Truphone has launched Truphone 3.0, an upgrade to its mobile VoIP application for the Apple iPhone.

The company promises improved ease of use, speed of function response, intuitiveness and simplicity. In addition, voice quality is said to have been made better.

"Customers tell us they want three things: simplicity, quality and a good deal. Those principles drive our innovation, and Truphone 3.0 delivers on all three. We've dramatically improved our UI and account management tools", said Geraldine Wilson, CEO of Truphone.

"We've eliminated the need for compression by utilizing new advances in signal processing, making calls crystal clear. And, just as we always do, Truphone 3.0 sets a new benchmark in terms of quality and performance that competitors will have a tough time matching".

Similar tweaks to Truphone for the Apple iPod touch will apparently be announced soon.