iPhone 4 engineering will not be matched

I think the iPhone 4 will be one of those classic engineering efforts that won't be matched in future products. Apple had the luxury of producing something really special and tried to outclass android handsets. In the end it is class that will win this for them but rather ease of use and ecosystem which means that future handsets will likely have to be slightly lower build quality because they'll have to compete on cost and lower profit margins.

I'm not saying that future iPhones will be low quality pieces of garbage -- they'll only grow more reliable, but the build quality of the iPhone 4 won't be matched again, unless they split the iPhone into basic and pro level products in future.