The touchscreen Z3, which is slated for release in six other fast-growing markets after Indonesia, is the first new BlackBerry phone since chief executive John Chen took the helm of the crisis-hit company in November.
The handset is also the first to be produced from the Canadian firm's partnership with Taiwanese tech giant Foxconn, which also makes gadgets for Apple, and is a key test of whether the new strategy will work.
The phone will be available in shops from Thursday and will cost 190 USD. It will be released later in countries including Malaysia, the Philippines, Vietnam and India, Chen told reporters at a launch event in Jakarta.
But even in Indonesia, the company's biggest market in Asia according to IDC telecoms consultancy; sales have dropped dramatically in the past year and analysts are sceptical the new phone will do much to help.
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IDC said BlackBerry's market share had collapsed from about 40 per cent in 2011 to around five per cent in the fourth quarter of 2013, due to fierce competition from Samsung.
It is the same story in other markets worldwide as BlackBerry fights a losing battle to keep up with fierce competition from Apple's iPhone and devices using the Google Android operating system.
The once-dominant smart phone maker has suffered heavy losses and slashed thousands of jobs in recent years.
The company even put itself up for sale last year but abandoned hopes of finding a buyer several months later and ousted chief executive Thorsten Heins.
As part of its turnaround strategy, the smart phone maker announced the tie-up with Foxconn in December.
At the Jakarta launch, Chen said the company aimed to "re-pivot to make very sure that our customers are taken care of".
He also revealed that the phone had been code named "Jakarta" during production, adding, "Jakarta is a very, very strong market for the BlackBerry".
The Z3 has a five inch (13 centimetre) touchscreen, without the physical keyboard of the older devices.