2 women wanted for assault, robbery

Cops are searching for two women who they say are responsible for an assault and robbery. 
According to investigators, the suspects were caught on surveillance video punching a 24-year-old woman in the face and taking her iPhone. It happened in front of 1939 Grand Concourse back on May 29. 
The victim sustained some injuries, but refused medical attention. 
Anyone with information that could help police should call Crime Stoppers at 1-800-577-TIPS