Couldn't find android device

Hi, I have run into a problem. I had my Nexus 7 drivers set up just fine and working properly with Unity3D, but then suddenly I get this error: “Couldn’t find android device”. Windows still recognizes Nexus 7 just fine, and I dont think I have made any changes, so now Im totally stuck. Anyone has any idea how to diagnose this problem?

Hey, I had the same problem but after I updated the driver of the nexus 7 on my computer,
the problem solved.

Link of driver :

If you are having trouble with detecting a device after a while of not building to it, you may need to update a few things via your Android SDK Manager.

  1. Open SDK Manager
  2. Check any tools API17 or API18 that shows as update avalible.
  3. Click Install package…

After the packages have been installed, try looking for your device again.

I happen to have the same problem a couple of months ago using some android devices. As it turns out, some drivers are not suffice to have unity a complete access to it. I search their site and it happens to have some sort of ‘PC Suite’ for file transfer and some other functionality. I installed it, restart Unity and it works.

Need to turn on developer options

Just install the drivers (PC Suite) on your PC and turn on USB Debugging on your phone and that would be it. It should work for all Android Phones.

Hope it helps.