I received my iSkin Solo for my iPhone 4. I was really looking forward to this case and bought one even though I had found another case (Belikn Grip Vue) that I really liked. I am very disappointed. I thought it would be like the Solo 3G that I absolutely loved. -The power button becomes way too sensitive! The internal cut out in the case is too shallow and is always in contact with the iP4's button. the slightest pressure turns the phone on. I am very sure the case is on correctly. This is very bad for battery life when in the pocket. I had this same problem when I first got my Belikn Grip Vue. I shaved a hair of material from the inside of that case (in the button area) and it is perfect. On the Grip Vue there was plenty of material to to play with. On the Solo there is very minimal material so shaving would not work (I did not try). -The iP4 Solo is much tackier (sticky) than the 3G Solo. -The die cuts for the speaker/mic area are not clean. There is excess material around the edges. The biggest issue for me is the power button problem. This is a deal breaker and I have gone back to my Grip Vue.