Man's shack destroyed by River Murray floodwaters, but mobile phone survives

Matthew and Kylie Lehman were shocked to find the phone two months later. (Supplied: Kylie Lehman)

A South Australian couple's river shack might have to be demolished, but a phone lost in River Murray floodwaters has miraculously survived. 

Kylie Lehman's partner Matthew was canoeing along the River Murray to check on their Mannum shack in early December as waters began to rise.