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I haven't seen anyone else complain about this, so it might just be a small defect or isolated incident.
I always charge my phone during the night while I sleep and just recently woke up to find the phone only at ~70%. For some reason the AC adapter seems to be malfunctioning. Since the issue has started, I managed to get it to charge to full one night, but the rest of the time it seems to stop charging. It recognizes it being plugged in initially but then it pops up with the notification saying that the charger has been unplugged. I've tried reconnecting both connectors which will sometimes get it to start charging for 15-30 seconds before it shows as disconnected again.
It works fine via USB connected to a computer so I can only assume it's an issue with the wall adapter. I'm not sure if there's much I can do if it is an issue with the adapter but wanted to see if anyone had any ideas that would be worth trying before I give up on the adapter. Also wondering if anyone else has had this happen.
I don't have that problem. Call and get it replaced. All you news is a USB AC adapter.
Have you checked the socket you are plugging the charger into? Have you tried a different wall socket or socket on the power strip?
Are you using a Motorola brand wall outlet and usb? I was using an aftermarket cable and had this issue. So I got a branded cable and now it's fine
Sent from my iPhone killer ATRIX using XDA Premium App
i had same issues
my atrix would only charge also to 70% so i was about to return it. i forgot that it also came with a stand alone battery charger to charge just the battery. charged it and then put it on my atrix and said 100% again. hope this helps..
Yeah get the wall socket and make sure that's not the problem. Also I can't imagine it being the cable I use a 15 foot after market cheapo cable I got off newegg for like 3 bucks and it charges my phone all the way and I don't even use the wall adapter moto gave me I use some random one that's for one of my old phone or my nikon camera I don't remember. Also moto cable is crap it doesn't let me use adb doesn't seem to push enough power to my phone.
But thats just my 2 cents
Sent from my Atrix
OEM charging cables > aftermarket/cheapo/gas station cables
Sent from my MB860 using XDA Premium App
Use the cables that come with the atrix.
Problem solved.
/endthread
My nexus 7 recently started to behave weirdly, it doesnt charge while turned on, neither with USB or AC. It does charge perfectly well when turned off.
I am unable to use the USB either no device is detected, nor in normal mode, USB debugging, fastboot or adb.
Please help me to get this USB brick fixed on my Nexus 7 asap.
Please help developers!
santan007 said:
My nexus 7 recently started to behave weirdly, it doesnt charge while turned on, neither with USB or AC. It does charge perfectly well when turned off.
I am unable to use the USB either no device is detected, nor in normal mode, USB debugging, fastboot or adb.
Please help me to get this USB brick fixed on my Nexus 7 asap.
Please help developers!
Click to expand...
Click to collapse
I've had this problem for a few weeks now and have yet to find a solution.
I'm quite astonished I haven't found a fix for this either. I have yet to open mine up ... I'm try to get the bootloader relocked, so I can warranty the dumb thing. But since it's not recognized by USB when powered on, I can't.
Have you tried putting pressure on the cable when it's plugged in? Also are you using the factory cable?
Sent from my Nexus 7(2012) that has zero issues.
SlowCobra96 said:
Have you tried putting pressure on the cable when it's plugged in? Also are you using the factory cable?
Sent from my Nexus 7(2012) that has zero issues.
Click to expand...
Click to collapse
Yep ... Tried pushing. Pulling. Etc. Factory cable. Non factory. Doesn't seem to matter. Anything I use charges fine off. Once on ... No juice
Sent from my EVO using Tapatalk 4
cmonsterf50 said:
Yep ... Tried pushing. Pulling. Etc. Factory cable. Non factory. Doesn't seem to matter. Anything I use charges fine off. Once on ... No juice
Sent from my EVO using Tapatalk 4
Click to expand...
Click to collapse
Unfortunately it is a hardware failure. Most likely the USB port assembly. It is possible there is a loose ribbon cable connection.
Nexus 7 not charging
I have the same problem. My Nexus 7 will not charge when turned on. It will not now connect to my pc. I have checked the drivers and all are ok.
