In a teleconference scheduled for this evening, Apple CEO Steve Jobs will lay the blame for the new iPhone 4 signal loss problems on Toyota: specifically, Toyota’s digital braking and acceleration systems, which cause electronic interference with the iPhone 4’s sensitive antenna, thus causing some dropped calls.

According to Jobs, Apple has “proof positive” after extensive testing. He notes that no other automobile causes this situation, but that Toyota vehicles can—even from several hundred feet away.