Police are seeking information about a violent robbery in Gosnells last month.
A 22-year-old man was walking home from the train station on November 27 when he was approached by two boys near Wheatley Street about 12.35am.
He was punched in the face after he refused to hand over his mobile phone.
The victim then threw his phone at the boys before walking away towards Fremantle Road.
The offenders are described as 17 to 18 and about 178cm tall with dark skin.
Anyone with information should contact Crime Stoppers on 1800 333 000.