The short version

Key points

  • Telstra says its predicted coverage footprint remains more than 2.14 million square kilometres under the new standard.
  • The new ACMA framework uses four categories: good, moderate, basic and no coverage.
  • Telstra argues that some areas labelled no coverage still provide usable service to customers.
  • The ACMA’s position is that coverage maps should show service people can reasonably rely on, rather than occasional or technically possible connections.
  • The change affects how coverage is represented, not whether Telstra has physically removed towers or reduced the network itself.

What changed on Telstra’s coverage map?

Telstra’s claimed mobile coverage footprint has been reduced by almost 1 million square kilometres following new rules from the Australian Communications and Media Authority (ACMA). The change is about how coverage is measured and displayed, rather than a physical reduction in Telstra’s network.

Under the previous approach, a weak or intermittent signal could be included as coverage. The new national standard requires mobile providers to distinguish between service that is usable and service that may only work in favourable conditions. As a result, some areas that previously appeared covered must now be marked as having no coverage.

The four new coverage categories

The updated maps use four categories: good, moderate, basic and no coverage. Good coverage is intended to represent normal outdoor mobile use, including voice, SMS and data. Moderate coverage should support stable everyday use, although data-heavy activities such as video may not perform perfectly.

Basic coverage means calls and text messages should generally work, but data may be slower or less reliable. No coverage indicates no, or very limited, predicted service. The category does not necessarily mean a connection is impossible in every circumstance; it means customers should not reasonably rely on service there.

Telstra remains the largest network by predicted area

Despite the reduction, Telstra says it still has the largest predicted coverage footprint in Australia. Under the new rules, Telstra’s footprint is stated as more than 2.14 million square kilometres, compared with 1.2 million square kilometres for Optus and Vodafone.

The map change therefore does not mean Telstra has lost its overall coverage lead. It changes the way the edges of that coverage are described, particularly in regional and remote areas where signals can be weak or inconsistent.

Why Telstra disputes the new classifications

Telstra says the revised maps do not reflect what many customers experience in areas that are now shown as having no coverage. The company says around 1.5 million customers use its network each month in places that may now receive that classification. It also says tens of thousands of triple-zero calls have historically been made from those areas.

That argument highlights the difference between a signal being technically available and a service being consistently dependable. A phone may connect in a particular location, with a particular device, or under favourable conditions, without providing reliable everyday coverage. Telstra’s position is that the new standard may be too conservative and could hide areas where service is possible.

Why the maps matter

Coverage maps influence decisions about mobile providers, homes, farms, remote work, travel and safety. This is especially important in regional Australia, where mobile service can be relevant to business operations, emergency communication and driving on remote roads.

The ACMA’s position is that maps should give customers information they can reasonably trust. Showing occasional service as ordinary coverage could create a false impression that voice, messaging and data will work reliably. The new categories are intended to make that distinction clearer.

TechManPat’s conclusion

Pat’s view is that the regulator is mostly right: I think coverage should mean usable service, not a signal that might work only under perfect conditions. Telstra’s towers have not suddenly disappeared, but the map is now separating dependable coverage from service that may only work occasionally. Customers should therefore treat the updated categories as a guide to reliability, rather than assuming every visible signal will support normal phone use.
Source note

This knowledge-centre summary is based on the linked TechManPat video and reflects the information available when it was published. Check current pricing, availability and policies before acting.