Develop Bugs

Will not stay connected via USB

i searched around and i cant find the thread on this.
i was charging my phone through the USB port and it just randomly disconnected. i reconnected at it is recognized for a second then disconnects. the menu comes up on the screen and i see the notification at the top, but after about 2 seconds it just acts like i unplugged it
i have tried multiple USB ports, cables and different PC's and they all do the same thing now.
i installed HTC sync and rebooted the machine. i changed the power settings on the machine and made sure that the USB power management is disabled.
does any one have any idea whats going on?

Do you have a auto kill app such as taskiller ?
Sent from my PC36100 using XDA App

no... the phone was just hard reset. the issue was there prior to the hard reset
it does the same thing on my laptop and desktop
both are windows 7 x46 with HTC sync installed

could be your usb port on your handset OR/AND the usb cable's tip that you insert into the port could be loose/failing. wiggle the usb cord at the end where it connects to the phone GENTLY and see if its loose. should be s snug fit...

I have the same problem n started a few threads about it n havent gotten anywhere. My work computer has no problem seeing my phone but my personal computer will not, very very strange. Ill watch this thread n see if a solutions comes about.

seems like a very snug fit too me...
i should also mention that plugged in to the wall charger it has no problems
i have tried 3 different cables and 3 different computer and all USB ports on those computers, all the same issue

I didn't have this issue till now but suddenly same thing started happening to my phone..
I have plugged in my phone using USB with laptop and it shows me charging but after two minute it just discount it...

me and my buddy have the exact same issue here. what i do is, i unplug it a few times and on the 4th i keep it it. seems to be a bit more stable that way.
i don't think this is an issue with faulty usb ports on everyone's separate computers. (could be but i frelling doubt it) ive tried this in multiple windows machines (win7x64 and xp), and it happened on all of them. Only once did it happen on my work mac. i have not, however, tried a different micro usb > usb cable. i only used the htc one. we could have faulty cables. or it could be a phone issue itself, hardware wise whereas these are the only common denominators we have in this problem that i can see.
i lean towards faulty batch of cables. if you plug in the cable to your phone and computer, and wiggle the middle of the cable without touching the ends, it will disconnect.
what gets me is that there is no problem when it connects to the wall usb port. that is confusing. maybe the cable needs a more heavy flow of power to stay connected, which then leads me to believe that usb drives don't have enough juice to keep the thing going, or at least variable flows of power.
i know the phone has an "issue/feature" where it will stop charging the phone completely when it gets to 100% even if you leave it on the charger. maybe some sort of overcharging fail safe right? so what if there is something wonky going on with the phones usb port, or the phone cuts off the connection thinking your done using it?
its late, im speculating just throwing stuff out there.

I'm getting the same problem. Thing is, if it needed more power, why would it still work in a mac? I didnt have this problem until I went through a few different ROMS. So I dunno. I never had this problem before root. But I dont see any reason why it shouldnt fuction normally

can't connect to usb

i can't connect my sgs2 to USB storage. when i plug in the usb cable to my computer and phone it will charge but nothing else happen. i had stock rom before but are currently using jug 4.0. i thought it was the rom so i downgraded to 3.69. still the same problem. i mean i can do anything with the phone just can't let my computer detect the phone. i tried to reinstall the driver, nothing works. please help!

Is your cable a samsung branded one? I had that same problem but with stock rom. I used an LG branded cable and the phone would connect to the computer and charge, but would not go into USB mode.

yeah, i am using the one that came with the phone, i guess i will try to use a different one. it was working fine before, don't know why it just stopped!

This has happened a few time for me. Sometimes the phone has only needed a reboot, the wire definitely plays a big role... I bought some cheap cables that didn't work at all... some of the older roms wouldn't show USB connected unless drivers were installed (kies). An issue I've more recently unveiled is after using an MHL adapter sometimes the USB will connect for 30-60 seconds before unmounting storage again. Hope that helps
My SGSII HercuDom needs more w00t. It always needs more w00t!

