The woman took the phone from a customer who was shopping at a supermarket about 3pm on April 19.
She took it from the bag when the customer left her trolley unattended and then left the area immediately afterwards. Police have released a CCTV image of a woman (left) they believe can help with their investigation.
She is described as light skinned, 18 to 21 years old, with a thin build and blonde hair. She was wearing a black hat, black singlet with number 21 on the front and back, long black pants and red runners.
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