Why does it have to be an iPhone killer? I hate that term. Feels like companies are always trying to beat Apple and 'kill them'. Well since the iPhone seems to be the bar everyone tries to beat, may as well just have an iPhone.
One day the competition might just get on with trying to do their best instead of trying to compare them selves to Apple all the time, but no, they must make iPhone killers, iPad killers or Macbook killers.