Farmers and regional shire groups are worried the shutdown of 3G next month will leave them without phone signal, but Telstra says 4G coverage will be equivalent to the 20-year-old 3G footprint. Farmers and regional shire groups are worried the shutdown of 3G next month will leave them without phone signal, but Telstra says 4G coverage will be equivalent to the 20-year-old 3G footprint. Telecommunications Services Industry, Farmers, Mobile Phones Latest business news