Australian number-one operator reported significant mobile revenue and subscriber growth during the second half of 2011.

The company’s domestic mobile business enjoyed revenue growth of 10.9 percent to hit AUD4.39 billion (US$4.74 billion) for the period. Telstra said that targeted offers and “simplified processes” have helped to control costs.

The company added 338,000 postpaid and 98,000 prepaid mobile customers during the period, along with 436,000 mobile broadband customers and 86,000 M2M connections, contributing to a total of 958,000 new mobile subscriptions.

It reported steady postpaid mobile ARPU of AUD63.76, and maintained churn at 13.2 percent.

The operator, which also provides fixed line services in Australia and has an international managed services business, reported slow growth in group revenue, alongside a strong growth in profit.

“Last year we recorded one of our best years for customer growth. This momentum has continued into the first half of fiscal 2012,” said Telstra CEO David Thodey.

Total revenue for the six months to 31 December was AUD12.42 billion, up 1.1 percent, while net profit increased by 23 percent to reach AUD1.47 billion.

The company provided guidance of low single digit revenue and EBITDA growth for fiscal 2012, with capital expenditure equivalent to about 14 percent of sales.