Android Studio Doesn't See Device [Closed]

I recently had trouble with this, and regardless of what I did(restart adb, edit adb_usb.ini, restart computer+device+swap usb port, reinstall studio etc. etc.) I just couldnt get it to work, and could not even detect my device using 'adb devices'. Finally after about 2 hours of googling and testing, someone suggested switching to PTP instead of MTP on my device. When I did this I got a popup on my device asking me to allow my mac access and suddenly everything worked(had to restart studio for it to show up there as well though).

I might be bumping this thread now, but it is the first result on google search, and I had a lot of trouble finding an answer for this problem, so I thought this should be added as a solution.

On your device:

Go to settings/ developer settings/ allow USB debug mode

If 'allow USB debug mode' option is disabled. Then you might have the device currently connected to your PC. Disconnect the device and the option should now be available

Note: On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.

If it still doesn't help, you can google it with this expression:

How to enable developer options on YOUR_PHONE_TYPE

Just in case it saves anyone 5 minutes of head-scratching, 'Developer options' is now under 'Settings/System & updates/Developer options'

Some cables can not been used for developer mode or transfer file. A solution would be change your cable and don't waste time.

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Edited

Some USB3 ports are causing issues too. Not sure if there is a way to check if the cable/usb works. But there is a way to detect the USB type USB2 or USB3? . If you are using USB3 could be a port issue too.

I had to killall adb because somehow, Android Studio managed to crash and did not want to communicate with adb anymore. Thus, my device did not show up.

So quitting Android Studio, terminating all adb instances in Terminal and starting Android Studio again (should ask if it should enable debugging then) worked.

After spending some time I found the problem was to enable USB debugging option to on. Just find in your mobile Settings->Developer Option->USB debugging. Just enable it and it works. It might help someone!

It works for me by following steps below:-

If you using Windows, the device won't show up because of driver issue.

Go to device manager (just search it using Start) and look for any devices showing an error. Many androids will show as an unknown USB device and comes with exclamation mark. Select that device and try to update the drivers for it. for update part follow the link:universal adb

But before that, you have to update your sdk manager and make sure Google USB Driver package is installed.

When done, the driver files are downloaded into the \extras\google\usb_driver\ directory. Hints: Search "android_winusb.inf" under Windows Start and Open File Location to get the directory mentioned.

Open up your device manager, navigate to your android device, right click on it and select Update Driver Software then select Browse driver software. Follow the file location path previously to install Google USB Driver.

Restart Android Studio and Developer Options in your android device and reconnect USB.

Cheers !

In my case the following steps helped to resolve the issue:

1) Ensure the package "Google USB Driver" is installed in Android SDK Manager

2) Download "ADB Driver Installer 2.0" from here

3) Run the tool downloaded and connect your smartphone; in my case it showed that the driver had been installed incorrectly and suggested to fix it

After those steps my Android Studio instantly recognised the device! Both MTP and PTP started to work.

Tested for Samsung (Android 4.1.2) and Xiaomi MI4W (Android 4.4.4)

My Nexus 5 phone did not have developer options in the settings menu. I had to do the following:

On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.

In my case

android studio suddenly stop seeing my device

I fix it by change USB option to Media device (MTP)

how to get USB option from storage USB Computer Connection

check Debugging from developer options

try re-run on device , it should work

issue

USB option was charge only

UPDATE ANSWER 26/7/2016

there many reasons like not enabling developer mode --> USB debugging(if you dont see developer option click 7 times at build number )

but I face another issue every thing was works just fine suddenly android studio cant see my device

to fix this issue you need to restart adb , from terminal

adb kill-server
adb start-server

or from ddms

in devices section --> click at small arrow down --> restart adb

I plugged my phone in and it was detected fine (no need for device manager or anything like that).. but Android Studio wasn't seeing it.

I found it takes two requirements to be met

- PTP (not MTP)
- USB Debugging mode on

For PTP , go to settings..storage..usb connection..PTP (For MTP/PTP , maybe on my nexus it's there, but on my doogee I see it under 'developer options' .. then under networking , above input, it says "select usb configuration")

For USB debugging, settings..about..tap build about 7 times, then a new option appears for usb debugging and you can turn it on.

Added this is also relevant for USB debugging or MTP/PTP being moved

Try the following solutions (for Windows):

• Go to your sdk tool installation path, and under \sdk\platform-tools folder and run this command:

  adb devices

If your device it listed it should show something like this:

C:\android\sdk\platform-tools>adb devices
List of devices attached
081e96500591f039        device

If not, follow this:

• Try these commands:

  adb kill-server

  adb start-server

• Make sure your phone has Developer Options in Settings (if not, go to Settings, About phone (or device), click on Android Version multiple times until you see a message).

• Make sure USB debugging on your phone is enabled (go to Developer Options in Settings and turn it on)

• Make sure you have Select USB Configuration set to MTP (this is also in Developer Options).

• Make sure you can see your files in your device in Windows Explorer when you connect via USB.

• Make sure you have the driver for your device properly installed (most of the time, this happens when you first plug in your USB cable).

• In Windows, right click on Computer, and go to Device Manager, check if you have Android Device right on the root folder and under it should be Android Composite ADB Interface. If you don't have this, you have to download the Google USB Driver. Get it here:

• In Device Manager, find your device (should have yellow Exclamation point), right click, and update driver (open the folder with the driver you just downloaded)

• If this doesn't work, try restarting Android Studio or plugging your device back in again.

Some cheap devices (some $30 tablets) don't provide the USB drivers to connect in Device Manager, so in this case you are out of luck.

I have found that what works for me is:

• CD to your sdk platform-tools folder

• Check if adb sees your device

  ./adb devices
  

• If it displays 'List of devices attached' and a blank line below, then restart adb as follows:

  ./adb kill-server
  ./adb start-server
  

  then re-run ./adb devices and see if it picks up the device, eg as follows:

  List of devices attached
  015d2bc285601c0a device

UPDATE 2020 Nov 27

One more reason is your cable which might be broken (only charging is available but not debugging). Hence, buy a new one! ^^

Known that "Can't connect a device with Android Studio" is such an annoying issue to newbies, but I'm kind of an old hand at Android for a quite long time. Most of the common methods have been tried:

• How to turn on developer mode.
• Forgot to enable USB debugging.
• Sometimes need to switch USB configuration to Transfer Files.
• Some subliminal guides on adb commands, which I've never tried, though.
• Try a new cable. ...

HOWEVER, what works for me is to REVOKE ACCESS again for the computer your device will connect to, namely:

1. Go to Developer options.
2. Revoke USB debugging authorization.
3. Wait a bit for a dialogue to show up and ask your access consent.
4. Bang, there you go, your device is listed in Android Studio.

If your phone was working previously

Before you do anything complicated, this might be a simple problem. Just unplug and plug back in.