I have a Dell Vostro 3568 and am unable to connect my mobile phone to my PC using a USB cable.  Neither am I able to charge my mobile, nor to make file transfers.
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I have installed gMTP and tried to follow this tutorial to solve this problem:   But neither worked. I tried to connect both my phone (Nexus 4) and my dad's phone (Galaxy Note 2), and neither is being detected by Ubuntu. They don't show up on my files and on gMTP.  Is there another fix? or something more specific for Android 4.3 and Ubuntu 14.04
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On a Windows 8 machine, I've connected an iPhone 4s. Windows makes a audible chime for 'device connected', but doesn't allow charging in any USB port.  iTunes isn't installed, and cannot be installed at this time under corporate policy.  The iPhone shows as a generic device / toaster under Control Panel's Devices as below. The iPhone does NOT show as charging.  Is there a driver to install to ensure the iPhone is detected and can charge via USB without installing iTunes?  I've tried:   forcing Windows Update
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My phone doesn't have enough space to store backup files so I wonder if there is a way to do Nandroid backup and restore with files stored on pc.
72695
When my phone MOTOROLA G3(2015) is updated to Marshmallow, its not showing files when connected to PC. While connecting, it shows options as charing only, PTP, MTP, MIDI. When I select MTP, it shows the external card, but not showing the contents, where as internal memory is detected and all files are shown.
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I tried to take data from my pc to laptop. Both are using ubuntu 11.10 os. I googled and tried to connect both the systems. Now it is showing connected symbol. Dont know how to proceed further. I need to take data from my pc using this lan connection. Please provide me solution for this...
55935
I got the  in order to interface with an I2C peripheral through a USB port on my Windows 7 computer.  The VCP drivers seem to install correctly, and a COM port is assigned to the module, and can be opened by a terminal emulator. However, I cannot seem to get any signal in or out of the module. That is, I see no activity when I send data through the port, or receive any data when I connect an I2C device to it (this was debugged using a scope). I have also verified that the RESET isn't on.  I found very little helpful information out there on how to get this module to work, so if anyone has experience with it, or with similar FTDI modules, my question is: what are the steps that I need to take in order to get the module to communicate?
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I have a problem when I send my files from phone to ubuntu 12.04 via bluetooth as the phone prompts with the message "the file not sent"! I can send any files from ubuntu 12.04 to my android phone.
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I have an HP Chromebook and a Nexus 6P smartphone, and both of them use USB-C connections for charging.  When I plug the Chromebook into the Nexus's charging cable, it works fine and I just get a message that says I am connected to a "low-power charger".  However, is it safe to plug the cell phone into the laptop's power supply?  I'm afraid that doing so might fry the phone.
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Can I charge computers by inducing 5-volt into their USB connectors? Is this possible? I noticed that when my EeePC 900 is off but plugged in charger, there is power coming out of the USB port. Can this be a sustainable way of charging a PC, or a flaw in design?
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I have a lot of ports on my computer. I would like to turn off one of them, so when I connect my phone to that port, it only charges. I do want my phone to work with my computer in some occasions though, so I hope other ports are not affected.  I would just like to know how possible this is.
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If the host computer for an USB device doesn't provide enough power for a device which has no dedicated power port, can I connect the power-only-plug of a Y-USB-cable to an other computer, an USB-charger or even a regular mobile charger? I'm afraid this could damage some of the devices.  Edit: The device in question is a USB Hard drive (Samsung S2 Portable 640GB (but on the back it's written to use 0.85A)) which is supposed to work whit just a single USB port. It did so well on a other laptop and whit some cables even on my actual net book back in Europe. But now in Malaysia it works only some times (I still try to figure out what the conditions are) and then it stops working after a while (maybe when it goes to power save mode). I heard from others their hard drives need one more power plug here in Malaysia to but can't imagine why...
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When trying to import photos from my Galaxy S2 in Windows, it tries to import all image files on the phone (including application data), not just those in DCIM.   The system is Android 4.0.3. The phone is set to connect as a camera (but Windows Explorer can still see the full directory structure on the phone and SD card.)
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Recently my audio input, from USB headset and USB guitar cable have stopped working. Going into Windows 'Sounds' and enabling 'Listen to this device' outputs the audio as expected; the problem is not with the devices. However, as soon as I try to use them with any other program, discord, for example, no audio input is detected by discord.  I have tried everything I can think of and some suggestions from Googling around;   Updating everything - windows, drivers, all related software Rolling windows back to the last build Trying different USB ports Reinstalling drivers and software Running Windows troubleshooters Playing with device properties settings   But nothing seems to work, any suggestions?
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I have damaged the screen on my phone, so much so, it will not allow me to get the data to transfer onto my laptop. On opening Samsung Kies, it is saying that the connected device is locked. Please enter password on the connected device. I can only assume its the pattern lock they are referring to as I have managed to unlock the sim.  As I am unable to do this due to the screen being cracked, I wondered whether there is any other way of doing this, before sending the same onto my insurance company, as they are saying that I will lose all the data! Cant see why seeing as its just the hardware that is damaged and not the software.
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I have a Windows 8 PC and my Nikon D3100 isn't showing up on it. It says USB device not recognized. I have updated the USB drivers, but no joy. Sadly, i don't have the disc that came with it.
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I know about , but from all indications it is all about computer hardware.   Is there any Stack Exchange site where I can ask questions about problems on my phone?
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I have powerbank that provides 5v (presumably regulated) power, as typical of most usb interface powerbanks. I have been trying out my powerbank with different phones. It works on all except one. I have tried it with various USB cables, making sure I didn't overlook anything foolish. Then, I looked at the AC adapter of the phone that it didn't seem to be compatible with. The adapter read: 5.4v DC output. The device's official website or manual doesn't tell me what the input voltage should be. So I have the following questions   Is the fact that the device's AC adapter creates a DC 5.4v output enough to assume that, this is the correct voltage for my cell phone? If 5.4v is the input voltage, then when I attempt to power it with a 5v power bank, am I hurting it? Thus far, it just seems to be non-responsive when I try this. It seems another explanation is polarity mismatch. I'm aware that laptops have a polarity correction feature, which could explain why I can charge this phone via my laptop. Is there any other way to tell if polarity is an issue, given that I don't have access to detailed product information (unless the official website is updated, or something)   So that's the gist of it, I'm not sure why my powerbank isn't charging my phone. And I'm having difficulty troubleshooting the underlying problem by myself. Any tips big or small will be appreciated.