wrestling with much-publicized antenna problems on the new iPhone that the company is expected to fix by September. Last week Apple supremo Steve Jobs offered free bumpers and refunds to unhappy customers, but was vague on the subject of an internal antenna fix, which he depicted as an industry-wide problem. According to Rodman Renshaw analyst Ashok Kumar, however, Apple has instituted an internal fix to help insulate iPhone 4 antennas from signal interference. Apple, which posted strong third-quarter results earlier this week, has nonetheless sold more than 3 million of the new iPhone, which it is touting as its most successful launch ever. -- Reported by James Rogers in New York Follow James Rogers on Twitter.