Yes once. My second day in Barcelona.
We were in a large group at the back of a restaurant. We were pretty much the only ones there eating as well. Some girl disguising herself as a beggar just came waltzing in and put a sign down over my plate. We shooed her off but it took another 20 minutes for me to realize that she had put her sign directly over my phone, and ended up swiping it.
That's what happens when you're so used to setting your phone down on the table. Anyways we were only there for another 3 days I think and 2 other people in our group got pickpocketed. After that, our study abroad program just wrote off returning to Barcelona.