t is a new mobile phone system that promises to work anywhere and potentially help save lives in a disaster.Researchers have gone to extraordinary lengths to test it out in a remote desert wilderness in South Australia.In a landscape of deep valleys and rugged red ochre mountains, the tests have been a success.

They were carried out at Sillers Lookout, a lonely cliff that juts out like a long finger at Arkaroola in the Flinders Ranges.

Read more: abc.net