A woman in her fifties was robbed by two cyclists while she walked using her mobile phone in Walton.
She fell and cut her chin and knee as the Samsung Galaxy S3 mini was snatched from her hand.
It happened at 10.55am on Wednesday while the victim was walking along the Redway near Heron Gate School on Lichfield Down.
The offenders carried on cycling.
They were white teenage boys with short brown hair, one was wearing a baggy yellow t-shirt and the other was wearing a red t-shirt. Both were riding on pushbikes.
Anyone with information regarding this incident please contact PC Alistair Thorne from Milton Keynes police station on the non emergency enquiry centre number 101.
If you don’t want to speak directly to the police, you can contact Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.