It happened a few days ago Its rooted. I can restore backups that are on my Nexus through rom manager, but still the same problem. I thought of doing a factory reset, but if it will still not connect to my pc. I will loose the data. If it is a hardware usb port failure, what is the next stop
I know this is going to sound strange but open up the back of the Nexus and you will find your battery... And you will notice that it's loose you have to plug or wedge it back on to the battery clip it comes loose overtime use a credit card or similar to open the case :thumbup: success
sent from my t mobile S4
krazierokz said:
I know this is going to sound strange but open up the back of the Nexus and you will find your battery... And you will notice that it's loose you have to plug or wedge it back on to the battery clip it comes loose overtime use a credit card or similar to open the case :thumbup: success
sent from my t mobile S4
Click to expand...
Click to collapse
Thanks for reply, already checked battery and connections. It charges perfect when not switched on, that's what I find strange. It also charges when connected to my pc
sorry man good luck was hoping i could shed some light LOL
Did you find an answer, I also have the same problem
Sent from my Nexus 7 using xda app-developers app
Nexus 7 not charging/USB not detected while turned on
mswin341 said:
Did you find an answer, I also have the same problem
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Has anybody else had the same problem, if so, how did you overcome it.
Similar thing happened to me... No amount of pressure or angling of the charging port would work. Batteries ran dead as a result. Sent it to the service center and they would assess it for 2-3 days and try to repair since it is under warranty. I'm gonna get an official dock to try and save the charging port from the stress of always being in use although I know that's not the only factor at play.
Nexus 7 not charging/USB not detected while turned on
raylgo said:
Similar thing happened to me... No amount of pressure or angling of the charging port would work. Batteries ran dead as a result. Sent it to the service center and they would assess it for 2-3 days and try to repair since it is under warranty. I'm gonna get an official dock to try and save the charging port from the stress of always being in use although I know that's not the only factor at play.
Click to expand...
Click to collapse
That's sounds a good idea with the official dock for charging, but you should not have to do that.
To much usage of the micro usb port is going to give problems. I'm always connected to my pc, downloading roms ect. but as I said before, my N7 charges perfectly when not turned on.
Nexus 7 not charging/USB not detected while turned on
As I can't connect my N7 to my pc. Is there anyway to revert to stock. Need to return for repair. USB port not working as it should.
N7 is rooted
I have the same problem
Does anybody solve this issue?
I have the same problem, please help me
Write me to [email protected]
Thx
Nexus 7 not charging/USB not detected while turned on
Unimetano said:
Does anybody solve this issue?
I have the same problem, please help me
Write me to [email protected]
Thx
Click to expand...
Click to collapse
I think the only answer is a faulty USB connection.
I tried to change mine and finished up snapping the connectors. :crying:
Now have one useless N7
Long story short: plugged the n7 into the car's OEM stereo USB port on a long trip and it registered as a device with the stereo and let me play some music off of it, when I woke up a couple hours later it wouldn't charge.
After a short bit of troubleshooting, I found that OTG devices were still working but it would only charge if I shut it right down - if I start it charging while it's turned off and leave the charger attached while powering it up it's not detected by the software so it never says it's charging, but does still charge - though if at any point I pull the charger from either the n7 or it's supply I have to shut it right down again to get it to charge. Unfortunately, the same can't be said of a PC USB device connection (aside from the charging part of course.)
After a couple weeks using it like this, I got my hands on a multimeter (my stuff is all packed in storage indefinitely or I'd have been replying to this topic sooner) and confirmed that I never register anything beyond a few millivolts on the detect/sense pin (which I find very odd as it's supposed to have a pull-up) with nothing attached to the usb port, and that aside from a short time in fasboot that unless the n7 is powered right off it's trying to supply 5V to the USB connector. I attempted to use the faux123 kernel that has options to disable this power to allow host+charging (and my hope was to slow the battery rundown to make it more usable even if I have to shut it off to charge it), but the n7 appears to ignore this and still powers the USB connector.
In this case it most definitely is NOT the IO/USB/headphone assembly inside the unit. At the moment I'm operating on the theory that Asus skimped on protection circuitry in the charge circuit as in my mind this type of damage should never occur when it's properly designed, and I'm presuming the motherboard dead with regards to being a USB device - too bad my warranty is likely up, though I can't check that as it was a gift and all the paperwork is buried in storage. Thankfully it's still capable of fast charging when off, though this doesn't leave me very happy as this also effectively takes away most recovery options if fastboot is the only thing left working.
