Develop Bugs

[Q] USB/Battery Charging Bug

Alright XDA, checking if anyone else has got this issue?
Bought the galaxy nexus almost three weeks ago, everything was fine with the phone until last week thursday. My battery was running low so I decide to charge it, only to find that it wasn't charging. I took out the battery and put it back in, still wouldn't charge (or at least it didn't say it was charging). I left it in the charging plug whilst the phone was turned off, hit the power button and the black charging screen comes up. I turn it back on to see that the battery is at 44%, after being at 12% 5 minutes ago.
Anyway, ever since then the phone hasn't been charging right. I plug it into the charger, and it doesn't recognize that its charging, or maybe it actually isn't? It takes a while for it to recognize that it's plugged in, and takes a while to actually start charging. I unplug the phone after it's finished charging and is at 99%, only for the battery icon to display that it is still charging.... it's constantly changing from charging to not charging even though I'm not doing anything.
I got the battery indicator app and that would display that the battery has been discharging since say 1 o clock in the afternoon, yet I took it off the charger at 9 o clock in the morning,
Furthermore, I'm now trying to charge it through my computer and put some music on my phone, but my computer won't even recognize that anything is plugged in even though it is quite clearly charging through the computer. (have had to plug it in and out several times, and sometimes it'll recognize that its there...)
is the USB plug ****ed? should I just send it back? I would go to my provider to get a new one from them as I still have warranty and thing, but they will only accept returns within the first 7 days of purchase. Otherwise that leaves me with sending it to samsung which is my last resort because they'll probably take their sweet time getting the phone back to me and I'm going to leave the UK for 4 weeks next week and I really want to take my nexus with me instead of risking it not coming back before I leave.

Have you tried a different USB cable?

New2Houston said:
Have you tried a different USB cable?
Click to expand...
Click to collapse
Yes, I've tried the original charger, a blackberry charger, USB cable from original charger through computer, and another micro-usb cable. All have the same problem with recognizing that its plugged in/charging... And now funnily enough it's unplugged from my computer but it's still saying it's connected as a media device.

Don't power up or turn off samsung devices with the USB connected. It messes up the battery stats. I've had the same thing happen to me before on the Nexus S. Since then I learned not to do that on my phones.
I don't know anything about your other charging issues though.
edit: you could always try a factory reset (which will wipe the whole device) to make sure it is not software related.

Luxferro said:
Don't power up or turn off samsung devices with the USB connected. It messes up the battery stats. I've had the same thing happen to me before on the Nexus S. Since then I learned not to do that on my phones.
I don't know anything about your other charging issues though.
edit: you could always try a factory reset (which will wipe the whole device) to make sure it is not software related.
Click to expand...
Click to collapse
Interesting about the Nexus S, trying to track back if I unplugged or powered up the phone with USB in...
I just tried factory reset - still showing up that the battery is charging even though it isn't plugged in

Hi, I have the same problem since the 7th of December, first i thought an app or some sync was eating up the battery (i updated G+ and facebook the previous day) but then I noticed that it was not charging, now my GN is dead. I manage to turn in on when is on the charger a couple of times but now not even that. (I have used several chargers and usb cables with no luck)

Did you manage to solve the issue? I sent mine today to Samsung after trying to get a replacement from Phones 4 u.

Possibly chip in battery is bad? Havent confirmed but supposedly we have fuel gauge chips.
Sent from my Galaxy Nexus using xda premium

Has anyone else experienced this and fixed it?
Started happening to me three days ago and I can't fix it at all.
Sent from my Galaxy Nexus using XDA App

Iv had this problem twice now.....
it wouldnt charge past 12%, it would not show the charging symbol.... i shut off the phone (it seems to charge while the phone is off).. after 5 minutes, i turned it on and the phone was at 65%?
I tried to tell the guy at the verizon store and he would not do anything about it unless he could see the problem happen.... this doesnt always happen and its annoying as hell...
im thinking it is a software issue since it charges fine while the phone is off...

Luxferro said:
Don't power up or turn off samsung devices with the USB connected. It messes up the battery stats. I've had the same thing happen to me before on the Nexus S. Since then I learned not to do that on my phones.
Click to expand...
Click to collapse
I was looking for a cause/solution as to why my battery life reporting seems so erratic, I will definitely take this advice and see if this might be why. So it should be ok if I only connect and pull the charger with the phone already on? What if I plug the charger in with the phone completely off and then pull it before booting, is that alright too?
It's funny all the new rituals you need to learn to get around the quirks of a new device (like having to turn the screen off and then back on again after docking my Nexus One if I wanted the touchscreen to work right haha).