I had the same problem on a stock phone (purchased in late Oct from T-Mobile store in Arizona). I would connect it to the computer and it would charge but would not recognize the USB function (for data transfer or modem use).
Took it back to T-Mobile and they overnighted me a new one for no charge. New one works fine.
papayaforever said:
i can't connect my sgs2 to USB storage. when i plug in the usb cable to my computer and phone it will charge but nothing else happen. i had stock rom before but are currently using jug 4.0. i thought it was the rom so i downgraded to 3.69. still the same problem. i mean i can do anything with the phone just can't let my computer detect the phone. i tried to reinstall the driver, nothing works. please help!
Click to expand...
Click to collapse

Same thing happen to me 2 weeks before. Send back to Samsung in Plano TX and was told it had corrosion in usb port. Them asswipe told me its would not be fix duo to water damage. Dont know how water/moisture got in the port but thats there explanation. All it does is charge from pc, tried using 3 different cables 3 different pc and same thing. Some say a tooth brush might help but tried it and still same.

read this http://forum.xda-developers.com/showthread.php?t=1427301

Cant charge or connect to USB
Hello, i just bought a samsung sgh i777 and when i try to connect it to charge it, wheter is on the wall or computer, a battery starts to flash, if i disconnect it, the phone starts as if you are turning it on. So far i've tried: Change the battery, change the charger several times, put factory settings and still the same problem, can anyone help me?
Thanks,
FS

USB Problem.

Just got a brand new Samsung Galaxy SII T989 from T-Mobile this week, it really is a great phone, only I have a single problem.
The phone charges, it functions properly generally speaking (calls, texts, camera, wi-fi,etc...) but as soon as I connect it to my computer it freaks out.
It acts as if I were disconnecting and reconnecting the USB cable 2 times a second. I can hear the phone making the beeping sound it makes once you connect it to the USB every few seconds and in my computer (Which is running Windows 8 x64, just in case.) I can see the "Safely remove hardware symbol pop up and disappear a few times a second as well.
This is really frustrating... I love to take pictures and videos and edit them... I'd also love to copy some music over as well...
So far I've determined it can be the cable, bad drivers, or the phone itself, I just hope it's one of the first two.

Slash837 said:
Just got a brand new Samsung Galaxy SII T989 from T-Mobile this week, it really is a great phone, only I have a single problem.
The phone charges, it functions properly generally speaking (calls, texts, camera, wi-fi,etc...) but as soon as I connect it to my computer it freaks out.
It acts as if I were disconnecting and reconnecting the USB cable 2 times a second. I can hear the phone making the beeping sound it makes once you connect it to the USB every few seconds and in my computer (Which is running Windows 8 x64, just in case.) I can see the "Safely remove hardware symbol pop up and disappear a few times a second as well.
This is really frustrating... I love to take pictures and videos and edit them... I'd also love to copy some music over as well...
So far I've determined it can be the cable, bad drivers, or the phone itself, I just hope it's one of the first two.
Click to expand...
Click to collapse
Try re installing the correct drivers or switching the usb hub. If that does not work it's most likely the usb cable, swap it for a different one and you should be fine considering you bought the phone new.

Or you got a phone with a bad motherboard which would be crazy considering its new but that kinda sounds like the problem I had
Sent from my SAMSUNG-SGH-T989 using xda premium

imanoobfml said:
Try re installing the correct drivers or switching the usb hub. If that does not work it's most likely the usb cable, swap it for a different one and you should be fine considering you bought the phone new.
Click to expand...
Click to collapse
Alright cool, but how does one find currently installed drivers when the device isn't plugged in?

Slash837 said:
Just got a brand new Samsung Galaxy SII T989 from T-Mobile this week, it really is a great phone, only I have a single problem.
The phone charges, it functions properly generally speaking (calls, texts, camera, wi-fi,etc...) but as soon as I connect it to my computer it freaks out.
It acts as if I were disconnecting and reconnecting the USB cable 2 times a second. I can hear the phone making the beeping sound it makes once you connect it to the USB every few seconds and in my computer (Which is running Windows 8 x64, just in case.) I can see the "Safely remove hardware symbol pop up and disappear a few times a second as well.
This is really frustrating... I love to take pictures and videos and edit them... I'd also love to copy some music over as well...
So far I've determined it can be the cable, bad drivers, or the phone itself, I just hope it's one of the first two.
Click to expand...
Click to collapse
Ok, does it get better or worse if you hold the cable with your finger when it is plugged in to the computer and phone and move it around a bit on the phone end? If so, I even got a Nexus 7 brand new from Google that the charge cable phone end was bad and would not make a good connect and I had to use a different cable and it works fine with my tablet.
If you use the same cable in your AC charger and on the computer then prolly not the cable.
It could be something in Win8 if it is trying to scan your USB port [like maybe a whacked anti-virus].
Have you tried a different USB port on your computer to see if maybe the one you were trying to use is bad itself?
If using a USB hub between your computer and the phone try removing the hub from the equation and connect directly to the computers USB port.

