Database Develop

[Q] Battery discharging when on powered USB

Here's an interesting discovery - would be interested to know if anyone else has the same issue.
Basically, my old WM6.5 phone (Touch Pro) used to take charge from a powered USB socket, even when the computer was turned off.
Plugging the HD7 into the same USB socket, and the phone won't charge. That's fine, I can understand there may be valid reasons for it.
What's *really* interesting is that if I leave the phone plugged into this powered down PC overnight, the battery is pretty much dead in the morning. Compare this to leaving the phone unplugged completely, and I'd generally see 15% battery usage overnight.
The solution is pretty simple - don't leave the phone plugged into this USB socket, but it seems odd.
Any chance someone else can try this?

Is the Zune client on your pc open because my phone will not charge with zune open
but once i exit out of zune on the pc it charges fine...
ive lost my charger and too lazy and cheap to buy a new one so im just using the pc to do it....

no - the PC is actually powered down. However, with soft power switches, the USB port stilll can get power, as proven by my ability to charge my Touch Pro from USB when the PC's off.

I'm not sure what could be causing this, but i will try to see if mine is the same too, then i will post feedback

I've charged mine on a USB port at work, but there isn't any Zune software in the way there... Honestly, I don't sync through USB, so I never noticed this, but at work I have used the USB port on our camera system to charge my phone...

most likely cause is the fact that the computer reduces the amount of current send to the usb port when powered down.
normaly all that is needed is a move of the mouse or a key press to power the computer back on.
now both the keyboard and mouse are low power devices.
now my guess is that the touch pro needs less power in standby then the hd7, and therefore the first will charge and the second will drain.
so to solve this question you need to measure the power comming from the computer in standby (powered on it's 500mA), and both the phones in standby mode.
plopper

Here's what I find odd:
The phone will not charge unless powered on. For example, if I have the phone turned off, and plug it into the wall charger it came with, the phone boots up. It will NOT charge while turned off.
Anyone else notice this?

jimbonics said:
Here's what I find odd:
The phone will not charge unless powered on. For example, if I have the phone turned off, and plug it into the wall charger it came with, the phone boots up. It will NOT charge while turned off.
Anyone else notice this?
Click to expand...
Click to collapse
i saw someone mention that the led won't turn on during charging while the phone is turned off.
sadly he didn't wait long enough to see if the led turns on when the battery is fully charged.
also i have no idea which model he was using.
plopper

I posted earlier about charging issues on the HD7: http://forum.xda-developers.com/showthread.php?t=849548
What I found was that if you have the HD7 plugged into the USB port and then you suspend/shut down the PC, it'll stop charging (while all other phones I've used - iPhones, HD2, etc. - will keep charging).
Once you suspend/shut down, you need to then unplug and replug the HD7, and it should start charging again. Not sure why this happens, but I need to do it every night, otherwise I have a dead phone in the morning.

jimbonics said:
Here's what I find odd:
The phone will not charge unless powered on. For example, if I have the phone turned off, and plug it into the wall charger it came with, the phone boots up. It will NOT charge while turned off.
Anyone else notice this?
Click to expand...
Click to collapse
That is apparently a "feature" of WP7-- the phone will automatically turn on when plugged in.

New BL + powered off USB charging = windows BSOD?

So two key events happened with my phone - the replacement battery I ordered finally arrived, and I also crawled out from under a rock and flashed the ICS partition and pengus77's CM10.
I was advised to calibrate the replacement battery by charging it from 0 to 100 with the phone powered off. So I streamed a random high res youtube video to drain the battery as fast as possible, then powered off the phone and plugged it into a USB port on my work laptop (a HP Elitebook running Windows 7 Enterprise x64).
The phone started charging (battery animation screen appeared) - and then my laptop started to install drivers. A few minutes later, I got a windows BSOD - yes the blue screen of death, not the black screen on android.
I initially thought something else caused the BSOD, so I left the phone plugged into my laptop and rebooted. As soon as my laptop got past the "starting windows" screen, it BSODed again. Didn't even get to the "Please wait..." screen.
Tried to reboot again - BSOD before getting to the "Please wait..." screen. Finally I suspected my phone was the culprit, so I unplugged it. Another reboot - it successfully got to the "Please wait..." screen, and then I plugged in the phone (still off), triggering a BSOD in under 10 seconds, before I could even get the field to input my password.
Rebooted with the phone plugged in but powered on this time, and my laptop fully booted all the way, no BSODs. But if I powered off the phone and plugged it in, BSOD! Looks like I'll have to wait till I get home to my AC charger before I can calibrate this battery
This is quite strange - I never had any problems like this on the old GB partition, if I were to plug in my phone to the laptop with the phone powered off.
Has anyone else experienced such an issue before? If it helps, my work laptop is a corporate machine so I don't have admin access over many of its functions (though I can still install and uninstall programs like normal), and it's loaded to the brim with corporate bloatware, and it's possible these properties contributed to the BSOD.

