Q:

run UI Tests xcode 7 on a device

Can I execute UI Tests on a physical device?
I have tried a few approaches/combinations with target/scheme but I am not able to run it on a device and I am getting no errors either.

A:

You have to enable Enable UI Automation at Settings / Developer

(maybe a restart is needed, as usual) :-) 

A:

Yes you can.  What is the real issue and what have you tried so far?  
You should be able to run the test simply by selecting your device from the device menu

then running your test by clicking the arrow by your test

Also, make sure your UI Target is pointing to your app:

