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USB Problems

My computer for some reason reminded itself of not recognizing my Idol 3 5'5 6045k. Two days ago it was all fine and now everytime i connect it to the computer it only charges. I've tried everything from changing usb cables to unistalling andthen installing the device drivers, enabling debugging, restaring either smartphone and computer. Everything I can think of. Please help me out, I'm trying to root the smartphone and without it recognizing I can't do anything, not even transfer files. :crying:

sdfg said:
My computer for some reason reminded itself of not recognizing my Idol 3 5'5 6045k. Two days ago it was all fine and now everytime i connect it to the computer it only charges. I've tried everything from changing usb cables to unistalling andthen installing the device drivers, enabling debugging, restaring either smartphone and computer. Everything I can think of. Please help me out, I'm trying to root the smartphone and without it recognizing I can't do anything, not even transfer files. :crying:
Click to expand...
Click to collapse
Obvious Question #1: Did you check the phone notification dropdown area to verify the phone is in MTP or PTP mode so it will show up on the pc? As for transfering files...you do have the option of loading up a microsd card with whatever files or installing a wifi adb app to connect wirelessly. You could even use an app like airdroid to let you do all sorts of things.

famewolf said:
Obvious Question #1: Did you check the phone notification dropdown area to verify the phone is in MTP or PTP mode so it will show up on the pc? As for transfering files...you do have the option of loading up a microsd card with whatever files or installing a wifi adb app to connect wirelessly. You could even use an app like airdroid to let you do all sorts of things.
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Therre's no notification after connecting the usb, it just charges the phone, seriously, I've tried everything to enable MTP but nothing does the job. And what do you mean by using an adb app? Can I root my smartphone by a wireless connection?

sdfg said:
Therre's no notification after connecting the usb, it just charges the phone, seriously, I've tried everything to enable MTP but nothing does the job. And what do you mean by using an adb app? Can I root my smartphone by a wireless connection?
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You are overcomplicating things. 1st...there is ALWAYS a notification in the dropdown that says what mode the phone is in....mtp, ptp, charge only or "cdrom mode" which installs the usb drivers. Pressing on that notification allows you to change the mode the device is in.
As for rooting....all you need to do that is to flash or boot TWRP (details on booting it are in the system image thread) and then flash the supersu zip from inside twrp to your device...reboot and done...but I think in the newer TWRP's they even offer options to root automatically...ie the zip is already built in. After rebooting to your phone you install the supersu apk from google play so you can configure what apps have superuser access.

famewolf said:
You are overcomplicating things. 1st...there is ALWAYS a notification in the dropdown that says what mode the phone is in....mtp, ptp, charge only or "cdrom mode" which installs the usb drivers. Pressing on that notification allows you to change the mode the device is in.
As for rooting....all you need to do that is to flash or boot TWRP (details on booting it are in the system image thread) and then flash the supersu zip from inside twrp to your device...reboot and done...but I think in the newer TWRP's they even offer options to root automatically...ie the zip is already built in. After rebooting to your phone you install the supersu apk from google play so you can configure what apps have superuser access.
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I'm telling you, everytime i try to connect my smartphone to the pc nothing shows up, i only notice the device is charging, there's no option anywhere to change it to MTP or Camera or CD ROM... And I've tried 2 different pc's

sdfg said:
I'm telling you, everytime i try to connect my smartphone to the pc nothing shows up, i only notice the device is charging, there's no option anywhere to change it to MTP or Camera or CD ROM... And I've tried 2 different pc's
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Click to collapse
Your telling me when the phone is plugged into the pc you don't see the notifications below or some version of them at all? If so then you need to fully uninstall the devices in device manager including remove the drivers...then use the drivers in the system image thread (since you obviously can't use the ones from "cd rom mode" which would be the best solution). USB debugging isn't even an issue yet...your phone should still show up to the pc as a camera device (ptp) under just about ANY scenario using even built in windows drivers.