I've been having strange issues with my Galaxy Nexus and charging for the past few weeks - I can't seem to get it to charge over 50-60%. Also, whilst it's 'charging', the 'Battery' details page reports 'Discharging' or 'Not charging', even though there is a charging icon in the status bar?
I left it to charge for around 9-10 hours last night, off the mains charger, and it only got to ~45%...
...as I mentioned, whilst it is charging, it never reports that it's charging. The lock screen also suggests to 'Connect your charger'...
...charging whilst the handset is off still results in a half charge. I've tried many different chargers/cables with no luck.
Strangely, I used to be able to only charge the handset off of USB, to 100%, but I've now lost that 'work around' :-(.
I guess I'll phone Samsung returns and see what they say. I'll post their response, in-case anyone else hits this issue.
---------- Post added at 10:50 AM ---------- Previous post was at 10:12 AM ----------
Looks like they're sending me a jiffy bag to return it to them...

hmmmm, sounds broken

Mine is charging OK.
My biggest problem is that even when I have my charger unplugged, the icon is still showing that it's charging.
Look at the screenshots, the battery level is going down the whole time because I'm not charging it but it's showing a bar for charging at the bottom.
And if you look at the time on the clock, a few minutes go by and it still says 38 seconds on battery.
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The gap in the stats is from a battery pull.
Sent from my Galaxy Nexus using XDA App

Did you ever find a solution for this problem? I'm experiencing the same problem and am unsure whether to try and return the phone or send it in to samsung.

Nope
Have to back my phone up in the next few days and send it back for repair/replacement.
It takes ten days, but if you haven't sent it back by then, I'll let you know what they say the problem was.
Sent from my Galaxy Nexus using XDA App

Many have reported the same problem. See http://forum.xda-developers.com/showthread.php?t=1427539

ray2jerry said:
What if I plug the charger in with the phone completely off and then pull it before booting, is that alright too?
Click to expand...
Click to collapse
That's what I do most often, it works fine for me (but I've had no battery problems so far).

Did any one found a solution for this problem?

http://code.google.com/p/android/issues/detail?id=23789
If anyone experiencing this hasn't "starred" the issue on Google, please do so at the link above.

GN just died. Could static from pocket caused a short?

UPDATE:
Turns out my phone is not completely dead.
If I plug it into the computer, it registers a sound indicating a USB is connected,
but not more than 2 seconds later, it sounds again (the sounds of a USB error, Ba, dum, dum)
When I look at device manager, I see: Omap4440 quickly, but then it goes away. This recycles about 8 times and then it just stops.
I read that this might be due to the phone constantly rebooting.
The screen never turns on. I can't get into the bootloader since the screen is dead.
The only problem now is how can I go about this?
-----------------------
I had more than 90% battery because I just unplugged it. I did a reboot to clear any background apps (like restarting a computer, right?) and it just never came back on.
I placed it into my pocket for that minute while it was rebooting but I never watched as the screen went off. When I took it out of my pocket, it was a dead screen.
I already tried volume + power. And/also holding power itself for a while.
Plugging it back into the charger doesn't do a thing. No charge. Screen remains dead. No vibration is present to indicate the phone at least came on.
What is going on here?
My only conclusion is my jacket may have created a static field which caused a short when I pulled it out. Could this be possible? Especially since there are 3 contact points for the dock on the sides?
Using a GSM version if that matters.

lemonspeakers said:
I had more than 90% battery because I just unplugged it. I did a reboot to clear any background apps (like restarting a computer, right?) and it just never came back on.
I placed it into my pocket for that minute while it was rebooting but I never watched as the screen went off. When I took it out of my pocket, it was a dead screen.
I already tried volume + power. And/also holding power itself for a while.
Plugging it back into the charger doesn't do a thing. No charge. Screen remains dead. No vibration is present to indicate the phone at least came on.
What is going on here?
My only conclusion is my jacket may have created a static field which caused a short when I pulled it out. Could this be possible? Especially since there are 3 contact points for the dock on the sides?
Using a GSM version if that matters.
Click to expand...
Click to collapse
try pulling the battery out for 3+minutes, then put it back in and try booting.

Sorry that happened to ya. I would plug it in and keep it plugged in for a solid hour, then try booting it up. I had that happen to me on a previous Android....HTC EVO. I was rooted and just died (even though it said it had plenty of battery). For some reason it lied and was actually out of juice bigtime.
Rooted custom ROMS have known bugs, albeit extremely minute bugs. Give it a try and report back.

