Engineer warned Apple of antenna problem

Add this as the 11th question Apple needs to answer tomorrow.

Bloomberg reporting:

Apple Inc.’s senior antenna expert voiced concern to Chief Executive Officer Steve Jobs in the early design phase of the iPhone 4 that the antenna design could lead to dropped calls, a person familiar with the matter said.

Last year, Ruben Caballero, a senior engineer and antenna expert, informed Apple’s management the device’s design may hurt reception.

Is this report true? What happened?