Charging(forming) new battery via usb is never recommended to be honest
Most usb device don't provide enough power or stable voltages like charger designed for our phone
I personally never liked charging via usb(most usb hub's dont work properly also if they need to provide current to hungry device(our phone example)..
I have no prob's with that options and also using custom battery 1700mah...
I have no sod's on win but have read that people had problems and sods sometimes with usb charging...
It's hard to pinpoint exactly where problem lies,could be your low power usb on motherboard crashing your win or something else..

Hmm that sounds likely. I'm back home anyways and will use my AC charger to condition the battery.
I remember that on the old CM10 nightlies (before the call bug was fixed), the USB charger always BSODed my phone...

... an easy solution would be to start using a real operating system on your computer instead of windows

pengus77 said:
... an easy solution would be to start using a real operating system on your computer instead of windows
Click to expand...
Click to collapse
Believe me, I do - I use Linux as my main OS on my home computer, and only boot into Windows for games
However this is a corporate laptop that doesn't actually belong to me and I can't meddle with it like that.

[Q] One more charging problem with Nexus 7?

Hello! After some experiments with POGO contacts on my Nexus 7 3G I have the following situation:
1. The normal USB-charging can not properly start. The battery state in the Settings menu eventually changes from Charging to Discharging and back, the battery level goes down as it is indeed discharging. If the tab is off, then the charging animation is not shown completely in an infinite loop.
2. No any connection can be established with a computer using USB cable. Windows 7 machines just ignore this connection without any traces. Windows XP machines repeatedly show warnings about a non-recognized usb device although all drivers were preinstalled.
3. If I put a USB-OTG cable into the tab (even if the cable is empty from other side) android shows that the battery is charging. Neththertheless, the tab in this state correctly recognizes flash drives as it did previously.
4. The POGO charging contacts are alive. The charging is normal. Moreover, this charging alllows to normally connect the tab to computer via USB cable.
I used the last feature to return to the stock ROM and to lock the bootloader, so the device is ready to go to service. But are there some chance to fix the problem by my own?
Thank you!

potzil said:
Hello! After some experiments with POGO contacts on my Nexus 7 3G I have the following situation:
1. The normal USB-charging can not properly start.
Click to expand...
Click to collapse
You'll have to say what you broke.. Did you hook the pins up wrong?

Yes,
khaytsus said:
You'll have to say what you broke.. Did you hook the pins up wrong?
Click to expand...
Click to collapse
It seems, yes, but it is very easy way to break:laugh:

No excuses for breaking it, I did not hook it up the wrong way for my GNex................
Beamed from my Maguro.

[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] HTC Desire 500 won't charge

Hi there HTC fans.,
I'm having a problem with my HTC Desire 500, and I really need your help because I can't really figure out the cause of it. Basically, my phone just doesn't want to charge anymore.
The problem first started at work. I had to download some photos from my phone into the PC from work, and I did that using a data cable from one of my colleagues. At first, the phone didn't connect to the PC, but after I unplugged it and connect it back, it worked and I was able to copy the photos I needed. However, a notification message appeared on my HTC's screen. The message was "Your phone is in USB Host Mode" or something like that. I'm having this Desire 500 for about 6 months and this message never appeared before when I copied things from or into my phone. I ignored that message and I unplugged the data cable and carried on my work.
When I went home, I tried to charge my phone but that didn't worked. I tried the both ways available: directly with AC charger and connected to my PC. But nothing happened; no charging signal, no red LED on. Nothing. I tried to go into fastboot, and even made a factory reset, but still the phone didn't charge.
However, I noticed today that somehow (by a miracle) the phone started charging when I used the same data cable that I downloaded those photos at work.
In conclusion, my HTC Desire 500 can't charge unless I use that specific data cable (from one of my colleagues).
So my question is: why is this happening and how I can solve my problem?
Thanks in advance for all of your answers and sorry for my bad english.

