Police are appealing for witnesses to an alleged robbery on Warren Road in Wickersley near Rotherham.
The attack at 5.30pm on Tuesday November 1 saw 30-year-old man assaulted by two men who took his Alcotel mobile phone.
The men being sought by police are described as white and aged in their early 20s. They are believed to be around 5ft 9ins tall, of slim build with short brown hair.
One of the men was wearing dark hooded top and matching bottoms with white stripes down the leg. The second man was wearing dark hooded top and blue jeans.
Both men covered their faces with scarves when the incident took place at the rear of Wickersley Health Centre, in which the victim sustained minor injuries.
Anyone with information is asked to call 101 quoting incident number 1367 of 1 November 2016.