I am developing an app specifically for my dad's phone which is in a different country than I am. So far, I have only run the app through Android Studio's GUI build and run buttons. But this only works for my local test phone, not for his device - since it's not physically in the same place.
What are my options? Obviously, I can publish it to the Play store and he can download from there, but this presumably involves a lot of overhead paperwork. So this is not ideal. Is there an alternative?
Do I already have a built APK that I could simply send to him in an email for him to install with a few taps? If so, where can I find it? Or what do I need to do to get there?
Alternatively, could I do wireless ADB install by connecting to the phone's IP as I do when I'm on the same WiFi network? Is this possible as long as the specific port is forwarded by the router? Or do I need to do anything else?