Yes, you may add that assumption to your report and make sure to include your justification/basis for comparison.
At this stage, I cannot confirm the exact areas without phone signal. Given the possibility that your project might be prototyped or implemented in the future, you may assume that their network coverage will improve (for example – Everyone will have access and upgraded to 5G).
Hope that helps.
EWB Australia acknowledges the traditional custodians of country throughout Australia and recognise their continuing connection to land, waters and community. We pay our respects to them, their cultures and their land; to Elders both past and present; and to emerging leaders. We recognise that the Aboriginal & Torres Strait Islander people never ceded sovereignty of what we call Australia.