Apple CEO Steve Jobs is responding to growing complaints about the latest iPhone by declaring, "We're not perfect."

Apple Inc. has been beset with complaints from buyers of its iPhone 4 that holding the phone with a bare hand can muffle the wireless signal. The problem has been termed the "death grip."

Jobs said Apple would give away a free rubber case to every user, helping to reduce the reception problem. On top of that, Apple will give a full refund for anyone within 30 days of purchase, if they aren't happy with the phone.

At a news conference, he declared, "This is life in the smart phone world. Phones aren't perfect, and it's a challenge for the whole industry."

He continued, "We're all doing the best we can, but every phone has weak spots."

On Monday, Consumer Reports said careful testing had confirmed the antenna problem. The magazine refused to recommend the phone and called on Apple to compensate buyers.

Apple has now sold more than three million iPhone 4 units in 22 days, making it Apple's best-selling phone ever.