RE: Midrange Samsung phones are not built for longevity

I was using the samsung phone from last three years and suddenly motherboard of phone get stop, the screen of phone shuts automatically and when I gave phone for repair as it comes, the green line on screen come up the other problems were like phone get hang, heat-up, poor camera quality. A last month I buy a new iphone and I am not happy to have it. Android are useless my opinion...