Could an iPhone 4 fix or recall soon be coming? Apple is holding a press conference on Friday at 10 a.m., Pacific time. It hasn’t announced the exact nature of the press conference yet. Meanwhile, Bloomberg reports that Apple’s senior antenna expert warned CEO Steve Jobs early in the design phase of the iPhone 4 that the external antenna could lead to dropped calls. Bloomberg adds that a “carrier partner” also voiced concerns about the antenna design. Despite the antenna problem, and the brouhaha around it, the iPhone 4 has broken all previous Apple records, selling 1.7 million devices in the first three days.