3
As for the physical device: Is your phone Debug mode on? If it’s not, it won’t show up at all. To enable debugging you first need to enable the programmer mode on mobile. For this you can follow the guidelines of this link: http://www.techtudo.com.br/dicas-e-tutoriais/noticia/2014/10/como-ativar-o-modo-desenvolvedor-no-android.html After that, enter the programmer option that appeared in the settings and enable "USB Debugging".
If everything is ok on the device, probably your machine lacks drivers for it to recognize the phone. You can find the procedures for this in this link: https://developer.android.com/studio/run/oem-usb
As for the virtual device: Check if you created it correctly in AVD Manager, including if the Android version of the device is compatible with the minimum SDK version you chose.
You are trying to emulate on a physical or virtual device?
– Leticia Rosa
@Leticiarosa in both
– Vale
I put an answer. If you do not solve your problem comment with more information that I continue to help.
– Leticia Rosa