famewolf said:
Your telling me when the phone is plugged into the pc you don't see the notifications below or some version of them at all? If so then you need to fully uninstall the devices in device manager including remove the drivers...then use the drivers in the system image thread (since you obviously can't use the ones from "cd rom mode" which would be the best solution). USB debugging isn't even an issue yet...your phone should still show up to the pc as a camera device (ptp) under just about ANY scenario using even built in windows drivers.
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Thanks for all those tips, but I already tried that out aswell, 2 times to be precise, deleted all the drivers, rebooted pc and smartphone, tried different cables, but still nothing ever occurs.

sdfg said:
Thanks for all those tips, but I already tried that out aswell, 2 times to be precise, deleted all the drivers, rebooted pc and smartphone, tried different cables, but still nothing ever occurs.
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Have you tried a different cable? Perhaps that one is damaged or is only setup for charging? Only thing I can think of.
And then I realize you mentioned that Not sure what else would prevent it from giving you those options.

I'm also facing similar issue after the 2 update. Were you able to fix this?
http://askubuntu.com/questions/681959/ubuntu-14-04-15-10-android-file-access-issue?s=2|0.2054

Which kind of USB cable(s) have you tried specifically? Were they cheap eBay/generic kinds or well known branded ones?
Something as little as a Micro USB cable can cure a lot of problems. It needs to be a well built one by a known manufacturer to avoid problems.

brian117 said:
Which kind of USB cable(s) have you tried specifically? Were they cheap eBay/generic kinds or well known branded ones?
Something as little as a Micro USB cable can cure a lot of problems. It needs to be a well built one by a known manufacturer to avoid problems.
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Click to collapse
Actually I've been having pretty good luck with the $1 ones from Dollar Tree but the key is certainly to try multiple cables....on some the microusb plug will make it difficult to get a solid connection especially if you have a case on the phone.

You may be missing the point of "trying" different cables. It's not so much the "quality" of the cable, it's the fact that some cables are for "power only", and "will not" transfer data, regardless of how hard you try.
You need to be using a "proven" data/power cable, otherwise your beating your head against the table for nothing.
Just to add, I put a piece of red tape on all my usb cables that are power only, no guess work.

I own idol3/moto g 2015 and s3, have no problem with other 2 device. I'm having this MTP issue after the UE40 update. Verified in all 3 OS, adb is detecting the device but not MTP/PTP. Idol3 support is not worthy responses.
http://forum.xda-developers.com/idol-3/general/mtp-issue-ue40-update-t3182564
http://askubuntu.com/questions/681959/ubuntu-14-04-15-10-android-file-access-issue

KashRaman said:
I own idol3/moto g 2015 and s3, have no problem with other 2 device. I'm having this MTP issue after the UE40 update. Verified in all 3 OS, adb is detecting the device but not MTP/PTP. Idol3 support is not worthy responses.
http://forum.xda-developers.com/idol-3/general/mtp-issue-ue40-update-t3182564
http://askubuntu.com/questions/681959/ubuntu-14-04-15-10-android-file-access-issue
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Well, USB works fine here, and I've had 5 different rom's, 2 Canadian, 2 US, and the Chinese rom, on this phone without any USB issues, sorry, can't help any further.

After a complete wipe and restore, it worked.

sdfg said:
My computer for some reason reminded itself of not recognizing my Idol 3 5'5 6045k. Two days ago it was all fine and now everytime i connect it to the computer it only charges. I've tried everything from changing usb cables to unistalling andthen installing the device drivers, enabling debugging, restaring either smartphone and computer. Everything I can think of. Please help me out, I'm trying to root the smartphone and without it recognizing I can't do anything, not even transfer files. :crying:
Click to expand...
Click to collapse
I had the same problem as well. It only showed charging when I plugged in the USB cable. Tried switching cables, turning off and on USB debugging but nothing worked. I finally just rebooted the phone and then it worked again. Strange that it suddenly stopped.

I have a different issue; the different USB modes work fine but I don't have the 'cdrom' option in the USB mode dialog. I've tried various Alcatel ADB drivers that I have found and none are working, using Win7 64. My Idol 3 4.7 is 6039I (US).

