I came from the g3. I am impressed with the iphone 6 screen. I thought it would be a let down, but the colors are great and the brightness is much better than the g3. Battery life is much better than I was expecting and reading. Haven't been on ios for 4 years so there is some learning curve there, but I'm impressed with flow of the os. My biggest issue is the way the apps line up on the pages. I've had people tell me I sound much better on the iphone vs my g3.