Net profit totalled USD 709.4 million) in the three months to March, compared with 898 million Singapore dollars in the same period last year, Southeast Asia's biggest telecom firm by revenue said in a statement.
Revenue rose 5.1 percent to 4.34 billion Singapore dollars from 4.13 billion Singapore dollars.
For the full year to March, net profit jumped 3.5 percent to 3.78 billion Singapore dollars while group revenue gained 2.2 per cent to 17.22 billion Singapore dollars.
"To capitalise on the potential of mobile data services in the emerging markets, the regional mobile associates continued to invest in spectrum and build next generation data networks."
Shares in the firm were up 0.46 percent at 4.38 Singapore dollars on Singapore's stock exchange Thursday.
The firm said revenue from its consumer business in at home in Singapore as well as from its fully owned Australian subsidiary Optus "rose strongly, driven by higher mobile data uptake and equipment sales".
In April, Singtel said it was buying almost all of US cybersecurity firm Trustwave for USD 810 million.
Singtel chief executive Chua Sock Koong said in the statement that the acquisition signalled the firm's aspiration "to be a significant global player in cyber security".
"In the digital space, we are sharpening our focus in three key areas -- digital marketing, regional premium video and advanced analytics," she said.
Singtel last year allocated 2.0 billion Singapore dollars for digital investments until the 2016 financial year.
And in April, it launched its own mobile chat app Wavee. In June last year, its fully owned digital advertising firm Amobee bought two mobile advertising firms for a total 385 million Singapore dollars.
Singtel bought US-based Amobee for 321 million Singapore dollars in 2012.