Happens every now an then with most galaxy nexus users, battery pull always fixes it, no need to wait 3 minutes, out an straight back in works for me then hit power on button an you will get the vibe an boot.
Sent from my Galaxy Nexus using xda premium

slayr76 said:
Happens every now an then with most galaxy nexus users, battery pull always fixes it, no need to wait 3 minutes, out an straight back in works for me then hit power on button an you will get the vibe an boot.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
yeah, i know what you mean because it has happened to me before plenty of times. But this, it's different. It's practically dead and all methods i've tried has not seem to work. I'm seriously out of ideas.

So it's been charging over night and the phone is still dead and wont turn on.
I've even replaced it with a spare battery which I know is at least 90% full.
Anyone? I'm so sad why my nexus just died like that.

rebump... =-( I am so that it just died with no reasons as to why... I've had zero problems with it!

You could attempt an OMAPFlash on it, then reload the factory image via fastboot.
That works for me about 90% of the time in GNex repair situations such as this.
Good luck.

Any water indicators showing water damage? If not, start contacting your provider / insurance / Samsung about a replacement.

Replacement man!
Sent from my Galaxy Nexus using Tapatalk 2

simms22 said:
try pulling the battery out for 3+minutes, then put it back in and try booting.
Click to expand...
Click to collapse
Simms is that you from the nexus s? If so, can't wait to see you uploading a quadrant shot of your next over clocked phone.
Op, plug it to a computer and check what happens. Otherwise call for a replacement.

Does this mean I will get a refurbish model? Can anyone quickly explain to me the process to get a new GN and the time it took for you to get your replacement?

If the power button itself is at fault, you can send a power on signal by plugging in the phone with no battery installed and then with the wire still plugged in insert the battery. This method requires no button input whatso ever
Edit , i used to do this by accident all the time while flashing htc devices. Not sure if samsungs hardware offers the same troubleshooting functionality and im not at a wire right now to test the theory. But its worth a shot.
Sent from my Galaxy Nexus using Tapatalk 2

I had something with these symptoms about 4 days into owning my phone.
The way I fixed it was booting into ODIN mode (vol down & power). The only way out of that one is also a battery pull.
Sorry: I meant to say: battery pull, ODIN, battery pull, then it turned on again normally.

android01 said:
If the power button itself is at fault, you can send a power on signal by plugging in the phone with no battery installed and then with the wire still plugged in insert the battery. This method requires no button input whatso ever
Click to expand...
Click to collapse
Already tried it. Does not work.
m.is.for.michael said:
I had something with these symptoms about 4 days into owning my phone.
The way I fixed it was booting into ODIN mode (vol down & power). The only way out of that one is also a battery pull.
Sorry: I meant to say: battery pull, ODIN, battery pull, then it turned on again normally.
Click to expand...
Click to collapse
I'll give this one a try. But I never thought a combination like that would revive a dead phone. I mean, it's dead as if it was just a children's toy with no electronic board inside. No power even though all 3 battery I tried have at least 90% charge. MY Charger is not defective as it works with my other phones.
Naezor said:
You could attempt an OMAPFlash on it, then reload the factory image via fastboot.
That works for me about 90% of the time in GNex repair situations such as this.
Good luck.
Click to expand...
Click to collapse
Won't work since I can't even turn on the phone. Computer doesn't see it (Obviously because it can't power on).
krze said:
Any water indicators showing water damage? If not, start contacting your provider / insurance / Samsung about a replacement.
Click to expand...
Click to collapse
Indicators show no water damage. This was in my pocket. Unless I pee'ed in my jacket, it shouldn't be wet there.
Thanks for the help guys, but I'm running out of ideas. There's only so much you can do with a phone that cannot turn on. =(

Turns out my phone is not completely dead.
If I plug it into the computer, it registers a sound indicating a USB is connected,
but not more than 2 seconds later, it sounds again (the sounds of a USB error, Ba, dum, dum)
When I look at device manager, I see: Omap4440 quickly, but then it goes away.
I read that this might be due to the phone constantly rebooting.
The screen never turns on. I can't get into the bootloader since the screen is dead.
The only problem now is how can I go about this?

Basically, what you're seeing means the phone is still alive, but the firmware is corrupted.
Try this thread, and particularly this post.
No idea if it works or not.
http://forum.xda-developers.com/showpost.php?p=25849293&postcount=20

m.is.for.michael said:
Basically, what you're seeing means the phone is still alive, but the firmware is corrupted.
Try this thread, and particularly this post.
No idea if it works or not.
http://forum.xda-developers.com/showpost.php?p=25849293&postcount=20
Click to expand...
Click to collapse
I just tried it. I used the program. I'm stuck on this part for 20 minutes every time after 5 different attempts.
Any clue?
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Is this a hard brick or a soft brick?

