Taiwanese handset vendor HTC has previewed two Windows Phone 7 smartphones to consumers across Europe, ahead of the products’ commercial release in October. The Titan and Radar handsets are the first from HTC to run the latest version of WP7, dubbed Mango.

Nokia Siemens Networks’ search for a willing buyer for a stake in the ailing JV appears to have staggered to a halt, with reports emerging that Nokia and Siemens have agreed to rather invest more of their own cash in an effort to revive the partnership’s fortunes. Reports in the Wall Street Journal suggest that plans to sell a controlling stake in the venture to a consortium including private equity investors were about to fall through, with Reuters quoting telecoms analyst Earl Lum as saying that “Any potential investor would need to see some light at the end of the tunnel with regard to profitability for NSN.”

Nokia has announced the settlement of a long-running patent spat with Apple. Under the terms of the agreement, Apple will pay an undisclosed lump sum as well as ongoing royalty payments for its use of patents Nokia claims belong to it. Both parties have agreed to withdraw their respective complaints to the US International Trade Commission (ITC).

The latest version of Microsoft’s mobile operating system, Windows Phone, ripened this week. Mango, as it is known, adds more than 500 new features, including threads which switch between text, Facebook and Windows Live Messenger within the same conversation; the ability to group contacts into personalized Live Tiles; as well as deeper social network integration.