A man fought back after two men pulled up in a car and tried to steal his phone.
Police are appealing for witnesses to the robbery which took place on Monday, February 4, between 9.25am and 9.40am in Orion Way, Kettering.
The victim was walking along Orion Way when he was approached by two men in a car.
They asked him for the time and when the victim took his mobile phone out, one of the men stepped out of the car and punched him.
A police spokesman added: “The victim them pushed the offender and put his phone back into his pocket.
“The offender then attempted to remove the phone at which point the victim punched the offender and ran off.”
Anyone with information about the incident is asked to call the police on 101.