RealPariah said:
Ok, does it get better or worse if you hold the cable with your finger when it is plugged in to the computer and phone and move it around a bit on the phone end? If so, I even got a Nexus 7 brand new from Google that the charge cable phone end was bad and would not make a good connect and I had to use a different cable and it works fine with my tablet.
If you use the same cable in your AC charger and on the computer then prolly not the cable.
It could be something in Win8 if it is trying to scan your USB port [like maybe a whacked anti-virus].
Have you tried a different USB port on your computer to see if maybe the one you were trying to use is bad itself?
If using a USB hub between your computer and the phone try removing the hub from the equation and connect directly to the computers USB port.
Click to expand...
Click to collapse
I am using a HUB on a Razer Keyboard that I've always used BUT now that you mention it my webcam had the same problem. It wouldn't work with the HUB on the keyboard. I'll try another USB slot (My computer's other USB slots aren't very accessible which is why I've hesitated to try another slot.)
I don't use anti-virus and yes, the cable works perfectly fine on the AC USB to Power adapter it brings.

RealPariah said:
Ok, does it get better or worse if you hold the cable with your finger when it is plugged in to the computer and phone and move it around a bit on the phone end? If so, I even got a Nexus 7 brand new from Google that the charge cable phone end was bad and would not make a good connect and I had to use a different cable and it works fine with my tablet.
If you use the same cable in your AC charger and on the computer then prolly not the cable.
It could be something in Win8 if it is trying to scan your USB port [like maybe a whacked anti-virus].
Have you tried a different USB port on your computer to see if maybe the one you were trying to use is bad itself?
If using a USB hub between your computer and the phone try removing the hub from the equation and connect directly to the computers USB port.
Click to expand...
Click to collapse
I love you. It worked. It's the USB hub which doesn't allow much power to go through to the connected device. Thank yo so much.

S3 will not be recognized by any computer

So I have an I747 running stock 4.1.2 that was given to me by a friend. When I received it, I noticed I could not access it from any computer. I asked her if she had any trouble and she said no, that she always connected it to a computer and it was easily picked up. Before she gave me the phone, she factory wiped it. Since then, no computer can see it and no option appears in the drag-down menu. Using *#7284#, I set it to MTP and MTP+ADB with nothing changing. I have tried battery pulls, uninstalling/reinstalling drivers, Kies, etc., even changing cables (from cheap ones to the OEM Samsung and HTC ones). I've tried it on Ubuntu 12.10, 11.04, Windows 8, Windows 7, XP, and even Mountain Lion. No computers can see it.
Anyone have any ideas? I cannot even try to root or anything because no version of ODIN works. Yet, if I connect my S2 Skyrocket, all PCs read it, regardless of cable or OS.

I had this problem before and could not find a proper reason.
There *COULD* be a problem with your phones USB connecter. Some hardware could be damaged. This can be caused by incorrectly unplugging or plugging the device in, which can jostle the hardware and break it.
How long was the phone used for?
I hope you have a warranty :/.

Unfortunately, no, the phone does not have warranty. If the USB port were damaged, would it still charge fine? Because apart from no connectivity to a computer, the phone works fine and can see an SD card in it. Its internal storage is accessible through file managers, as well.
If it is damaged, would I be able to see the damage when opening it up? I would not hesitate to fix it if it is something I can re-solder back on or replace. I just do not want to get a replacement USB port if it is not the problem.