This sounds like hardware failure to me. Drop the phone at all, ever? If not, could just be faulty hardware.
Honestly the Galaxy Nexus seems to be of poorer build quality (internals, screen, back cover, etc) than every other Android phone I've ever had. Not that I don't love my Nexus, just an observation.
Sent from my Galaxy Nexus using xda premium

[Q] P930 wont charge even after replacement port

I have an LG Nitro and for some reason it stopped charging. The notification icon shows it as charging but the battery continues to go down. I tried buying another battery as I thought maybe the battery was going out but this was not the issue. So next, I ordered a charging port and attached (soldered) it to the device, this also did not resolve the issue. I am kind of at a loss at what to do as the phone is in perfect condition but will not take a charge. The Nitro is rooted with TWRP recovery and CM 10.1 installed on the device.
I now have a Nexus 4 but was planning on giving the Nitro to my cousin but then this started happening right before my Nexus arrived.
Does anyone have any idea what is going on? All of the symptoms point to either a bad battery or charging port but this is obviously not the case.
Thanks

Also, if I plug the device in and hit the key, it shows the battery icon going up and down but it does not charge.

Come on, I know one of you has an idea as to what is happening

A few thoughts...
1. Are you using the official LG AC Adapter? If not, are you using an AC Adapter that's outputting AT LEAST 500mA? For me, in the car using GPS, even with a car adapter that outputs 1.0A, it can't keep up with charging the battery. It shows that it's charging, but the capacity continues to go down...
2. Are you using any kind of CPU under/over clocker? Like SetCPU? Check the settings and make sure you're not using some crazy profile, or better yet just uninstall it and test to see if things get better.
3. How about the USB Cable? Have you tried other cables to make sure you're not using a bad cable?
4. Double-check your solder work. Are you're connections clean, no globs or solder points covering more than a single pin? Connections are solid, nothing loose or gaps?
Good luck!

Namuna said:
A few thoughts...
1. Are you using the official LG AC Adapter? If not, are you using an AC Adapter that's outputting AT LEAST 500mA? For me, in the car using GPS, even with a car adapter that outputs 1.0A, it can't keep up with charging the battery. It shows that it's charging, but the capacity continues to go down...
2. Are you using any kind of CPU under/over clocker? Like SetCPU? Check the settings and make sure you're not using some crazy profile, or better yet just uninstall it and test to see if things get better.
3. How about the USB Cable? Have you tried other cables to make sure you're not using a bad cable?
4. Double-check your solder work. Are you're connections clean, no globs or solder points covering more than a single pin? Connections are solid, nothing loose or gaps?
Good luck!
Click to expand...
Click to collapse
Thanks for your suggestions. I will look into your idea.
Thanks

I do not think I have the charger that came with the p930 as it got stolen but I do have the charger from my Nexus 4. Do you think it will work? The N4 charger has 1200 milliamp output or should I order an OEM charger.

I think I used the charger from my HP Touchpad which is 2000mA but it didnt work. I may be mistaken.....
I will look into getting an OEM charger.

Might be charging...
Ok I made some progress finally!! I have a 700mA charger plugged in and now the LG logo comes on and then blinks off. :good:
Hopefully the battery is charging and by morning it will be working.
Wish me luck!!! :highfive:

Still blinking on and off. Any ideas?

comhack said:
Still blinking on and off. Any ideas?
Click to expand...
Click to collapse
I can get into download mode and would be able to get in to the twrp but I do not have a backup and my sdcard got corrupted.
What are my options now?
Thanks

The 1.2A from the Nexus4 is great. That should do nicely.
1. Are you ABSOLUTELY sure this adapter from the Nexus4 is working properly (have you verified that it's working fine with your Nexus4)? If so, then plug it into the Nitro.
2. If the Nitro is powered off, then when you first connect a power source, you should see the 'LG' logo come on for a second then go back off. After a minute you can short-press the power button and you 'should' see an animated battery icon that looks like it's filling up. The battery charging icon looks like this (lower quality image on the phone):
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3. Let the phone charge for an hour. Now, press and hold the power button until you see the 'LG' logo, let go of the power button. The phone 'should' start powering on.
When you say 'Still blinking on and off', what is? If it's the soft-touch buttons on the bottom, that's an indicator that the battery is low...So, indeed the issue continues.

Namuna said:
The 1.2A from the Nexus4 is great. That should do nicely.
When you say 'Still blinking on and off', what is? If it's the soft-touch buttons on the bottom, that's an indicator that the battery is low...So, indeed the issue continues.
Click to expand...
Click to collapse
I mean the phone turns on, I see the LG logo and then it turns off. Then it turns back on and I see the LG logo and it turns off again. Make sense ?
I can get into Download mode just fine and would be able to get into TWRP but my sdcard crapped out.

I know about charging the device with the phone off (seeing the charging dialog) but the phone keeps turning off and back on blinking the LG logo.

If I still had TWRP on my sdcard, I could of went to the Factory Reset screen and went into TWRP and let it charge from there and then wipe it and install cm 10.1 again.
Is there anyway to load the recovery.img to the sdcard without being able to boot the phone? I am pretty sure I cannot use adb in Download mode so I am kind of stuck and I do not want to flash to stock if I can help it but I will if I have to.

I think its a hardware problem and your phone need to be repaired
I had a sony ericson p990 and had the same problem you said
The repairman told me he has exchanged some of transistors
Sent from my LG-P930 using Tapatalk 2

I tend to agree with nss007, the constant fluctuation of the power/charging going on and off is a big red flag to hardware issues.

nss007 said:
I think its a hardware problem and your phone need to be repaired
I had a sony ericson p990 and had the same problem you said
The repairman told me he has exchanged some of transistors
Sent from my LG-P930 using Tapatalk 2
Click to expand...
Click to collapse
Well I actually took it to a cellphone repair company (only one in the area) and they had it for about a week and could not get it to charge. They also changed out the charging port and looked the board over. Of course, they were obviously not using the right charger as they could not even get the LG logo to come up. I am hoping that it is a software issue as the company could not find a single thing wrong with the phone or board. Of course, they mainly fix hardware (broken screens, charging ports, etc.) so I dunno how much experience they have with software.

comhack said:
Well I actually took it to a cellphone repair company (only one in the area) and they had it for about a week and could not get it to charge. They also changed out the charging port and looked the board over. Of course, they were obviously not using the right charger as they could not even get the LG logo to come up. I am hoping that it is a software issue as the company could not find a single thing wrong with the phone or board. Of course, they mainly fix hardware (broken screens, charging ports, etc.) so I dunno how much experience they have with software.
Click to expand...
Click to collapse
A few months back, my Nitro fell off my table while the charger was attached. Ever since then, it is doing what you say; showing a charging icon but it actually isn't charging.
Just a few suggestions that I've learned over time dealing with this problem... When you are plugging it in, be sure it is setting where you intend for it to sit. Basically, don't plug it in THEN set it down. I've noticed that ANY movement whatsoever will knock the phone off charge but still show the charging animation/icon. This problem is completely independent of the state of the phone; i.e. what ROM I'm booted in to, whether or not I'm in recovery, and even with the device powered off.
How to tell if you are actually charging; open your settings and go to the battery settings. Where it normally says "Discharging" will change to "Charging (USB)" or "Charging (AC)" if you are actually charging. Even with the charger attached, any movement of the phone will almost instantly throw it into "Discharging" while still showing the animation/icon.
Hope any of this helps.

P605 Charging/USB Problems

Hi
Just recently my P605 has developed 2 rather serious problems. The first is that my PC no longer recognizes the tablet, when I plug it in, nothing happens at all, no USB device is detected, nothing comes up on the tablet to say USB connected, it just starts charging. The second problem is it keeps stopping charging. Just this morning it was stuck at 22%, it would charge up to that, then the battery icon would not show it charging anymore.
Through continued switching on and off, it's charging up, but seems very irregular. I've left it switched off on charge now to see what happens. I've ordered a replacement USB port for the tablet wondering if somehow I've damaged it. I've also cleaned the socket out to make sure no fluff was stuck in there causing connection problems.
I've tried the tablet plugged into different PCs/Laptops with different cables, still no USB connection . I've also tried a new ROM, reflashed a few times (which was a PITA) as I had to download via dropbox as I couldn't find my SD card adaptor lol.
Any ideas?
Cheers
Andy

Well I'm stumped. Must be a hardware issue .
I've swapped out the USB connector/ribbon cable and still no USB connection to my PC. Plug it in and nothing at all, either on the tablet or PC. Got it charging back up to 100% and everything else is fine.
Guess I'll have to live with it as it's not under warranty as it was bought from Hong Kong and is also pretty well hacked/rooted etc..
Any other ideas?

i hope someone answers this. i also have the same kind of problem.
really though, i think we'll be better off with better supported tablets in the future

