Gresso presents design modification of Apple iPhone 3GS and Apple iPhone 4. It's the first time that 200-year-old African Blackwood is used in conjunction with 18-karat gold in classical iPhone design.Case of the model is produced from African Blackwood which has become a flagship of Gresso mobile phones. It is a rare, exclusive material of incredible strength and durability
Apple claims that the iPhone 4 reception problem doesn't exist. They say that the "dramatic drop in signal bars is explained by an erroneous signal display. However they don't address the data and voice degradation caused by their design.