Telstra Group will implement changes to its mobile plan pricing. The adjustments will affect postpaid mobile plans from Aug. 27 and pre-paid mobile plans from Oct. 22.

Prices on most mobile plans will increase by between $2-$4 per month.

The decision follows Telstra's earlier announcement that it would not be increasing prices in July as it revised its customer terms for postpaid mobile plans to eliminate the annual CPI-linked price review.

"Telstra has balanced cost of living pressures it knows some of its customers are experiencing, with its need to continue to invest to manage technology evolution and continued strong customer demand on its mobile network," said Telstra CEO Vicki Brady.