So I got my new iPhone 4 yesterday, from Apple store (UK). I noticed that there is a black metal bezel around the edges of the front and back glass, not something I'd noticed before on friends' iPhones but it's fairly discrete. I was wondering if all iPhones have this or if this is a possible redesign? This is different from the silver metal band that goes round the edge of the whole phone. FWIW my serial number starts with 85031. Any thoughts? Is this black metal bezel on all iPhone 4s?