Reuters reports: “The fourth-biggest cell phone maker did not rule out the development of a device combining its phone technology with Sony’s portable video game technology, but said it was not ready to announce any products.”

“We’re continually evaluating other propositions but they have to be credible propositions. We’re not interested in sticking parts on phones that destroy the brand equity that’s been built up by Sony,” Sony Ericsson spokeswoman Merran Wrigley said by phone on Monday.

“There has been no word from Sony’s gaming division about a new PSP, much less one with a phone built in, a U.S. spokesman for Sony Computer Entertainment told Reuters. Sony has made improvements to the PSP, which made its debut in December 2004, using software, or “firmware,” upgrades.”

“Sony Ericsson plans to unveil products featuring music and imaging capabilities rather than gaming features at an event scheduled to take place in Berlin on June 14, Wrigley said.”