Answered my own question, simply install the Mobile Upgrade Q software.

nope, doesn't show up. it's a bug. i had it before, googled until i found a fix and got it working, now it's back to not being recognized. nothing shows on drop down menu.

No USB Connection

Today, looking at the storage left i noticed i had only 12.55 instead of ~25 (my N5 is the 32gb model) and i tried to reset the device following a guide. Easy, right?
No.
The device didn't connect to usb, i tried 3 different cables, on 3 different pcs, with and without drivers, uninstalling and reinstalling them, even reinstalling windows on a machine. Nothing.
I thought it could be the OS, so i changed rom(i put on Cataclysm 6.0.1) but the situation was still the same.
I even tried to mount the storage in TWRP but no signal at all.
Not even fastboot. Only charge.
You are my only hope, please help me.

What guide did you follow? A factory reset is not called for yet.

rdmunn said:
What guide did you follow? A factory reset is not called for yet.
Click to expand...
Click to collapse
http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
second post, how to turn back to 32GB.
https://productforums.google.com/forum/m/#!topic/Nexus/6lMKqYYXpXw
here some suggestions on the usb ploblem, didn't work.
I also tried the driver guide from NexusRootToolkit, resulting in a 30 second connection recognized by the phone but not by the PC, a laptop running Win8.1.
i didn't include 3 other threads on XDA that redirected everyone to a common troubleshooting.

While plugged in, swipe down from the top and change usb charging to usb for file transfer.
Is that what you are wanting?

rdmunn said:
While plugged in, swipe down from the top and change usb charging to usb for file transfer.
Is that what you are wanting?
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Click to collapse
There is no signal AT ALL, no choice between charge and MTP, no devices in Device Manager on windows, nothing.
I tried turning on debug usb, no signal.
Tried forcing MTP in developer settings, nothing.
Only one single time i heard the classic windows sound telling me a device was plugged in but there was no phone on file explorer and the phone was only charging.
It's only charging now.
UPDATE: turns out the FLEX connector is the real problem since the screen went full retard and now looks like this http://forum.xda-developers.com/google-nexus-5/help/nexus-5-screen-colorful-static-t2600032

New modal dialog appears when connected to USB in car

Ever since the Oreo update my phone displays a modal dialog when I connect to the USB port in my Subaru for charging. The dialog suggests that the phone resources can't be accessed and that I should download a samsung app (the one you use to port data to a new phone). All I want is to charge the phone like I've been doing for the past 6 months. It's inconvenient because I have to wake up the phone and hit OK to dismiss the dialog box. Is there any way to tell the phone to just use the USB for charging only by default? I tried changing to charge phone only in the drop down notification panel but it doesn't stick for the next session. I looked through the very extensive list of settings and couldn't find anything relevant. I know that I could try to find a cable that offers charging only or perhaps connect the phone to a cigarette style charger. These are inconvenient as I already have the appropriate USB-C cable and charging port. Am I missing the setting or solution? Thank you.

Here is a picture of the annoying message that recently appeared on my phone after updating the OS. The message appears when connecting my phone to my car's USB port for charging. Does anyone know how to stop this message from coming up? Thanks.

Have you tried plugging it in, acknowledging the popup, then switching usb mode to charge-only? It should remember that mode for future plug-ins.

xpersimmon said:
Here is a picture of the annoying message that recently appeared on my phone after updating the OS. The message appears when connecting my phone to my car's USB port for charging. Does anyone know how to stop this message from coming up? Thanks.
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I get that same message when I plug into the airplane media system USB to charge. I just switch USB option to charge and it goes away.

eregev said:
Have you tried plugging it in, acknowledging the popup, then switching usb mode to charge-only? It should remember that mode for future plug-ins.
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Click to collapse
I tried the same thing to see if it would work and it doesn't save your preference. Tested via both the notification and via developer options.

mjones73 said:
I tried the same thing to see if it would work and it doesn't save your preference. Tested via both the notification and via developer options.
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Click to collapse
Let's see if it works for OP.

eregev said:
Have you tried plugging it in, acknowledging the popup, then switching usb mode to charge-only? It should remember that mode for future plug-ins.
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Yes, good suggestion. I tried that but the setting isn't sticky (it asks everytime).

rsfinsrq said:
I get that same message when I plug into the airplane media system USB to charge. I just switch USB option to charge and it goes away.
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Click to collapse
Yes, extra fiddling with my phone in this way is inconvenient and unsafe while driving.

It is a rather inconvenient, and annoying, situation.

Drunkula said:
It is a rather inconvenient, and annoying, situation.
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Click to collapse
One of the things that bugs me about Samsung is that the number of settings available are enormous but many don't work the way I want.
This seems like a simple problem that was recently introduced. I guess I need a charging only cable....

My Pc Won't Recognize Vivo Nex S

Hey guys,
I have an issue that's been frustrating me. I can't connect my Vivo to my pc. I should be fine because I did everything. I uploaded the newest driver (I believe), I downloaded Vivo Assistant to
pc and I turned on USB debugging. When I put on the cable to the phone it does nothing other than charging.
Am I missing something? I'd appreciate any help!
Thanks1

Have you enable under developer setting-select usb configuration-media transfer protocol (MTP)??
By default it's only for charging,actually all the smartphone by default is charging selected and every user must change it to MTP and so pc can recognized it as hard drive.
Sent from my iPad using Tapatalk

paatha13 said:
Have you enable under developer setting-select usb configuration-media transfer protocol (MTP)??
By default it's only for charging,actually all the smartphone by default is charging selected and every user must change it to MTP and so pc can recognized it as hard drive.
Sent from my iPad using Tapatalk
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Yeah, I did actually. My phone is the global version. Can that be the issue?

Alaaddinsarac said:
Yeah, I did actually. My phone is the global version. Can that be the issue?
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Just to clarify situation.
Did you do what I've suggested and still your pc does not recognize your phone??
Did you tried different usb cable or different usb port on pc and still nothing??
This has nothing to do with global or any region parameter.
It's simple how every android device works.
Sent from my iPad using Tapatalk

See if when you connect to pc there's a message in notification center asking how you want to use USB connection. Select file transfer. You access this notification by sliding down from the top of the phone screen edge.
Also, unlock the phone before you connect to pc.

paatha13 said:
Just to clarify situation.
Did you do what I've suggested and still your pc does not recognize your phone??
Did you tried different usb cable or different usb port on pc and still nothing??
This has nothing to do with global or any region parameter.
It's simple how every android device works.
Sent from my iPad using Tapatalk
Click to expand...
Click to collapse
Yeah, I did what you suggested but sadly didn't work. I have used a different cable but haven't used a different pc. Maybe I should try that.

Saloei said:
See if when you connect to pc there's a message in notification center asking how you want to use USB connection. Select file transfer. You access this notification by sliding down from the top of the phone screen edge.
Also, unlock the phone before you connect to pc.
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Click to collapse
The problem is, I don't get a notification. I get nothing. It just starts charging.
Thanks for the help anyways!

Alaaddinsarac said:
The problem is, I don't get a notification. I get nothing. It just starts charging.
Thanks for the help anyways!
Click to expand...
Click to collapse
Remove MTP or your device from Device Manager and give it another go.

Can't connect to Windows 10 PC?

For some reason I can't connect my Pixel 4a to my PC with a USB C - USB A cable (or USB A - USB C, not sure what the official name is) , even though it worked fine on my previous phone.
Included with the phone is a USB C - USB A adapter, but I see no use for it unless you have a special USB A cable which I don't.
My motherboard does have a USB C slot on it and it does read my phone when I plug it in that way but for some weird reason it's really loose and doesn't stay connected unless I keep physical pressure on it.
I'm not going to update to Android 11 until the November update because I've heard the current build has a few bugs, but does anyone know if Android 11 fixed the USB C - USB A issue?

Have you made sure to switch to file transfer mode? It defaults to 'no transfer' mode when I plug into my laptop.

