Ng-ionic does not work when simulating Ionic app on phone/emulator

I am building an Ionic app that presents a form for the user. For one particular field, I’d like to have it such that the user enters data on the field and an event triggers once the user taps anywhere else.

I went for ng-blur and applied it to the tag. Testing it on the browser works perfectly well, however when I simulated the app on the phone, tapping anywhere else did not make any difference. What could be the reason?