If I manage to source a replacement mobo I will work on doing a post-mortem and seeing if it's down to a faulty component (I've seen this sort of behaviour before, a pulled up line not getting pulled up, when a filtering capacitor decides to go flakey.) More likely though I'll either sell it, give it away or put it on the junk pile with the rest of the Asus products I've had to retire in the last month due to their questionable customer support (the other products were due to Asus deciding they were "legacy products" and not updating drivers for windows 8/8.1 despite only being 5 years old.)
Nexus 7 not charging/USB not detected while turned on
joeblowma said:
Long story short: plugged the n7 into the car's OEM stereo USB port on a long trip and it registered as a device with the stereo and let me play some music off of it, when I woke up a couple hours later it wouldn't charge.
After a short bit of troubleshooting, I found that OTG devices were still working but it would only charge if I shut it right down - if I start it charging while it's turned off and leave the charger attached while powering it up it's not detected by the software so it never says it's charging, but does still charge - though if at any point I pull the charger from either the n7 or it's supply I have to shut it right down again to get it to charge. Unfortunately, the same can't be said of a PC USB device connection (aside from the charging part of course.)
After a couple weeks using it like this, I got my hands on a multimeter (my stuff is all packed in storage indefinitely or I'd have been replying to this topic sooner) and confirmed that I never register anything beyond a few millivolts on the detect/sense pin (which I find very odd as it's supposed to have a pull-up) with nothing attached to the usb port, and that aside from a short time in fasboot that unless the n7 is powered right off it's trying to supply 5V to the USB connector. I attempted to use the faux123 kernel that has options to disable this power to allow host+charging (and my hope was to slow the battery rundown to make it more usable even if I have to shut it off to charge it), but the n7 appears to ignore this and still powers the USB connector.
In this case it most definitely is NOT the IO/USB/headphone assembly inside the unit. At the moment I'm operating on the theory that Asus skimped on protection circuitry in the charge circuit as in my mind this type of damage should never occur when it's properly designed, and I'm presuming the motherboard dead with regards to being a USB device - too bad my warranty is likely up, though I can't check that as it was a gift and all the paperwork is buried in storage. Thankfully it's still capable of fast charging when off, though this doesn't leave me very happy as this also effectively takes away most recovery options if fastboot is the only thing left working.
If I manage to source a replacement mobo I will work on doing a post-mortem and seeing if it's down to a faulty component (I've seen this sort of behaviour before, a pulled up line not getting pulled up, when a filtering capacitor decides to go flakey.) More likely though I'll either sell it, give it away or put it on the junk pile with the rest of the Asus products I've had to retire in the last month due to their questionable customer support (the other products were due to Asus deciding they were "legacy products" and not updating drivers for windows 8/8.1 despite only being 5 years old.)
Click to expand...
Click to collapse
Very Interesting
I am sure you are right, but I'm not qualified to agree or disagree.
I have had quite a few Asus products in the past and never had any problems.
My Nexus 7 (2012) was also charging properly. I only have the issue that it only charge when turned off AFTER I charged it:
(1) using car charger; and
(2) charge it using official charger but inside a train using train's power plug
So it seems that these devices really need a normal wall-charging paired with official charger.. otherwise, something bad might happen..
Has anyone tried to use Wireless Charger? does it work?
phone only started doing this over the last couple months, used to be able to plug in (either charger / cable) and charge in AC mode without supervision.
Nowadays, it takes several plug in attempts to even START in AC mode, but typically it'll drop down to USB (the screen comes on momentarily when the change occurs) at some point in the charging.
Worst case scenario, it'll change rapidly back into AC and out, to the point where I can watch it on happen on the screen. That's rarer though.
It never changes INTO AC and stays there, to be clear. Always a downgrade to USB charging.
Is something wrong physically with the jack on the phone? I've never damaged the phone, dropped in water, etc.
If RMA is what's suggested as my only option - is that a brand new phone or refurbished?
Use another USB charger, its a known problem with the supplied LG charger with the N4. I myself have this problem but am using another charger and its fine.
The USB cable has no problems btw, its the charger itself.
Can you link to your sources on this being a "known problem" ?
I'm pretty sure the same issue persists with my old Samsung charger too - the one supplied with the Galaxy Nexus. So.. that suggest the problem is with the phone, not the charger/cable.
i also have the exact same problem just now.. i'll try using another charger tonight at home..
just now i charged my nx4 using its original charger, in just a couple of minutes, the phone is saying that its being charged using usb.. stupid..