Maybe USB port is damaged? Check if there isn't anything suspicious inside your phone USB or the cable plug

IgiK said:
Maybe USB port is damaged? Check if there isn't anything suspicious inside your phone USB or the cable plug
Click to expand...
Click to collapse
Thanks for your answer, lgiK.
1) regarding the phone's USB - I don't think it's a problem with the phone's USB jack, because the phone actually charged with the data cable from the colleague that I've told you about. He also has a microUSB cable (like all the other Android devices).
2) regarding the cable plug - I don't think the problem is with the cable plug, because I've tried to charge the phone at home with 3 different AC chargers (all from other Android based devices), but it still won't charge.
I really don't think that it's a hardware problem, I suspect that it's more a software bug (or something similar). I think that mainly because that message appeared for the first time ("Your phone is in USB Host Mode"), although I'm having this phone for nearly 6 months.
Did anyone had the same problem like I do?

If you switch off your phone charge it?

ufonek said:
If you switch off your phone charge it?
Click to expand...
Click to collapse
Thanks for the answer, ufonek
Last night my phone completely ran out of battery and has turned off. I put it to charge on a normal AC charger, and I noticed this morning that his battery was full.
So... yes, I suppose the phone charges when it's turned off.

le.pra said:
Thanks for the answer, ufonek
Last night my phone completely ran out of battery and has turned off. I put it to charge on a normal AC charger, and I noticed this morning that his battery was full.
So... yes, I suppose the phone charges when it's turned off.
Click to expand...
Click to collapse
Then try factory reset. Maybe there is something wrong in the software of the phone. Switching modes USB is a software issue. In the USB host mode, the phone is not charging.

ufonek said:
Then try factory reset. Maybe there is something wrong in the software of the phone. Switching modes USB is a software issue. In the USB host mode, the phone is not charging.
Click to expand...
Click to collapse
I've already did that, but no change occured. I also tried going into fastboot (that also didn't helped). So i'm running out of options. The phone is still in guarantee, so I'm thinking I will just take the phone to them.

le.pra said:
I've already did that, but no change occured. I also tried going into fastboot (that also didn't helped). So i'm running out of options. The phone is still in guarantee, so I'm thinking I will just take the phone to them.
Click to expand...
Click to collapse
Maybe this help:
Guys,
I had the same "in USB host mode, can not charge" problem when the power is on, after 3 months of use of my new HTC One. It may be related to the charger but I am not 100% sure. It was very annoying and I had to turn the phone off before plugging in the power cable to charge. It happened when I was in Taiwan, so, I called the HTC help line there and they gave me a solution.
The guy on the other end asked me to go to Power setting and click off the "Fast Boot" and "Power Saver Mode" options first. ( I am not sure if these steps are necessary, but, anyway I did as he requested.) Then, power off the phone by pushing down "Power Off" for 2-3 seconds to allow restarting in Safe Mode. Once the phone restarts in Safe Mode, some of the Apps may not work but the phone can be charged normally. After restarting my phone in it's normal mode, the "USB Host Mode, Can't Charge phone" problem was gone. I can charge your phone normally and also click back on the "Power Saver Mode" and "Fast Boot" options in Power Setting, without problems. I hope this will also work for your phone.

ufonek said:
Maybe this help:
Guys,
I had the same "in USB host mode, can not charge" problem when the power is on, after 3 months of use of my new HTC One. It may be related to the charger but I am not 100% sure. It was very annoying and I had to turn the phone off before plugging in the power cable to charge. It happened when I was in Taiwan, so, I called the HTC help line there and they gave me a solution.
The guy on the other end asked me to go to Power setting and click off the "Fast Boot" and "Power Saver Mode" options first. ( I am not sure if these steps are necessary, but, anyway I did as he requested.) Then, power off the phone by pushing down "Power Off" for 2-3 seconds to allow restarting in Safe Mode. Once the phone restarts in Safe Mode, some of the Apps may not work but the phone can be charged normally. After restarting my phone in it's normal mode, the "USB Host Mode, Can't Charge phone" problem was gone. I can charge your phone normally and also click back on the "Power Saver Mode" and "Fast Boot" options in Power Setting, without problems. I hope this will also work for your phone.
Click to expand...
Click to collapse
Thanks for your advice. I will try this solution when I'll go home.
Have a great day.

le.pra said:
Thanks for your advice. I will try this solution when I'll go home.
Have a great day.
Click to expand...
Click to collapse
I tried to restart my phone in Safe Mode, but the phone still won't charge. Any other ideas?

le.pra said:
I tried to restart my phone in Safe Mode, but the phone still won't charge. Any other ideas?
Click to expand...
Click to collapse
Check the usb connector. And then just send in for repair.