iPhone 4’s antenna and reception problems have given pause to two out of three current iPhone owners. 66% of current owners will delay their purchase of the iPhone 4 because of the issues. Apple CEO Steve Jobs held a news conference on Friday to defend the antenna design. Apple will audio-cast its quarterly results Tuesday starting at 5 p.m. ET, 2 pm. PT. Wall Street analyst Brian Marshall of Gleacher & Company has forecast iPhone sales of 8.75 million for the quarter that ended June 30.”]