Similar Issue
andythilo said:
Hi
Just recently my P605 has developed 2 rather serious problems. The first is that my PC no longer recognizes the tablet, when I plug it in, nothing happens at all, no USB device is detected, nothing comes up on the tablet to say USB connected, it just starts charging. The second problem is it keeps stopping charging. Just this morning it was stuck at 22%, it would charge up to that, then the battery icon would not show it charging anymore.
Through continued switching on and off, it's charging up, but seems very irregular. I've left it switched off on charge now to see what happens. I've ordered a replacement USB port for the tablet wondering if somehow I've damaged it. I've also cleaned the socket out to make sure no fluff was stuck in there causing connection problems.
I've tried the tablet plugged into different PCs/Laptops with different cables, still no USB connection . I've also tried a new ROM, reflashed a few times (which was a PITA) as I had to download via dropbox as I couldn't find my SD card adaptor lol.
Any ideas?
Cheers
Andy
Click to expand...
Click to collapse
Hi I bought the 10.1 2014 Edition back in June. Around November it suddenly started to stop charging. Tried different cables, chargers, charging through PC (very slow) and charging through socket. Took me a couple of weeks to see a pattern. Seems that while charging, if it goes to sleep or locks itself, it stops charging. So I set it to turn the screen off after 30minutes and then it charges. I have it beside me and just touch the screen before the 30mins are up. Not ideal, but allows me to charge it.
I have been searching online and can't see anywhere about how to tell it to keep charging when locking?
Anyone confirm my findings or know a solution?

Hi
Well I'm still stumped. I can only charge to 100% now if the tablet is switched off completely. If it's switched on, it tends to stop charging at any given point. It also still does not connect to a PC/Laptop. Plug it in and nothing happens, USB connection is dead. I changed the USB socket/ribbon cable out and still the same, so must be a hardware issue deeper inside.
Unfortunately my tablet is so hacked about that I doubt Samsung would touch it. Can't really sell it either as who would want a tablet that they can't connect to USB or have to switch off to charge .
Cheers
Andy

My P605 only charge with samsung charger.
with the original one and another samsung charger (700mAh) it charge very well, with standard USB chargers (5V, 500mAh to 2000mAh) the connection is "unstable" and seems the cable is connecting-disconnecting. Try it

All these issues are with the Samsung OEM charger. Seems it'll charge as I use it, but once it goes into standby, it stops. So only way to charge is either switching off completely, or charging whilst in use.

Finally fixed this issue!
Sold the tablet and bought a Note 12.2

OzTraveller said:
Hi I bought the 10.1 2014 Edition back in June. Around November it suddenly started to stop charging. Tried different cables, chargers, charging through PC (very slow) and charging through socket. Took me a couple of weeks to see a pattern. Seems that while charging, if it goes to sleep or locks itself, it stops charging. So I set it to turn the screen off after 30minutes and then it charges. I have it beside me and just touch the screen before the 30mins are up. Not ideal, but allows me to charge it.
I have been searching online and can't see anywhere about how to tell it to keep charging when locking?
Anyone confirm my findings or know a solution?
Click to expand...
Click to collapse
Bringing this back up because mine started doing this exact thing, and I'm having to charge mine the same way.
Im about to call into TMo CS and get a replacement, but Id rather not deal with that if I can keep my current tablet.
Any fresh ideas?

I'm having the same problem, mine happened after replacing the battery. I can get it to charge but it's a slow trickle and it will lose power even when plugged in if I'm using it.
I replaced the USB flex cable and that didn't work either. I'm thinking something happened to the motherboard since I can't track it down.
I'm going to take mine to a repair shop to see if they can figure it out.

changing problems
I have two of these Samsung Tablets. One charges perfectly as expected.
The other tablet is a problem.
It charged fine for about a week after purchase and then stopped working as expected, i.e. it started
charging and showing the charging symbol but then it would stop charging after a short while.
After several chargers and many $$$'s (all 2.0A current or more), I found that I could charge it when
switched OFF but very Sloooooowly. Unfortunately, I have not been able to get 100% charge for
several months now as it would take more than 1 night of charging to achieve this.
This afternoon, as I searched for solutions on the web (as I have many many times before), I found the
Display was going off within seconds of plugging in the charger so I updated the settings to have the
display on for the maximum 30 minutes. Interestingly, I found that the charger symbol stayed on!!!
It stayed ON until the 30 minutes display timeout completed. I am now ensuring that there is some
interaction with the table at least every 30 minutes until it is fully charged. By the way, the charging is
fairly quick too - certainly quicker that when it is switched off.
So, I am agreeing with one of the other people on this forum on what is occurring.
My suspicion is that this USB issue was triggered when I attached an external storage device to the USB
but I cannot find anything in the configs to look at or change its status (as you can on some Android
phones, e.g. Sony Xperia).
Hope this is of HELP to some of you.
regards

Re solder the battery connector, the black connector that you plug the cable in. Most problem of not charging is from this cracked connector.
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This connector may look not exactly like yours, but they are similar in all Samsung tablets.

