Phone keeps auto disconnecting and connecting on PC via USB - G2 Q&A, Help & Troubleshooting

I've tried this on a hub and a USB port on the PC itself. The phone doesn't even recognize being plugged in on a USB port.
On the PC itself though, it connects and I can browse the files within for a few seconds and my phone then disconnects itself and connects back right after. And everytime it connects, there's a vibration so it's pretty much non stop vibrations. This is extremely annoying. I can't transfer any files over. Currently using Wireless Storage. Cr*p speeds but at least it gets transferred. Any idea what might be the problem? On a D802, rooted and with TWRP installed.

Mine will do this when charging in the car via USB. If playing anything out gets paused. Sux
Sent from my VS980 4G using Tapatalk

Bump.
Huh i thought i was the only one. My G2 does this too. My PC is pretty old and it was on Win 7 and MTP didn't work. So i formatted my 4yo Win 7 to Win 8.1 and now MTP works. It's definitely much faster than Wireless Storage/OSP/3rd party app but what's the point if it keeps disconnecting.
Another thing is, it does happen to my thumbdrive as well. Just that with the G2 it's much worse until i can't transfer any files at all. So the super slow wireless is the only option.
Any solution? Or do i need to upgrade my PC lol.

Try changing the port. Maybe the usb cord is loose or the port itself. This happened to my S2 after dropping it. Maybe the motherboard was moved inside i dunno and after that it keeps connecting and disconnecting when i plug it,

I think you all suffer from too less power throughput from charger/cable/port.
It's like the same when you do not use the supplied charger but another brand your phone will not fast charge.

I was thinking the same too because it doesn't happen when i plugged the phone on another PC.
So the solution is, unplug unnecessary devices and it shouldn't disconnect anymore. If it still happens, try not doing anything on the pc while data is transferring. At least it works for me.

I am also rooted and the problem only seems to happen when the screen turns off and then locks. If I unlock, it comes back.

same problem
I've used my I9300 on stok ROM, no problem, i've flashed ArchiDroid V2.3.4, and the problems apeard. conecting the phone to pc via usb, it connect's and deconnect's, i'm not able to copy anything to/from phone. I guessed it was a problem with the ROM, so i've flashed Resurrection Remix® 4.4.2 KitKat , but the same problem....don't know what's the problem...a little help pleeeeeaseee
PS: changed the usb cable(cord), the usb port, uninstall the drivers and reinstall them...
(off topic...who copied who on ROM...archidroid<->kitkat)
C'mon....i like archidroid...but i need the usb connection 2 PC, i can't live without it

Problem fixed.
I had exactly the same problem as this, I tried different USB slots (even USB 3.0), I tried resetting the phone several times but still it didn't work.
But after changing the charger back to my original iPhone one, it worked perfectly! Probably isn't that wise buying cheap chargers online tbh http://forum.xda-developers.com/images/smilies/tongue.gif

Related

Not the usual PC connection issue

Hi!
Ive got a big problem cause my Galaxy S just stopped being recognized by any PC. I dont know whats wrong, it just treats USB cable like it was a charger, PC doesnt detect anything neither does the phone. Its very strange since everything worked perfect for the last couple of weeks. I tried to connect it to a notebook i used to flash the phone a week ago and it has been turned off ever since so it cant be any driver related issue. Im afraid my micro-USB port is damaged but i have a custom firmware in it and since i cant reflash it the warranty isnt vaild ehh...
Any ideas?
THX
silly question...
Do you mount the phone via the status bar after you plug it in?
Thats the point - PC doesnt detect the phone AT ALL theres not even a sound that an USB device has been plugged in. The same thing in the phone it just starts charing it doesnt seem to know that its connnected to PC.
sounds like your PC mobo got the USB port fried.
try turning off the PC, unplug the power cord, wait for the energy to drain out, then turning it back on
my Windows 7 x64 some time does that, but it's not a hardware error
on yours it could either be a hardware dead, or the Windows gone Bezerk as usual
I tried different USB devices - other phones, pendrives and a printer and everything works fine except for the Galaxy S. The Samsungs USB cable also works fine with other phones..
I wrote to Samsung and they said to send them the device because its most probably damaged :\ Will they check the firmware version?
btw. as I said in the first post the phone doesnt work on my notebook as well
I wouldnt care so much about this because I can send files using ftp but I cant change the firmware without an USB port working (or am I wrong?)
I sometimes also have this problem. For me rebooting the phone and if it then doesn't work again using another USB port at my PC solves the problem.
Yesterday when the problem occurred for the first time I removed SIM and microSD cards and PC detected a device but it was recognized as 'unknown malfunctioning USB device' but no luck ever since.
Just to let you know my Samsung just fixed itself 0_o Might have something to do with the Windows reinstallation on my PC but it suddely works on my notebook as well. Im really confused now...

[Q] Epic not mounting

I cannot get my epic to mount for ANYTHING! I factory wiped the phone, nope, I used a palm pre usb cable nope, I downloaded the official samsung drivers nope, I plugged the cable into the motherboard on the computer nope, I tried a different computer running windows 7, nope tried a laptop using windows vista, nope. Does anyone know ANY WAY POSSIBLE to get this thing to mount? I selected mass storage and dissabled and enabled usb debugging. Im just not having any luck. It seems that the computer recognizes the phone is connected just cant get to the files on the SD card.
I also spent many hours trying to figure out what the hell was wrong with my Epic, that is, why it would come up as a "malfunction" in Windows when I plugged the USB cable in.
I tried drivers, different restore points, wiping, etc. etc. etc.
To the point... Try a new USB cable. The one packaged with the Epic is junk. As a matter of fact, it worked several times before it crapped out. I have no idea why, but I picked up a new micro USB cable, plugged it in, and the phone was then immediately recognized by my computer to allow mass storage mount.
People who tried the Palm Pre USB cable also had issues for some reason.
IMO, there should be a sticky posted in this board regarding the packaged USB cable, as I encounter this issue quite a bit.
Ok I'll try to find a new one really quick thanks
ugh tried an HTC Mytouch 4g usb cable and that didnt work either. Gonna try a class 4 usb stick and im gonna try puttting all of the files on the computer from the SD card
Edit: Oh wow i cant put the files on the computer duh
Edit: Ok now I'm mad a Class 4 SD card wont connect to the computer thru the epic ughhhh
I'm guessing during this time, you've rebooted the computer a few times? Sometimes, that's all it takes...
Try uninstalling ALL of the USB drivers associated with the Epic, rebooting the computer, then connecting (with debug mode OFF). Windows found and installed the USB drivers for me in just a few seconds when I did this [with the new cable, the first time].
- G
Have u enabled development mode under settings > applications (in your) epic? If not, try that, then plug in cable.
Then pull down the notification bar and it'll give you back the option.. again, if you haven't tried this.
On occasion I have troubles with the Epic mounting/ejecting on a Mac, but the only time I've ever had an issue with it mounting on a PC a different cable solved the problem immediately.
Try a different USB port on your PC. If that doesn't work, try rebooting the PC and the phone.
I had luck with trying different usb ports though
I had this problem as well and:
1. Tried 4 different cables
2. Tried all 4 on all 4 different USB ports
3. Rebooted numerous times
4. Uninstalled/reinstalled drivers
5. Tried 3 different PCs (1 other running 7 and another running Vista)
6. Did 1-4 on all three computers.
OH! and the reason I was so adamant about finding a solution was that I was stuck in Clockwork... due to having messed up an EXT4/RFS/CW2.5/CW3.0 installation... It was MY fault... I screwed up.
The problem was I had been living with the nonmounting problem by simply putting my MicroSD into an adapter and plugging it into my Laptop for file transfers... never expecting to HAVE to ODIN at some time...
Anyway... I ended up coughing up the $100 to Insurance and replacing the phone.
HERE IS MY THEORY: I think what my problem was was that the USB port on the Phone was messed up. I think these USB ports are possibly a hardware fail point and the changing of cables has been a patch on the issue with the port... NOT the cables themselves!
I'm not suggesting that you are there yet since it sounds like you can at least still get the phone to boot up (and aren't stuck in CW) and could still use a work around of putting files on the MicroSD with an adapter...
But I would suggest you don't be as stupid as me and get yourself in a position where ODIN is your only hope.
Yeah, it sounded like a bad USB port to me. Also, FYIY, if you ever have to replace the phone through insurance, tell them that the phone was lost. Either way, it will cost you $100.00 to get a replacement and when it's reported as lost, they will also send you a new battery...
OregonLAN said:
Yeah, it sounded like a bad USB port to me. Also, FYIY, if you ever have to replace the phone through insurance, tell them that the phone was lost. Either way, it will cost you $100.00 to get a replacement and when it's reported as lost, they will also send you a new battery...
Click to expand...
Click to collapse
You don't really think that I sent in a phone that was stuck in CW do you? I don't think that would have worked too well for me.....
Cheers!
Did you end up doing an ODIN restore

