The incident happened back on Dec. 15 around 3 p.m.
According to police, the boy was standing in front of 597A 4th Ave. when he was approached by the man, who then grabbed him by the hood of his shirt and dragged him while forcibly removing his cellphone.
Police say the suspect then fled on foot southbound along 4th Avenue.
No injuries were reported or incurred.
Anyone with information is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477). The public can also submit their tips by logging onto the CrimeStoppers website.