Is there a difference regarding UX between those both styles of mobile menu display: (one appears one the left side, other on the full width vertically)
This one above is the kind of navbar that Twitter Bootstrap provides:
On the other hand, Facebook mobile app, for instance, uses this left-style:
As my application is based on Twitter Bootstrap 3 (HTML5), I use natively the first solution.
However some lambda users (non-UX guys at all) came to me and said:
"Hey! You should try to put the menu on the left, it's the trend !!"
But I strictly don't see the extra benefit... What could it be? Should I really change it?