What do you use more when developing an application for Android - an emulator or a real phone?

Question

Android

Now I am actively developing applications for android and I constantly use debugging under a real phone in order to better "feel" the interaction interface. Although you have to wait longer for installation at startup.
Is this a normal practice or no one does this?

Answer 1

and I constantly use debugging under a real phone

... exactly until you need to check your sub^W application for 100500:

• screen resolutions
  
• screen sizes
  
• screen aspect ratio
  
• pixel densities
  
• api versions
  
• younameit
  

Answer 2

And the emulator does not suit me at all. Working with bluetooth and USB device :(

Answer 3

only real device :)