I'm also getting this at the moment, I'm completely stock, not even rooted and this has cropped up only since the 1.8mb Security Patch....
Any fixes?
Will root if I can fix it....
I was/am having this issue as well. I typically charge my phone via car charger (works fine) or wireless, so I can get around this issue easily. Plugging it into the PC and enabling fast charge with franco's kernel works as well.
I tried my N10 charger and it was dropping to USB as well. When I'm at my friend's place and use his generic charger, it works fine.
I used to have this issue but ever since I updated Android to 4.3, my charging works just fine.
Sent from my Nexus 4 using xda premium
filthykid said:
I used to have this issue but ever since I updated Android to 4.3, my charging works just fine.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Might try a factory reset and see does it make any difference...
do we have any more thoughts on this issue? is it a software bug? is it hardware? which hardware? I am going to experiement with a few different wall chargers and usb cables.
so 3 chargers (Galaxy Nexus' , Nexus 4's, USB 3.0 port on PC) and 3 cables (likewise + cable from monoprice)
SEEM to yield the results, that the problem is the connection between the cable and the phone. The oldest and most used cable has the hardest time establishing and maintaining an AC connection, the newest/lest used one from monoprice has never had a problem, and the LG cable is in the middle.
Is this an issue of wear and tear on both the cable connectors and the phone's port? It's really lame the phone and it's cable are not even a year old and THAT can't stay charging at AC voltages.
Will a replacement phone from Google be a refurbished unit or brand new?
bump
deusfaux said:
If RMA is what's suggested as my only option - is that a brand new phone or refurbished?
Click to expand...
Click to collapse
They will send you a new (not refurb) phone and you will have 21 days to send back your old phone. The replacement process is super easy, just call them at +1 855 83NEXUS and tell them your issue. They will walk you through a factory reset and if the problem is not fixed they will replace it.
I've had issues with the microusb port on multiple phones in the past, and have definitely noticed the N4's socket getting looser.
On an old HTC sensation, I had to resolder the port on. Can you reproduce the behavior by applying slight pressure to the plug in various directions?
Does your connection also intermittently drop out when connected to a computer?
A workaround for the time being could be to use a kernel that allows you to force fast charging regardless of the detected charger. But at that rate, it's quite possible you'll lose your usb port altogether sometime in the future..
You could also enable adb over wireless, and check the charger type:
Code:
cat /sys/kernel/debug/msm_otg/chg_type
You should be seeing DCP (has the data pins connected, possibly with some resistance).
Or proprietary if you're using an Apple-compatible charger (has aspecific voltage on the data pins).
If you see SDP, it means it's in "USB" mode.
If it's staying DCP/proprietary but the charge rate is dropping to "USB," it means the phone is throttling down the current because it's detecting the charger can't deliver (voltage dropping below threshold).
with the good cable (monoprice), wiggling has no effect.
with the poorest cable (samsung), wiggling will rapidly change it between AC / USB / nadda
with the LG cable, wiggling, will SOMETIMES have an effect. sometimes it's solid and will only become a flaky connection after it's been charging a while already
I got a wireless charger thinking it would be kinda cool but the phone gets hot when charging. Does anyone know of any issues that this may cause? Should I continue to use it?
I've been using wireless charging at home and work for over a month and love it. But it stopped working a few days ago, and the device no longer detected when placed on a wireless charger. Then it worked sporadically for a day, and now it's dead again. Any suggestions or diagnostics I can run to figure out if it is a hardware or software issue? TIA
Sorry to ask ... but it could be the charger itself ?
I have a cheapo charger and it can act up sometimes. Luckily, it has a LED ... if the light stays on after I remove the phone then I
will need to reset the charger (or it won't charge the phone next time).
I don't think it is the chargers, since the phone started failing on both at the same time and the Nexus 7 still charges fine on the one I have at home. I wonder if there is a software setting to turn wireless charging on/off or something?
I think that the problem may have been static for some reason. I have found that rubbing the back of the phone with a cloth (my shirt) before putting it on the wireless charger gets it to work. This holds true with or without bumper case on the phone, and works for my home and office chargers. Strange.