Tonight around 6 PM my wife was attacked after leaving the Q train on Park between vandy and Flatbush. Two kids, late teens, possibly early twenties - one grabbed at her iPhone and scratched her hand while the other backed him up from behind. She screamed at them and fended the kid off, and then his friend sidled up to her and the two of them attempted to trap her but she cursed them out and got across the street. From there, the two of them just lingered, chuckling, and eventually walked around the corner to Flatbush together.
The street was typically busy and no one helped out, although there was little anyone could have done. She was carrying her phone, but not displaying it or doing anything flashy. She WAS carrying a purse and a laptop, but they instead went for the phone only.
She gathered her wits and waited for the police at the dry cleaners, and eventually went to the precinct to make a full report. While there, she met another man who was robbed in his building vestibule on Butler shortly before, presumably by the same thugs.
This was dusk, but at a busy time of day, on a pretty busy street. These kids were clearly working as a team and looking for easy marks, but they were also easily scared off. Keep your wits about you and your eyes open.