Optus will spend up to $1.77 billion on its mobile business this year as it fights to reclaim lost market share.
Optus produced a flat profit result for the year, lifting net profit by 0.7 per cent to $841 million.
The company's chief executive Allen Lew named improving its 4G mobile phone coverage and high speed National Broadband Network customer bases as key parts of the company's growth plans.
"I think our capital investment here in Australia of $S1.9 billion ($A1.77 billion) - compared to $S1.3 billion in the past year - reflects the importance of the business, bearing in mind mobile is a big part of it," Mr Lew said.
Optus added 64,000 post-paid mobile customers during the final quarter of its fiscal year, taking its total mobile subscribers to 9.43 million.
However that only takes the telco back to the 9.43 million customers it had a year ago and is well behind the 16.4 million customers Telstra reported in February along with its $2.1 billion record half year profit.
Mr Lew acknowledged there was intense competition in the Australian market, but pointed to Optus still delivering earnings growth in the latest quarter.
"This shows our strategy is working," he said.
"Pleasingly we are able to see customer growth across all of our major platforms."
There were no definite plans for any acquisition activity, he said, despite iiNet recently accepting a $1.4 billion offer from TPG which would create a bigger internet provider than Optus.
Optus's offering was resonating with customers, he said.
He said its broadband internet customers were up by 20,000 to 1.023 million during the quarter, including 10,000 new NBN customers to 26,000.
He attributed that to positive offerings, such as 31 per cent of its "my plan plus" mobile customers taking up its offer to temporarily increase their data allowance.
He also point to unlimited data offers on home services and free trials of streaming service Netflix.
Optus parent company SingTel, which will delist from the Australian share market this month, lifted its full year profit by 3.5 per cent to $S3.8 billion (SA3.5 billion).
SingTel shares were down six cents to $4.04 at 1600 AET.
OPTUS PROFIT INCHES UP
* Full year net profit of $841m, up 0.7pct from $835m in 2013-14
* Operating revenue of $8.8b, up 3.8pct from $8.5b
* SingTel's final dividend of 10.7 Singapore cents per share, up from 10 cents.
Share
