Norwegian software maker Opera has signed a deal to take over the browser building unit of Microsofts Nokia mobile phone unit, Opera said on Thursday. We have signed a strategic licensing deal with Microsoft. We are basically taking over the browser building department in Nokia, Opera Chief Executive Lars Boilsesen said. This means that Opera Mini will become the default browser for Microsofts feature phone product lines and the Asha phones product lines. The deal will be profitable from the start, he added.