First try to open de tablet and unplug de battery connector. Wait a seconds and plug it again.

Hello everyone!
I "was" having the same issue with my SM-P607T. The tablet was not charging with the screen off or powered down. It was only charging if the screen stayed on always.
So I used the 30 minutes screen time out to charge it. Later, I discovered the "Stay awake" option in Settings>General>Developer options.
(For faster charging I dimmed the screen completely and turned off Wi-Fi, Bluetooth and Location)
That solved the problem temporarily.
Yesterday, I ran the Lollipop update on the tablet and consciously, start charging the tablet with a lower screen timeout and locking the screen. Today, when I woke up, the battery was 100% fully charged.
Maybe it's related with software issues, maybe not.... Maybe it's related with the hardware, maybe both... but this is what I have observed up to now.

bfrancisco2 said:
I "was" having the same issue with my SM-P607T. The tablet was not charging with the screen off or powered down. It was only charging if the screen stayed on always.
Maybe it's related with software issues, maybe not.... Maybe it's related with the hardware, maybe both... but this is what I have observed up to now.
Click to expand...
Click to collapse
Your tablet should be charged regardless it's on or OFF. Either your USB charging port or battery connector is the source of problem.
Don't overlook your USB cable or charger, try a working one to test.
Try to replace the USB charging port, if nothing is improved, the battery connector needs to be re soldered.
http://www.ebay.com/itm/New-USB-Cha...520-SM-P605-/161796889092?hash=item25abd89a04
US sellers may have higher prices but they ship faster.

Beut said:
Your tablet should be charged regardless it's on or OFF. Either your USB charging port or battery connector is the source of problem.
Don't overlook your USB cable or charger, try a working one to test.
Try to replace the USB charging port, if nothing is improved, the battery connector needs to be re soldered.
Click to expand...
Click to collapse
Ok. But how we explain that the tablet only charges with the screen always on? Is that still a usb port problem?

bfrancisco2 said:
Ok. But how we explain that the tablet only charges with the screen always on? Is that still a usb port problem?
Click to expand...
Click to collapse
I cannot point to the source of problem from many unknowns: USB port, USB cable, charger, battery connector or mainboard
You can only verify by using precise tool to check if the tablet is drawing correct current, normally around 1.7 Amps
http://www.ebay.com/sch/i.html?_fro....TRS0&_nkw=usb+voltage+current+meter&_sacat=0
Do one by one, verify by known working parts until problem solve, technicians have to do the same things by elimination method to find the source of the problem.
The most common problem of this tablet: only ON when plugged in, resolder the battery connector will fix it permanently.
One easy test of bad or cracked battery connector: remove the back cover, apply pressure directly on battery connector when plugged in, press the HOME button and you see the green battery icon flashing, then this battery connector need to be re soldered.

Please revive hard bricked Desire 820 dual sim please. (recognized as QDLoader 9008)

Hello.
I have Desire 820 dual sim. Three days ago, screen blacked out suddenly, phone poweered off. After that, the phone didn't power up.
I tried push a power button for 10 seconds or more, and volume up + power button, volume down + power button with similar way. Without charging or connect to computer with USB cable, no reaction has shown. When it is connected to power, orange led is blinking and does not power on.
When it is connected to computer, device is recognized as Qualcomm HS-USB QDLoader 9008(COM3). I found that is download mode for snapdragon SoC. I think flash memory is wiped out with unknown reason, and main board seems alive.
I searched the internet to revive this bricked phone, but I can't solve this problem. Even in xda developers.
Is there any solution I can do? I installed QPST package from Qualcomm which contains QFIL and etc. If I can install proper fastboot on this phone, it will revive. I bought this phone in Hong Kong, and I live in S.Korea now, there is no service center for HTC. Please help to revive my bricked 820. Thank you.

