Apple has instituted an internal fix to help insulate iPhone 4 antennas from signal interference. But with no mention of a fix or recall, Apple faces a prickly problem: How do you address all the defective phones in the market as improved phones start rolling off the assembly line? Presumably, customers who don't want bumpers may at some point feel entitled to a new phone that comes without the antenna glitch. Wasting no time, Consumer Reports, which called out Apple on the antenna problem earlier, came out swinging Friday, calling the bumper offer "nice," but incomplete. "Consumers deserve answers and fairness," Consumer Reports said in a statement. "Providing free bumpers and cases is a good first step toward Apple identifying and finding a solution for the signal-loss problem of the iPhone 4." Apple has denied "Antennagate" accusations that were reported by Bloomberg Thursday. According to Bloomberg, Apple knew about the antenna design defects well before it went ahead with the product. Apple certainly doesn't want it to look like it knowingly sold 3 million defective phones before it decided to fix a problem. "They achieved their primary goal and protected their reputation," said Kumar. "And from an investor's perspective, the cost of the bumpers is inconsequential."