all and automatically turned off when I woke up this morning. So I put it on my charger again, and a battery icon showed up on the screen with the white LED indicator on the charger on for about only 10s. Then everything went off. Tried holding the power button for 30s but nothing happened. I am frustrated and feel like the watch is totally dead, giving no response at all. Do you guys have any suggestion on this?
---Update---
The Moto360 finally turned on after I left it on the charger for an entire morning. Seems like it took some hours to charge for the initial 10% battery to boot the watch, and it starts to charge like normal afterwards. Still, it is unsettling that it may take hours to bring the battery back to life every time the watch is out of battery...

Wireless charging stops at 100% and wont restart

HI can anyone tell me if there is any way to resolve this. I think is has started since doing the upgrade to Android 10 earlier this week.
I normally put my phone onto the wireless charger before going to bed and I have noticed recently that when I grab it in the morning the battery percentage is sitting around the 90% mark. I initially thought the charger was not able to charge to 100% but on further examination I see that it indeed charged to 100% after I placed it on the charger and then the charging stopped and the phone ran on battery until I removed it in the morning.
I confirmed this this morning by replacing it on the charger and watching it charge (like watching paint dry ). The charger light was blue while charging, when the phone hit 100% the charger light turned to green but after about 30s it completely switched off and so too did the indication on the lock screen that a charger is connected. Removing and reseating the phone started charging again.
It definitely looks to be software related as I did not have this problem last week. I just wanted to ask if anyone here has noticed this and knows of any workaround?
For the record I am running fast wireless charging with the samsung wireless charger that came with my wifes S8, that charger works perfectly with my older Note8. I have also tried switching to normal wireless charging speed with no success.

atunguyd said:
HI can anyone tell me if there is any way to resolve this. I think is has started since doing the upgrade to Android 10 earlier this week.
I normally put my phone onto the wireless charger before going to bed and I have noticed recently that when I grab it in the morning the battery percentage is sitting around the 90% mark. I initially thought the charger was not able to charge to 100% but on further examination I see that it indeed charged to 100% after I placed it on the charger and then the charging stopped and the phone ran on battery until I removed it in the morning.
I confirmed this this morning by replacing it on the charger and watching it charge (like watching paint dry ). The charger light was blue while charging, when the phone hit 100% the charger light turned to green but after about 30s it completely switched off and so too did the indication on the lock screen that a charger is connected. Removing and reseating the phone started charging again.
It definitely looks to be software related as I did not have this problem last week. I just wanted to ask if anyone here has noticed this and knows of any workaround?
For the record I am running fast wireless charging with the samsung wireless charger that came with my wifes S8, that charger works perfectly with my older Note8. I have also tried switching to normal wireless charging speed with no success.
Click to expand...
Click to collapse
Unplug the charger from its power source and plug it in again, causing it to 'reboot'. Let us know the results. Note, there is an option to set the wireless charging to NOT be fast during certain hours of the day. I set mine so it charges slowly while I am sleeping - to put less stress on the battery. Your charger may be a little old as well if you got it with a note 8 or S8 - ?
Sent from my SM-N976V using Tapatalk

IMO this is a good feature to stop the wireless charger cooking your battery.
Maybe turn down your AOD brightness or something, to use 10% within a couple of hours of being idle is pretty high. Maybe turning off fast wireless charging would extend the charge time so it finishes nearer to when you wake up could help too.

Thanks for the feedback however it does sound like workarounds for an issue that should not be present (apart from rebooting the charger which I will try when I get home).
For me wireless charging should act just like wired charging in that when it reaches 100% the phone should essentially run off the charger now and not use battery at all. Every other phone with wireless charging that I have had worked that way, this is just plain stupid.
Willhemmens its not a couple hours, looking at the battery graph if I go to bed at 10pm and put the phone on the charger it pretty much hits 100% around 11:30 and then is at 90% at 7am, so it is 10% over 7 hours which is ok in my books, but reality is that during this time the phone has another source of power that it can and should use. It did before I applied the Android 10 update.

I have had this issue every now and again, and I found that rebooting it takes care of the issue.

An update. This morning I tried my wife's wireless charger and when the phone reaches 100% it continues to show the charge icon. Put my wife's note 8 into the wireless charger and it exhibited my problem.
So it looks like this is a problem with the wireless charger and not the phone.
Thanks for the answers guys I am of to try buy a new wireless charger
edit - New charger solved the problem.