Most likely you need to toggle the phone connection settings to data transfer, originally it will be set to charge only I think.

WAusJackBauer said:
For some reason I can't connect my Pixel 4a to my PC with a USB C - USB A cable (or USB A - USB C, not sure what the official name is) , even though it worked fine on my previous phone.
Included with the phone is a USB C - USB A adapter, but I see no use for it unless you have a special USB A cable which I don't.
My motherboard does have a USB C slot on it and it does read my phone when I plug it in that way but for some weird reason it's really loose and doesn't stay connected unless I keep physical pressure on it.
I'm not going to update to Android 11 until the November update because I've heard the current build has a few bugs, but does anyone know if Android 11 fixed the USB C - USB A issue?
Click to expand...
Click to collapse
I had this issue too. Windows file explorer would just crash after one or two files and stop transfer, no matter the size and type. (Yes I had file transfer selected on my phone ?)
Then windows update gave me a driver called "Google Inc. - Other Hardware - Kedacom KDB Composite Interface". I also updated to the newest firmware on the phone. No idea which of these did the trick or if it was the combo. However. Smooth sailing now ??
Hope this helps
(If windows update refuses to give you the driver, you can get it from Microsoft's update catalogue online. A Google search will do)

Ok it's completely messed up. When I search for USB settings it doesn't let me change anything at all, even though when I first got the phone I could and I changed it to transfer files. EDIT: No actually the setting that I changed was a developer option called "Default USB configuration" which I changed to transfer files but that still did nothing.
I just plugged in my phone and looked for the USB setting in the notification area but it wasn't there, but I noticed an option called "manage"
I went in there and noticed this. (see attachments) it's locked to be off and I can't change it. Very odd.

WAusJackBauer said:
Ok it's completely messed up. When I search for USB settings it doesn't let me change anything at all, even though when I first got the phone I could and I changed it to transfer files. EDIT: No actually the setting that I changed was a developer option called "Default USB configuration" which I changed to transfer files but that still did nothing.
I just plugged in my phone and looked for the USB setting in the notification area but it wasn't there, but I noticed an option called "manage"
I went in there and noticed this. (see attachments) it's locked to be off and I can't change it. Very odd.
Click to expand...
Click to collapse
You're in notification settings. Try short tapping rather than long tapping to get the menu to pop up allowing you to select data transfer.
Changing default USB settings in developer options doesn't work for me either.

GoldElocks said:
You're in notification settings. Try short tapping rather than long tapping to get the menu to pop up allowing you to select data transfer.
Changing default USB settings in developer options doesn't work for me either.
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Click to collapse
My point is that the notification that normally comes up when you plug in your phone to a computer to change to data transfer, charge only ect ect isn't even coming up because the firmware is stopping that notification from coming up altogether and I can't change it so it does.

WAusJackBauer said:
My point is that the notification that normally comes up when you plug in your phone to a computer to change to data transfer, charge only ect ect isn't even coming up because the firmware is stopping that notification from coming up altogether and I can't change it so it does.
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Click to collapse
Almost certainly a cable or host port issue. Swap cables and see what happens. Same for hosts/host ports. You're not going to have toggling options if the phone does not 'see' all expected lines/pins.

I had the same issue and changed to a different cord to fix the problem.

You have an non certified cable it seems, I've confirmed this pixel 4a works with only certain cables for usb transfer, also the usb a to c cable you have will not charge the device as well.
Get a cable from know manufacturers like Samsung, it worked for me.

Yeah turns out it was a cable. Strange how my cable worked with my old phone but not with the Pixel 4a

Had this issue with my new 4a just now. Cable was fine, even used the new cable that comes with it using a Usb C to Usb A adapter. Nothing worked. Upon opening Device Manager I found a new device called 'Kedacom USB Device'. After trying random things, I decided to uninstall the current drivers by right clicking on it and clicking 'Uninstall device'. Suddenly the phone connected, and even showed the adb prompt.
So for anyone still facing this issue, hopefully this solution might help