Android Adb Devices Does Not Detect My Phone

Android ADB doesn't see device

I tried all the ways listed on the web for a whole day, but I didn't get any solutions. Then, I followed a link and in just two minutes my problem was solved!

By the way, it's for Windows users!

Find out the vendor id of the device from device manager.

To do this, connect the OTG port to the USB port of your computer.

Go to Start Menu and right-click on “My Computer” and chose “Properties”.

Select the “Devices” option which will open “Device Manager”.

Select your device (mostly in USB devices or Other devices) and right-click and choose “Properties”.

Choose the “Details” tab and select “Hardware Ids” from the property dropdown, you can see the hardware id, in my case it was x2207 .

Open android_winusb.inf and add these lines:

;<Device name>   in our case I gave MK808
%SingleAdbInterface% = USB_INSTALL, USB\VID_2207&PID_0010&MI_01
%CompositeAdbInterface% = USB_INSTALL, USB\VID_2207&PID_0010&REV_0222&MI_01

Open C:\Users\.android\adb_usb.ini and add the following entry

0x<device id>  .. in our case it is 0x2207

Restart ADB by

adb kill-server
adb start-server

Now ADB should recognize the device.

Android adb devices does not detect my phone

install drivers for your device and enable developer mode for your device

Android device does not show up in adb list

Looks like the installed driver was in bad state. Here is what I did to make it work:

  1. Delete the device from Device Manager.
  2. Rescan for hardware changes.
  3. List item "Slate 21" will show up with "Unknown driver" status.
  4. Click on "Update Driver" and select /extras/google/usb_driver

Device Manager will find the driver and warn you about installing it. Select "Yes."
This time the device got installed properly.

Note that I didn't have to modify winusb.inf file or update any other driver.

Hope this helps.

adb not finding my device / phone (MacOS X)

Important Update : As @equiman points out, there are some USB cables that are for charging only and do not transmit data. Sometimes just swapping cables will help.

Update for some versions of adb, ~/.android/adb_usb.ini has to be removed.

Executive summary: Add the Vendor ID to ~/.android/adb_usb.ini and restart adb

Full Details:
Most of the time nothing will need to be done to get the Mac to recognize the phone/device. Seriously, 99% of the time "it just works."

That being said, the quickest way to reset adb is to restart it with the following commands in sequence:

  adb kill-server
adb devices

But every now and then the adb devices command just fails to find your device. Maybe if you're working with some experimental or prototype or out-of-the-ordinary device, maybe it's just unknown and won't show up.

You can help adb to find your device by telling it about your device's "Vendor ID," essentially providing it with a hint. This can be done by putting the hex Vendor ID in the file ~/.android/adb_usb.ini

But first you have to find the Vendor ID value. Fortunately on Mac this is pretty easy. Launch the System Information application. It is located in the /Applications/Utilities/ folder, or you can get to it via the Apple Menu in the top left corner of the screen, select "About this Mac", then click the "More Info..." button. Screen grab here:

System Information, Hardware USB tree

Expand the "Hardware" tree, select "USB", then look for your target device. In the above example, my device is named "SomeDevice" (I did that in photoshop to hide the real device manufacturer). Another example would be a Samsung tablet which shows up as "SAMSUNG_Android" (btw, I didn't have to do anything special to make the Samsung tablet work.) Anyway, click your device and the full details will display in the pane below. This is where it lists the Vendor ID. In my example from the screenshot the value is 0x9d17 -- use this value in the next command

echo 0x9d17 >> ~/.android/adb_usb.ini

It's okay if you didn't already have that adb_usb.ini file before this, most of the time it's just not needed for finding your device so it's not unusual for that file to not be present. The above command will create it or append to the bottom of it if it already exists. Now run the commands listed way above to restart adb and you should be good to go.

adb kill-server ; adb devices

* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
123ABC456DEF001 device

Adb Devices can't find my phone

I have a Samsung Galaxy and I had the same issue as you. Here's how to fix it:

In device manager on your Windows PC, even though it might say the USB drivers are installed correctly, there may exist corruption.

I went into device manager and uninstalled SAMSUNG Android USB Composite Device and made sure to check the box 'delete driver software'. Now the device will have an exclamation mark etc. I right clicked and installed the driver again (refresh copy). This finally made adb acknowledge my phone as an emulator.

As others noted, for Nexus 4, you can also try this fix.

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