You've got your iPhone 4 and you are marvelling at its stainless steel case, which doubles up as the iPhone 4's antenna. But there's a problem of it losing signal when you hold it via the lower left-hand corner. What should you do? Take it back? Not according to Apple's advice.The BBC has reported that Steve Jobs has told one owner to 'just avoid holding it in that way.' Not exactly the best response to it. But the official Apple advice is no better either. 'Avoid gripping it in the lower left corner in a way that covers both sides of the black strip in the metal band' is the company line. Or buy a shield for the antenna.You see, that's the problem. The case is also the antenna, particularly sensitive around the botton left-hand side. Which apparently is a particular problem for left-handed owners who naturally touch the phone in that area. So if you keep gripping it there, the signal goes down and down.Described by Jobs as 'really cool engineering' at launch, the problem has now become the talk of the social networks - and not for any positive reasons. There are even videos on YouTube highlighting the glitch.Despite all that, it's unlikely that Apple will be doing either a product recall or making any changes to the design. So it's up to you if you can live with it. Buying a rubber 'bumper' off Apple should help, but it will mean paying more for a problem that really shouldn't be there.