[Q] Partly broken USB input - charging but "unknown device"

Hi guys!
I've had a problem over the day with my beloved HD2, and I've started to fear that it might actually be the hardware starting to decay. About a day or two ago, when inserting my phone to the MicroUSB cable, it recognized the HD2 just fine, had access too USB mount, ADB and all of that. Transfered some music to the SD-card (Trancent 16gigs Class 4, btw - still very well recognized by the phone to the time at writing this), but now, some time later I get nothing out of connecting the phone to either my laptop or rig.
I know it's not the drivers or the cable, since I've tried with others cables and a few other computers. The message is the same old "The device could not be recognized". But the funny thing is, somehow the device must know that its connected to a computer anyway, 'cause it instantly enables debugging and the option to enable mount. I, as of now, has had no luck getting into the SD card, sadly. Not even been able to pull logcats or anything, setting up wireless ADB hasn't been sucessful either - so where I stand now, I'm kinda in need for a helping hand.
Has anyone else ever had this problem too, or am I left out in the cold?
By the way, even managed to put on an older nightly CM9 build, as it was stored on my SD. No luck there either. MAGLDR mount / recovery mount doesn't function either. Same error.
The ROM I first had the problem on was PARANOIDANDROID v0.6. Then a nightly CM9 from sometime last week. Both immensely close to stock and ICS based. LEO512, by the way.
Please, give me a hand!
TL;DR: USB broken, still charging, help.
Your usb is getting loose (usb data connection becomes irratic and then stops working, continued use results in USB port ripped from mainboard), try to not use it while plugged in and see if the repair shop can fix it for you without breaking usb data. You can use the SwiFTP app in playstore to transfer files in the mean time.
You may also want to use a cradle charger to minimize USB port being used.

HD2 Charges but no data!?

Hopefully someone can help with this. I'm running Yuki 2.1 on my phone and my phone will connect to any pc and charge but will not be recognised as a device. Even after removing all USB devices with USBDVIEW i get no luck.
So steps I have tried:-
1.) Restarting everyting, phone and computer.
2.) Hard Reset phone
3.) Uninstalled all phone related software (zune, wp7 sdks etc)
4.) Different USB cables
5.) Disabled virus protection
Now I as far as I am aware I could just flash another Rom through magdlr (havent checked if this will actually work yet) but I only have the one sd card at the minute and because im using Yuki it'll be locked. So without being able to sideload the unlocker am I screwed? or can anyone think of something I can do?
I forgot to mention I also tried connecting to it via Ubuntu and both magdlr and WP7 dont appear to connect yet the phone charges fine. I'm stumped guys, any ideas?
the phone charging has nothing to do with windows desktop recognizing your phone.
what you said about ubuntu doesn't make sense...what are you saying about ubuntu?
i've found sometimes it takes a while for the pc connection to recognize the phone...shutdown phone an pc. try again. don't use pc to charge your phone..use external charger.
go into devices in the control panel..remove hd2 entries...reboot pc, try connecting.
OK what I am saying about both Windows (Multiple versions on multiple computers from Win7 to Xp) and Ubuntu (desktop os) is neither of them recognise the device what so ever, it is not a driver recognition issue, the device is apparentley not connected. There is no sign of it being connected to the PC at all, except for the fact it DOES charge. I have removed all previous drivers (including on my own pc where HD2 appears under devices & printers as suggest above), software and restarted both deivces many times since.
I am not charging my HD2 via the PC, I charge it from the wall. What I am saying is when it is plugged into a computer it does charge but according to the PC's it is does not exist as a connected device. Let alone recognizing the phone. This has only happened since this particular boot of Yuki 2.1, I have had multiple other Roms including this one before and never had this issue before.
I have connected it to computers on which the phone has never been conected to, and others that it has worked on all with multiple cables. So I am under the impression it is a phone issue, unless I have been a real derp and you can think of anything I may not have.
it could be a phone issue. i've always had yuki rom my phone, currently v2.1since first out, and no problems whatsoever. as i said, the phone charging via pc has nothing to do/with the pc recognizing the phone...it's a straight usb port power connection like connecting to any usb port.
see if you have the same issue with a different rom.
Thanks for your help. Think I have sorted it now.. I don't know why I didnt think of it sooner but I checked the usb port on the phone and the internal "pins" had been pressed up against the side of the connection so werent making contact with the cable. Looks like it was happily taking a charge like that but no data connection... seems to have just been a coincidence that after finishing installing yuki again that I was a total drip and mashed the charge into the port bending the pins.
So happy now I can keep my beloved HD2, untill the quad core run of WP8 devices are released.
I had the same problem in my MAGLDR mass storage USB phone connected to the PC but not in WP7.5, eventually was a problem with the cable.
glad to hear it was just misaligned pins.
Might also be the cable. I think I've got a similar problem - using the original USB cable Zune recognices the device, using another cable it doesn't (Unknown hardware). But the phone is charging with both - and I don't see any damaged pins on the phone.