A similar situation just happen to me, the phone was ok, I got a voice chat and while hearing it the phone make a strange noise and went off. After a few seconds it came back up at the HTC logo, so I guessed it would boot back up and everything was going to be back to normal working conditions. To my surprise it didn’t happen that way. The phone was on a boot loop and I wasn’t able to go into fastboot, recovery or anything. Some minutes later the phone went off totally and it wasn’t turning back on. I plugged it to see if it was discharged and the orange led was just flashing, I leave it there for more than 30 min and the same thing was going on, flashing orange led, no power whatsoever.
What I did was to remove the device back cover, disconnect the battery cable from the main board for a few seconds and put it back. The phone first comes on normal and enter into android, but just of a sudden it start boot looping again. This time I was able to power it off and enter into bootloader to perform a factory reset. Once finished the phone seem to try entering into android but something happen during the boot process, phone goes back to the boot loop.
So what you can do is to try reseating the battery cable and see what happen. Be careful doing this since you could damage the phone or short the battery out which can be dangerous.
At least now when charging I have a solid orange light, I still have to work out the boot loop issue.
Let me know what happen.

How can I disassemble the phone?
kehfren said:
A similar situation just happen to me, the phone was ok, I got a voice chat and while hearing it the phone make a strange noise and went off. After a few seconds it came back up at the HTC logo, so I guessed it would boot back up and everything was going to be back to normal working conditions. To my surprise it didn’t happen that way. The phone was on a boot loop and I wasn’t able to go into fastboot, recovery or anything. Some minutes later the phone went off totally and it wasn’t turning back on. I plugged it to see if it was discharged and the orange led was just flashing, I leave it there for more than 30 min and the same thing was going on, flashing orange led, no power whatsoever.
What I did was to remove the device back cover, disconnect the battery cable from the main board for a few seconds and put it back. The phone first comes on normal and enter into android, but just of a sudden it start boot looping again. This time I was able to power it off and enter into bootloader to perform a factory reset. Once finished the phone seem to try entering into android but something happen during the boot process, phone goes back to the boot loop.
So what you can do is to try reseating the battery cable and see what happen. Be careful doing this since you could damage the phone or short the battery out which can be dangerous.
At least now when charging I have a solid orange light, I still have to work out the boot loop issue.
Let me know what happen.
Click to expand...
Click to collapse
Thank you for your thoughtful reply.
After read your reply, I decided to disassemble the phone. I searched the internet to do it, and I found a video disassembling it very easily. They peel the steaker(?) cover off located upon both speakers. How can I peel it off? My desire 820 is still in deep sleep.

kungmo said:
Thank you for your thoughtful reply.
After read your reply, I decided to disassemble the phone. I searched the internet to do it, and I found a video disassembling it very easily. They peel the steaker(?) cover off located upon both speakers. How can I peel it off? My desire 820 is still in deep sleep.
Click to expand...
Click to collapse
you will need a small flat head plastic screwdriver or an lcd pry tool to just lift up the speakers plastic. beneath you will find two screws you must remove.
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Failed to show boot screen after disconnecting the battery. orange LED still blinks.
I removed the battery line assembly and reconnected the battery.
But... orange LED still blinks. It's not different between before and after states.
When I connect the phone to my computer, it is recognized QHSUSB_BULK.
Is there anything I can do for reviving htc 820? I am even living in a country(nation) where has no customer service center,:crying::crying::crying:

hi guys even i am facing the same issue after that is there any update were u able to boot the phone if so how u resolved the problem kindly help me asap??

any solution ???? People say it is a software problem. My pc isnt recognizing the phone at all. Cant even get into bootloader mode

kunalkjc said:
any solution ???? People say it is a software problem. My pc isnt recognizing the phone at all. Cant even get into bootloader mode
Click to expand...
Click to collapse
Yours maybe caused by a fatal HW problem.

iSaidyiu said:
Yours maybe caused by a fatal HW problem.
Click to expand...
Click to collapse
Never dropped the phone at all. Just after a call, it turned blanked. My PC isn't recognizing, can I do anything about that.

kunalkjc said:
Never dropped the phone at all. Just after a call, it turned blanked. My PC isn't recognizing, can I do anything about that.
Click to expand...
Click to collapse
The problem can be accumulated, which mean it can caused by some environmental elements ( e.g. humidity, charging current and voltage ). These can lead to a sudden dead. Is your warranty still in effect? If yes, take it to your local retail shop and ask for repair!

iSaidyiu said:
The problem can be accumulated, which mean it can caused by some environmental elements ( e.g. humidity, charging current and voltage ). These can lead to a sudden dead. Is your warranty still in effect? If yes, take it to your local retail shop and ask for repair!
Click to expand...
Click to collapse
unluckily not in warranty. Although I will now give it for servicing

kunalkjc said:
unluckily not in warranty. Although I will now give it for servicing
Click to expand...
Click to collapse
My personal opinion here is that you may not want to pay for the repair fees as it cost you the same for a new phone...