Police say the phone is most likely a Rogers customer and has no SIM card.
Police are concerned someone received a new phone for Christmas and passed their old one off to their child without realizing that a 911 call can still be made on a cellphone with no SIM card or even no service.
The Sarnia Police Service is unable to obtain any subscriber information on the phone but is able to identify a location which is within a one-kilometer radius of Wellington and Stuart streets.
When the police communication centre answers the call, there is a garbled message. Operators believe the caller could be a small child or possibly someone with a disability.
The 911 call centre has received calls every day since Christmas Day. In total, 361 calls have been placed, 58 of them in on one day.