Police said it happened June 4 at the Don Mills station. A man got off the bus and entered the station when he got into a verbal altercation with two people.
The two allegedly physically assaulted the man and then grabbed his cell phone, police said.
The victim was taken to the hospital for treatment.
On Sunday, police released descriptions of the male suspects. The first is described as five feet eight inches tall with a slim build and was wearing a mask, a black jacket with a white horizontal stripe, blue jeans and black and white shoes.
The second suspect is described as five-foot-six with a thin build and was wearing a blue coat, blue jeans and a Montreal Expos hat.
Police are asking anyone with information about the two suspects to contact them at 416-808-3300 or Crime Stoppers anonymously.