Android device is not connected to USB for debugging (Android studio)

Question

I am trying to debug my application using a real device instead on the emulator. When I try to connect, it gives me the message:

USB device not found<

Answer 1

I had tried restart the device, and it's work, popup and ask want to trust the mac for debug mode.

Answer 2

Try a different cable, ideally an official Samsung one.

I had tried a crappy USB cable I had lying around and then tried another which was Samsung and works perfectly now.

Not sure why they would be different though but worked for me.

Answer 3

If you are on windows, many times it will not recognize the device fully and because of driver issues, the device won't show up.

• go to settings
• control panel
• hardware and sound
• device manager

And look for any devices showing an error. Many androids will show as an unknown USB device. Select that device and try to update the drivers for it.

Answer 4

I had the same problem with connecting my Galaxy Nexus to win7 x64. I solved it by getting drivers, they can be downloaded from here or also via Android SDK manager.

Answer 5

Galaxy S7, I had to go to Settings, Developer Options and allow USB Debugging. This asked to approve computer it was attached to and it showed up instantly.

Answer 6

I am using Samung S8, I tried to install:

1. Intel Android Driver
2. Samsung USB driver

But the adb bridge driver was still missing. I finally got it to work by installing the Samsung Smart Switch application which is a media manager application.

Updated at 2018-04-20: If you are struggle with the driver, just use http://adbdriver.com/downloads/