NEW YORK (AP) - Apple plans to hold a news conference Friday to discuss the latest iPhone model, beset by complaints about its antenna. On Monday, Consumer Reports said careful testing has confirmed user reports that holding the phone over a particular spot drastically reduces the signal strength it receives. Covering the spot with duct tape or a case alleviates the problem. Apple hasn't commented on Consumer Reports' finding yet. Company watchers are speculating that the company may give iPhone buyers its "Bumper" case, which normally costs $29. The phone went on sale three weeks ago and outsold previous iPhone launches in its first three days, with 1.7 million units sold. Complaints about the signal strength soon followed.