My Galaxy S4 won't stay connected to the computer via USB

Hey all. Just got my Galaxy S4 today and I was loving everything about it until... right now. For some reason, the darn USB won't stay connected to the computer. It doesn't matter if it's simply plugged into the computer as an "installer" or as a media device. It'll constantly disconnect and reconnect itself, even when I'm not transferring any files.
It's not the my computer/USB ports, either, since I can transfer files between my HTC Thunderbolt and Nexus 7 fine. I've also tested 2 other USB cables and they all behave the same way.
Anyone know what's going on? Did I get a lemon?
No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.
snwman said:
No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.
Click to expand...
Click to collapse
same problem with me!
every thing ok with s3 but the problem only with s4
please we need help to solve this problem!
Same problem
I have also been dealing with this for a while now. I have Windows 7 64bit and I have reinstalled the drivers many times through Kies and manually. It seems like the problem is getting worse since initially I could do some file transfer through usb if i fiddled with the device (changing usb ports, unplugging it, etc). Now I am hard pressed to get it to show up on the computer through MTP at all.
This is quite annoying since I am developing an android app and I need a usb connection in order to test it. A fix would be awesome.
I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.
retsnom said:
I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.
Click to expand...
Click to collapse
I do same thing, it is worked in another computer.
I am already put fresh win 7 but still same problem..
im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms
snwman said:
im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms
Click to expand...
Click to collapse
I'm on stock, no root.
Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app
Tested it out on a fresh copy of Windows 7 and it still continuously disconnect. What gives?
taargaa said:
Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
Oops, missed your post. Unfortunately, it disconnects regardless of the phone's state.
My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.
dirrtpoor said:
My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.
Click to expand...
Click to collapse
I've been trying all kinds of different combinations of USB leads, phone settings and ports all morning and was just about getting ready to start a new Olympic sport of S4 hurling when I came across this post and plugged my USB straight into the back of my machine and it finally works!! Thank you dirrtpoor for your input - a simple fix, but nevertheless it worked.:good:
I suppose it makes sense that a quad core 1.9Ghz phone would be a power hog.
It wouldn't work on my home PC whatever I tried. Front or back USB ports.
On my dads PC sometimes it would display OK and other times "usb device has malfunctioned" (didn't try the rear USB port)
On my work PC it works fine on the rear ports.
I was having the same problem a few days ago, but then I reformatted the SD card, now everything seems OK.
Even the stock gallery app works now...?!
Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.
Samsung S4 sync problem
mgrisan1 said:
Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.
Click to expand...
Click to collapse
This may be laughably obvious but I'm a former Apple user, which has it's own dedicated USB connector, so I forget sometimes with the Samsung S4, which has a standard (looking) micro USB connector that I need a USB cable that is enabled for syncing as well as charging...not all USB cords with micro connectors on the phone end will carry the data because I imagine Samsung has made their phone's connector require a different wiring in the cable.
I was pulling my hair out yesterday trying to figure out why the computer wouldn't see the phone..then looked at the USB cable and realized I'd plugged a non-syncing cable in. I tried the cable that came with the phone and bingo, worked like it was supposed to.
Hope this helps, sometimes it's the little things we overlook that drive us nuts.
Any way to connect in master storage with out root.
Sent from my GT-I9500 using Tapatalk 4
Use a different usb cable and usb port. I know it sounds stupid but there has definitely been phantom problems which were solved this way, even with something as simple as adb commands
i have same problem. trying all the way but always with the same result...

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