POLICE in remote areas of Victoria are urging motorists to be careful when navigating by their smartphone.

Police in Mildura claim Apple iPhones operating on the iOS 6 system have mistakenly directed a number of motorists off the beaten track in recent weeks.

Police say they have been called to assist distressed motorists who have become stranded within the Murray-Sunset National Park after following directions on their Apple iPhone.

Tests on the mapping system by police confirm the mapping systems lists Mildura in the middle of the Murray Sunset National Park.

The park, Victoria's second largest, has very little permanent water supplies and temperatures can reach as high as 46C in the middle of summer.

"Some of the motorists located by police have been stranded for up to 24 hours without food or water and have walked long distances through dangerous terrain to get phone reception,'' a police spokesman said.

Police have contacted Apple in relation to the issue and hope the matter is rectified promptly to ensure the safety of motorists travelling to Mildura.

"Anyone travelling to Mildura or other locations within Victoria should rely on other forms of mapping until this matter is rectified.''