HTC claims that its Touch Diamond phone, due this summer, is the first in the world to feature a 3D graphical interface.
The new handset, which will be available to all five UK operators from June, has a 2.8in touch screen, HSDPA access, built-in GPS, 4GB of internal storage and a 3-megapixel camera.
"For the past seven months I have been working very hard with our team to ship this device," said HTC president Peter Chou.
"2007 was all about touch, but 2008-9 will be about mobile internet. For many, the dream of mobile internet has been false. Some phones take 20 moves to get online."