I had a very similar problem with my i747. If your phone charges when it's plugged in to the USB port of the computer, you might try this:
Make sure the Samsung drivers are installed. Power off your phone. Power on the phone in Download mode. (Volume Down + Home + Power) Press Volume Up to continue. Once it's in Download mode, plug it into your computer. Windows should now discover it and load the driver. Once this is complete, unplug the phone from the computer, and pull the battery out of the phone to get out of Download mode. Replace the battery, and power on the phone like normal. It should connect to the computer properly.
I found this on the Verizon S3 forums over on Android Central. Worked for me after a lot of other things didn't.
Best of luck!
Sent from my Galaxy Nexus using xda app-developers app

I have never been "in" the USB port area when taking apart my i747, I would assume it would be visible...but you should try the suggestion of USB drivers from the poster above
Sent from my GT-I9300 using xda app-developers app

my suggestion would be to download the samsung s3 drivers. this worked for me.

dizzy929 said:
If the USB port were damaged, would it still charge fine?
Click to expand...
Click to collapse
In some cases, yes. Charging operation only needs the positive and negative 5 volt pins on the usb bus. In order to transfer data ( and be recognized by the host OS) you must also have connection across the two data pins. It is possible that one of the data pins on the phone's connector OR either end of the micro usb is bent, broken, or otherwise not making connection. Also i have about a hundred (more like 10 but you get the point) micro usb cables laying around and some will ONLY charge. I can't give you a scientific explanation why other than the phone just doesn't like some of them so trying a different micro usb could be the key.

jremenak said:
I had a very similar problem with my i747. If your phone charges when it's plugged in to the USB port of the computer, you might try this:
Make sure the Samsung drivers are installed. Power off your phone. Power on the phone in Download mode. (Volume Down + Home + Power) Press Volume Up to continue. Once it's in Download mode, plug it into your computer. Windows should now discover it and load the driver. Once this is complete, unplug the phone from the computer, and pull the battery out of the phone to get out of Download mode. Replace the battery, and power on the phone like normal. It should connect to the computer properly.
I found this on the Verizon S3 forums over on Android Central. Worked for me after a lot of other things didn't.
Best of luck!
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Tried the download mode on both Windows, ubuntu and Mac and unfortunately it still remained unrecognized.
jmah10 said:
my suggestion would be to download the samsung s3 drivers. this worked for me.
Click to expand...
Click to collapse
Tried the newest drivers and even an older set but neither worked.
dntesinfrno said:
In some cases, yes. Charging operation only needs the positive and negative 5 volt pins on the usb bus. In order to transfer data ( and be recognized by the host OS) you must also have connection across the two data pins. It is possible that one of the data pins on the phone's connector OR either end of the micro usb is bent, broken, or otherwise not making connection. Also i have about a hundred (more like 10 but you get the point) micro usb cables laying around and some will ONLY charge. I can't give you a scientific explanation why other than the phone just doesn't like some of them so trying a different micro usb could be the key.
Click to expand...
Click to collapse
Like you said, I think that sometimes a phone not liking a cable is the truth. What sucks is I never had this problem with my s2 skyrocket on any cable. I may have to send it in for repair if anything. I upgraded to 4.3 last night and still the same so I feel it's definitely a hardware problem.
P
Thanks for all the suggestions, guys.

[Q] Tearing my hair out trying to connect this thing, please send some help my way

So I have a SGH-I747M... recently came into my possession, existed for not sure how long. In any case, I'd love to just jump in and explore what genius this forum has to offer, but I've run into one small tiny problem - my phone isn't getting detected by my computer when plugged in.
It charges, but it doesn't get detected as a device.
Things I've tried:
USB Debugging (on and off)
3 different USB cables
Every single port available on my PC chassis, including the ones that are connected directly to the mobo
Uninstalling and reinstalling the drivers for the S3 from Samsung's site
Pulling the battery
Resetting the battery
Restarting phone
Restarting computer
Connecting during Download Mode
Towelroot (it says for all three options "this device is not supported")
Setting through *#0808# MTP and MTP+ADB
Trying a different computer
The cables I've used are all five pin, so its not something as simple as "oh haha im using the cable that doesn't have a data pin"
To be clear, nothing has appeared in Device Manager, and nothing pops up in Computer when I plug it in.
Anything I might be missing? I'm sorry if I've sounded rash or rude in this post, I've spent the last two days trying to diagnose this problem.

It's possible the USB port is defective.
Did you try another computer?

It might be possible that the port is defective, I assume the device charges if so then try a otg item see if the phone sees it
Sent from my Nexus 7 using Tapatalk