.dev works on emulator but not on device.

[glanster]

Hi,

I downloaded the .dev version and imported it into Android Studio. I can test the app on the emulator and apparently it´s working ok but once I change to test it on a device it starts installing but after a few seconds it stops with an error message. After that the app is installed but with an Icon with a "PB" logo (not the calculator). If I try to execute that app it starts installing but interrupts again the process.

I´m new to Android so I´ll appreciate any help you can give me.
Thanks!