I say "sort of", because it wasn't really violent, I wasn't injured, but rather two teenagers (I'd say roughly 17-18) came up to me, one asked if he could call his mom, I tell him that I'll call her on speaker phone, I unlock my phone, then his friend grabs my phone, the first guy shoves me, and they run away. I didn't chase after them because I had no idea if they had a knife or anything. [1]
That really sucked, I liked that phone, but the part that sucked worse was everyone felt compelled to give me a long victim-blamey lecture about how you can't trust anyone and that I shouldn't have unlocked my phone, and that they would never fall for anything like that. Usually I just rolled my eyes with this, but eventually one person wouldn't relent, constantly explaining that in NYC this is something you gotta know, despite the fact that I have lived in NYC longer than this person.
Eventually I responded back with "you know, I appreciate the lecture, but having empathy isn't a weakness you fucking moron. If I was stuck in Manhattan without a phone I would want someone to help me. I guess I just thought it was right to pay it forward. I'm sorry that you don't feel that way".
For some reason, that guy hasn't talked to me since.
[1] Before I get a bunch of suggestions, I did report the phone as stolen on the FindMy app, and I filed a police report with the IMEI.