Telstra has touted its regional credentials at its AGM, unveiling major new investments in 5G technology and mobile coverage.

Chair Craig Dunn told shareholders on October 14 the telco has poured $12.4 billion into its mobile network nationally over the past seven years, including $4.7 billion dedicated to regional areas.

An additional $800 million over the next four years will be spent on building "the most advanced mobile network," upgrading both 4G and 5G services in the regions, Mr Dunn said.

5G or "fifth generation" wireless technology is the newest standard for mobile networks, succeeding 4G.

The new investment follows the shutdown of the 3G network, which sparked connectivity problems for some customers .

Mr Dunn and chief exec Vicki Brady also touched on Optus's September tr

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